Annual Review
2019

Molecular Photoscience
Research Center

Kobe University

12Preface
This annual review provides a summary of the research activity of Molecular Photoscience
Research Center for the 2019 academic year. We are further promoting advanced research andinternational collaboration on molecular photoscience and related topics. Any constructive
comments and questions, and any suggestion for collaboration research are welcome.
Since 2017 we have been running joint usage/research project on molecular science in theterahertz frequency region, which is open to domestic universities and research institutes. In thisyear 36 joint research projects were accepted, and the research area spans from solid statephysics, biophysics, solution chemistry, polymer science, photochemistry, theoretical physics
and chemistry, so on. In this year we also started a series of seminars for the four research areas(solar energy conversion, high-resolution spectroscopy in gas phase, spin material physics, andhydration of soft matter) in the terahertz molecular science. The research center will continue tomake efforts to push forward international and domestic collaborative research.
March, 2020
Keisuke Tominaga
Director of Molecular Photoscience Research Center,
Kobe University

3

Contents
Members

5

Research Activities
Laser Molecular Photoscience Laboratory

7

Terahertz Molecular Chemistry Laboratory

17

Terahertz Material Physics Laboratory

29

Original Papers

38

Invited Talks

41

Presentation at Conferences (International and domestic)

45

Presentation by Graduate Students and Postdocs

47

Books

54

Other Publications

55

Lectures to Public

56

Awards57

Conference Organization

58

Seminars

59

4

Members
Keisuke Tominaga

Director

Hitoshi Ohta

Vice-Director

Takako Miyazaki

Assistant (~July 2019, February 2020 ~)Kei Kita

Research Support Assistant (April 2019 ~)Laser Molecular Photoscience Laboratory
Yasuhiro Kobori

Professor

Shunji Kasahara

Associate Professor

Takashi Tachikawa

Associate Professor

Masaaki Fuki

Postdoctoral Fellow (October 2019 ~ February 2020), Research Assistant(March 2020 ~)Hiroki Nagashima

JSPS Postdoctoral Fellow (~ September 2019)

Morihiko Hamada

Postdoctoral Fellow

Terahertz Molecular Chemistry Laboratory
Keisuke Tominaga

Professor

Kaoru Ohta

Research Associate Professor

Feng Zhang

Postdoctoral Fellow (~ January 2020), Visiting Researcher (February 2020),
Research Assistant (March 2020 ~)Masaki Okuda

Researcher

Dustin Loren Almanza

Kobe University Visiting Research Fellow (~ March 2020)

Harumi Sato

Professor (Supplementary assignment. Main assignment is Graduate Schoolof Human Development and Environment)

Yukihiro Ozaki

Visiting Professor

Terahertz Material Physics Laboratory
Hitoshi Ohta

Professor

Susumu Okubo

Associate Professor

Hideyuki Takahashi

Assistant Professor (April 2019 ~)Mitsuru Akaki

Research Assistant (March 2020 ~)Vladislav Kataev

Visiting Researcher (September ~ October 2019)

Dmytro Kamenskyi

Kobe University Visiting Research Fellow (September 2019 ~)Keigo Hijii

Researcher

Toshiro Kohmoto

Professor (Supplementary assignment. Main assignment is Graduate Schoolof Science)5

Eiji Ohmichi

Associate Professor (Supplementary assignment. Main assignment is
Graduate School of Science)

6

Research Activity

I. Laser Molecular Photoscience Laboratory
I-A.

SPIN INTERACTIONS STUDIED BY TIME RESOLVED MAGNETIC RESONANCE
SPECTROSCOPY

In the natural photosynthesis, the organic solar cells and the photocatalysis, transient radical species or
carriers are immediately generated by the light-induced chemical reactions for the photo-energy conversion,
providing essential sources of the living energies. However, it has been unclear how those transient
molecules are initially interacting each other before the carrier-conductions or charge-dissociation takeplace. In our group, we are developing experimental methodologies to determine molecular positions,orbital orientations and orbital overlap (electronic coupling) in the initially generated radical-pairs,
multiexcitons, and electron-hole pairs in the photoactive proteins, in the solar cells, and in thephotocatalysis on the basis of the transient electron paramagnetic resonance (EPR) method. We haveclarified several fundamental mechanisms of the energy-conversions in the singlet-fission materials and in
the low band gap polymer systems.

Transient Electron Spin Polarization Imaging

polarizations (ESP) of the photoinduced CS statesof

Charge-Separation

as different geometries, exchange couplings andGeometries at Bulk-Heterojunction Interfaces

spin-relaxation times of spin-correlated radical

in Organic Solar Cells

pairs in OSC blend films composed of regioregular

Y. Kobori, T. Ako, S. Oyama, T. Tachikawa, K.

poly(3-hexylthiophene-2,5-diyl) and [6,6]-phenyl

Marumoto1

C61-butyric1

Tsukuba University

polarized-light(J. Phys. Chem. C 2019)selection) with respect to an external magnetic

Despite importance of elucidating photoinduced

field direction at a cryogenic temperature. Fromcharge-generation mechanisms for development of

this, we performed an analysis of mapping thethe efficient organic solar cells (OSC), it has been

ESPs to space directions to obtain image views ofquite difficult to characterize molecular geometries,

the molecular geometries in mobile and trapped CS

electronic couplings and charge-mobilities instates. We propose that the heterogeneities in theinitial photoinduced charge-separated (CS) statesinterfacial charge-generations may be correlated

for the heterogeneous molecular environments inwith high- and low-frequency phonon modes

bulk-heterojunction interfaces between electron

leading to the mobile and weakly trapped

donor-acceptor domains in the photoactive layers.

charge-pairs,

In this study, we employed time-resolved electron

significance of such molecular motions for theparamagnetic resonance (TREPR) method toefficient photocarriers overcoming the interfacialcharacterize

electrostatic binding potential.

Heterogeneous

two

kinds

of

electron

spin

7

acid

methylester

excitations

respectively,by

applying(magnetophoto-denoting

greatExergonic Intramolecular Singlet Fission of an

triplet species is generated in this system via

Adamantane-Linked Tetracene Dyad via Twincorrelated triplet pair having singlet and quintet

Quintet Multiexcitons

characteristics.

Y. Matsui,1 S. Kawaoka,1 H. Nagashima, T.

revealed formation of syn- and anti-conformers in

Nakagawa,2 N. Okamura,1 T. Ogaki,1 E. Ohta,1

the quintet, i.e.

S. Akimoto,3 S. Yagi,2 Y. Kobori, H. Ikeda1

generation requires small conformational motion to

1

Osaka Prefecture University

induce2

UNISOKU Co., Ltd.

presence of aliphatic linkages, like the rigid

3

Graduate School of Science, Kobe University

adamantane(J. Phys. Chem. C 2019)conservation of intrinsic high S1 and T1 levels of

An adamantane-linked tetracene dyad (Tc–Ad–Tc)

the original monomers, moderate bridge-mediatedundergoes exergonic intramolecular singlet fission

σ–π(SF), producing long-lived (τ = 175 μs) andintramolecular SF involving

high-energy (2 × 1.03 eV) multiexciton. Time-

1 3

resolved absorption, fluorescence decay, andtriplet–triplet

electronlong-lived and high-energy multiexciton.

paramagnetic

resonance(EPR)

Time-resolved

EPR

analysis

5 3( Tc–Ad–3Tc)*. The quintet

singlet-quintet
group,

interaction

spin
may

relaxation.
enableleading

effective

to
1

The

exergonic

Tc*–Ad–Tc→

3( Tc–Ad– Tc)*, and prevention of undesirable
annihilation,

finally

resultin

spectroscopic analysis revealed that the long-lived

Neighboring

A systematic control of electronic interactions

Tetracene Units by Mixed Self-Assembled

between two neighboring units using conventional

Monolayers

forcovalent linkages and molecular assembly methods

High-Yield and Long-Lived Triplet Excited

to optimize these kinetic processes is quite difficult

States through Singlet Fission

because of the complicated synthesis and random

T. Saegusa,1 H. Sakai,1 H. Nagashima, Y.

orientations. In this study, we propose a novel

Kobori, N. V. Tkachenko,2 T. Hasobe1supramolecular1

Keio University

self-assembled monolayers (SAMs) with two

2

Tampere University

different(J. Am. Chem. Soc. 2019)

Tc-SAMs on gold nanoclusters, which are

Although tetracene (Tc) is well-known as a good

prepared by a Tc-modified hetero-disulfide withcandidate for singlet fission (SF), the number oftwo different chain lengths, attain high-yield SF

high-yield and long-lived triplet excited states(ΦSF: ~90%) and individual triplet yields (ΦΤ:through SF is extremely limited because of the~160%). The obtained ΦSF is the highest value

relative acceleration of the reverse triplet-triplet

among Tc derivatives in homogeneous solution toannihilation

the best of our knowledge.

Controlled

Orientations
on

(TTA)

Gold

of

Nanoclusters

considering

theenergymatching between a singlet and two triplet states.
8

chain

strategylengths.

utilizingtheSpecifically,

mixed
mixed

by

thin films of 6,13-bis(triisopropylsilylethynyl)-transport of singlet and quintet multiexcitons topentacene. We have clearly demonstrated that the

spin-correlated triplet pairs during singlet

ESP detected in resonance field positions of thefissions

individual triplet excitons are dependent on

S. Matsuda, S. Oyama, Y. Kobori

morphology and on detection delay time after laser(Chem. Sci. 2020)

flash to cause SF. The ESPs were clearly explainedSinglet fission (SF) is expected to exceed theby quantum superposition of singlet-triplet-quintet

Shockley–Queisser theoretical limit of efficiency

wavefunctionsofofdissociation as the electron spin polarization

spin-entanglement in the triplet-triplet pair statetransfer from strongly exchange-coupled singlet

via one singlet exciton is a promising phenomenon

and

for

spin-correlated triplet pair states by spin-spin

Electronspinorganic

severalpolarization

solar

energycells.

generated

Transport

conversion

applications

quintetviaTTpicosecond

statestotriplet-exciton

weakly-coupled

including quantum information science. However,

dipolardirect observation of the electron spin polarization

superposition of the spin eigenstates was notby transports of entangled spin-states has not been

directly detected, the present interpretation of thepresented. In this study, time-resolved electron

spin correlation of the separated T+T exciton pairparamagnetic resonance has been utilized to

may pave new avenues not only for elucidating theobserve the transportations of the singlet andvibronic role on the de-coupling between the twoquintetcorrelated

excitons but also for scalable quantum information

triplet-triplet (T+T) exciton-pair states by probing

processings using quick T+T dissociation via

the electron spin polarization (ESP) generated in

one-photon excitation.

Transport of Spin-Correlated Multiexciton via

little is known on the primary multiexciton spin

Singlet Fission

dynamics following the SF.[1-5] Furthermore,

Y. Koboritransports of spin-entangled multiexcitons havecharacters(Wasielewski

generating

Symposium(Wazapalooza2019),

couplings.

Althoughthecoherent

recently been suggested by an ultrafast transient

Invited)absorption

Applications of the singlet fission (SF) arephenomena may be highly significant for several

expected

Shockley–Queisser

applications

includingquantumtheoretical limit of the solar cell efficiency. Quintet

science,[7]noevidences

state generations in triplet–triplet pair have beentransportations of the spin-entanglements havereported and are thought to be essential forbeen examined in correlated triplet-triplet pairpreventing the unwanted loss of the SF-bornstates with the singlet and quintet characters.

toexceedthemultiexciton through the singlet channels, although9spectroscopy.[6]directAlthough

this

information
for

the

In this study, time-resolved electron paramagnetic[1] Weiss, L. R.; Bayliss, S. L.; Kraffert, F.;

resonance (TREPR) method has been applied toThorley, K. J.; Anthony, J. E.; Bittl, R.; Friend, R.

observe the transportations of the correlatedH.; Rao, A.; Greenham, N. C.; Behrends, J. Nat.

triplet-triplet pair states by probing the electron

Phys. 2017, 13, 176–181.

spin polarization (ESP) generated in thin films of[2] Tayebjee,

6,13-bis(triisopropylsilylethynyl)pentacene.

Kumarasamy, E.; Campos, L. M.; Sfeir, M. Y.;

We

M.

J.

Y.;

Sanders, S.

N.;

have clearly obtained that the ESP detected in the

McCamey, D. R. Nat. Phys. 2017, 13, 182-188.

resonance field positions of the individual triplet[3] Sakai, H.; Inaya, R.; Nagashima, H.; Nakamura,excitons are dependent of the film morphology andS.; Kobori, Y.; Tkachenko, N. V.; Hasobe, T.

of the detection delay time after the laser flash.

Phys. Chem. Lett. 2018, 9, 3354-3360.

These observations were clearly explained by[4] Nagashima, H.; Kawaoka, S.; Akimoto, S.;correlations of the singlet-triplet-quintet characters

Tachikawa, T.; Matsui, Y.; Ikeda, H.; Kobori, Y. J.

in the triple-triplet pair states as the electron spin

Phys. Chem. Lett. 2018, 9, 5855–5861.

polarization transfer from strongly exchange-[5] Matsui, Y.; Kawaoka, S.; Nagashima, H.;

coupledKobori, Y.; Ikeda, H. et.al. J. Phys. Chem. C 2019,

singletandquintetcharacters

toJ.

weakly-coupled spin sublevels formed by the123, 18813-18823.

singlet-triplet-quintet correlations in the presence[6] Wan, Y.; Wiederrecht, G. P.; Schaller, R. D.;of the external magnetic field. Accordingly, weJohnson, J. C.; Huang, L. J. Phys. Chem. Lett.

have modeled the sublevel populations and EPR

2018, 9, 6731-6738.

transitions in the excited multiexciton considering[7] Olshansky, J. H.; Krzyaniak, M. D.; Young, R.

the modulation of the spin-spin exchange coupling

M.; Wasielewski, M. R. J. Am. Chem. Soc. 2019,

and the subsequent decoherence processes [8] to141, 2152-2160.

understand the dynamics of the multiexcitions.

[8] Kobori, Y.; Fuki, M.; Murai, H. J. Phys. Chem.

References

B 2010, 114, 14621-14630.

Electrostatic Interaction with Anionic Polymer

alkaloid. Neutral water-soluble polymers andActivates Berberine Photosensitizer

alginate, a naturally occurring anionic polymer,

K. Hirakawa1, M. Yamada1, S. Okazaki2, M.

showed no or little effect on the photochemical

Hamada, Y. Kobori

property of berberine. Polystyrene sulfonate

1

Shizuoka University

significantly increased the lifetime of photoexcited2

Hamamatsu University School of Medicine

berberine, leading to the improved quantum yield(Photomedicine and Photobiology, 2019)ofsingletoxygengeneration.

Electrostatic interaction with polystyrene sulfonate,sulfonate’s

activity

controla water-soluble anionic polymer, suppressed thephotosensitizer

selfquenching

photomedicine.

of photoexcited

berberine,

an

10

may

have

of

Polystyrene
berberine

application

for

I-B.

SINGLE-MOLECULE STUDIES ON PHOTO-ENERGY CONVERSION PROCESSES

To design a more efficient solar energy conversion system (light energy to electrical or chemical energy), it
is important to reveal and understand the mechanisms of various chemical reactions at heterogeneousinterfaces. We have investigated the photochemical and photophysical processes occurring on a variety oflight energy conversion systems such as photocatalysis and solar cells using advanced single-molecule,single-particle spectroscopy techniques and gain new insights related to spatial and temporal
heterogeneities in reactions and structures, which are always masked by ensemble averaging.

Interfacial

OxygenLong-Lived

Vacancies

Yielding

adjustment of the interface largely improves theinHematitesolar water splitting performance of hematite.

Holes

The samples were synthesized via an additive

Mesocrystal-Based Photoanodes
ZhujunZhang,

Izuru

Karimata,

Hirokifree

solvothermal

self-assembling

method.

Nagashima, Shunsuke Muto,1 Koji Ohara,2Ti-modified Fe2O3 MC with diameters of ~300 nm

Kunihisa Sugimoto,2 and Takashi Tachikawa

is composed of closely stacked nanocrystal subunits

1

Nagoya University(~30 nm). The photoanodes prepared using

2

Japan Synchrotron Radiation Research Institutespin-coating method were annealed at 700 °C for 20(Nat. Commun., 2019)min. The carrier density (Nd) (calculated based on

Hematite (α-Fe2O3) is an ideal semiconductor forthe slop of the Mott- Schottky plots) for Ti-Fe2O3

solar water splitting but shows low efficiency due

MC (5.1 × 1020 cm−3) is 3.2 and 21 times higher

tothan those of Fe2O3 MC photoanode (1.6 × 1020

thesignificant

chargerecombination.
ofcm−3) and Fe2O3 single crystal (SC) photoanodecrystal(2.4 × 1019 cm−3), respectively. The increased Nd areorientation. The highly ordered structures render

possibly due to the formation of VO at the interfaces

them with superior efficiencies in charge separation

inside MCs, as revealed by EPR, XPS, andand transport between primary nanocrystal subunits

STEM-EELS.

Mesocrystals
combined

(MCs)

are

nanoparticles

superstructures
with

same

compared with conventional nanocrystal systems.

The photocurrent density obtained for the Ti-

Besides, interfacial oxygen vacancies (VO) might be

Fe2O3 MC photoanode at 1.23 V vs. RHE was 2.5

created at the intimate interface between the highlymA cm−2, which is twice and seven times the Fe2O3

oriented nanocrystals under thermal treatment due

MC (1.1 mA cm−2) and Fe2O3 SC (0.35 mA cm−2)

to local atomic reconstruction, possibly resulting inphotoanodes, respectively. This is the highest value

improvement

reported thus far for hematite photoanodes withoutofintergranularelectronic

conductivity and thus improve the charge transfer

additional

efficiencies in the bulk. In this paper, we

illumination. The photocurrent can be further

demonstrate that the hieratical assembly of MCs

increased to 3.5 mA cm−2 after deposition of Co-Pi

withcocatalyst on the surface. To elucidate the charge

minimum

disordersandappropriate

surfacetreatment

under

back

carrier dynamics, time-resolved microspectroscopy
11measurements were further performed. It wasrecombination with the photogenerated electrons,
especially in Ti-Fe2O3 MCs, and thus contribute to
the PEC performance.
The present results provide new perspectives

5

Current density (mAcm-2)

suggested that longer-lived holes escape from the

in

terms

management

through

theofinterfacialVO

construction

of

3
2
1
0
0.6

to various fields including photocatalysis andoptoelectronics

4

Ti-Fe2O3 MC/Co-Pi
Ti-Fe2O3 MC
Fe2O3 MC
3.5
Fe2O3 NC
dark

0.35
0.8

1.0

1.2

1.4

1.6

Potential (V vs. RHE)

Figure 1. Performance of hematite photoanodes.

mesocrystal superstructures.

Charge Carrier Dynamics in Sr-Doped NaTaO3

charge carrier dynamics. For instance, when the

Photocatalysts Revealed by Deep Ultraviolet

doping amount of Sr increases, the peak energy

Single-Particle Microspectroscopy

tends to increase from 2.75 to 2.85 eV and then

Seigo Mizutani, Izuru Karimata, Longjie An,1

decrease in the range of 3−9 mol %. The blue shift

Takamasa Sato,1 Yasuhiro Kobori, Hiroshi

of approximately 0.1 eV in the lower concentration

Onishi,1 and Takashi Tachikawa

region is comparable to the increase of the band gap

1

Graduate School of Science, Kobe University

energy (∼0.1 eV) by Sr-doping. Meanwhile, the(J. Phys. Chem. C, 2019)higher doping amount (>3 mol %) results in the red

Among various metal oxides, sodium tantalate

shift of the PL peak, possibly because of(NaTaO3) is one of the best semiconductors fordelocalizationachieving efficient photocatalytic water splitting.

involvement of deeper trap states caused by crystal

However, the primary mechanism responsible for

deformations

increasing the reaction rate up to an order ofFurthermore, we investigated the photocatalytic

magnitude by specific metal doping and surface

reduction reaction for a single Sr-doped NaTaO3

modification with co-catalysts has not been

particle to gain critical information related toelucidated yet. In order to clarify the underlying

dopant-driven electron migration. It was found thatmechanism, we explored the structure-dependent

electrons that escaped from the photoexcited

photoluminescence (PL) of pristine and Sr-doped

surface where the holes are located arrived at the

NaTaO3 crystals at the single-particle level using a

opposite surface to reduce the adsorbed substrates.

time-resolved

fluorescence

Our single-particle approaches provided strong

microscope. Combined with transmission electron

evidence for the dopant-driven enhancement of

microscope techniques, the PL characteristics ofcharge separation.

deep

ultraviolet

individual particles were directly linked to thedopant concentrations in each particle, allowing us
to unravel the complex effects of Sr-doping on the
12

of
and

the

excitedsurfacestatesand/orreconstructions.

Figure 1. Single-particle PL spectra.

Bilayercharacteristic dependence of MFEs on the viscosity

Membranes Explored by Magnetic Field Effectand polarity of the surrounding medium has been

Based Fluorescence Microscopy

applied to investigate the local environments

Manabu Sakurai, Yasuhiro Kobori, and Takashi

around the probe molecule. In this study, a novel

TachikawaMFE-based fluorescence microscopy technique was(J. Phys. Chem. B, 2019)

developed to explore the structural dynamics ofLipid bilayer membranes are known to exist as

lipid bilayer membranes. The vesicle formation

heterogeneous and dynamic structures where theduring the membrane deformation was selectively

molecules are always moving and fluctuating undervisualized through the MFEs, thus allowing thephysiologicalstructural

extraction of information on the cellular dynamics

features and dynamics of membranes were onlyat high temporal and spatial resolutions. In

inferred from visual information obtained mostparticular, the MFE imaging could visualize thecommonly from optical images. Magnetic field

specific membrane states with adequate polarity

effects (MFEs) studied herein are phenomena inand viscosity during the changing of the lipid

which the exciplex emission from an electron

bilayer state. This highly versatile and powerful

donor−acceptor dyad increases or decreases bytechnique is applicable to a wide range of areas,

applyingansuch as biology and material science.

TiO2

Superstructures

Structural

Dynamicsofconditions.

external

Lipid

However,magnetic

field.

The

OrientedHighly ordered superstructures of semiconductor

Nanospaces: A Strategy for Efficient andnanocrystals contain abundant nanometer-scale

Selective Photocatalysis

pores between the crystals; however, there have

Yuta Murakami, Takashi Kamegawa,1 Yasuhiro

been difficulties in controlling the size andKobori, and Takashi Tachikawa

orientation of these nanospaces without the use of a1

Osaka Prefecture University

template or a capping reagent. This constraint has(Nanoscale, 2020)

affected their development and applications inwithpotential
13

fieldsincludingcatalysis

andoptoelectronics adversely. In this study, we

performed to reveal anisotropic adsorption andsynthesized a rod-shaped TiO2 mesocrystal (TMC)

excitation

having a length of a few hundreds of micrometers

photodegradation of the dyes was found to be moreand comprising regularly ordered anatase TiO2

facilitated in nanospaces formed by the specificnanocrystals that form oriented nanospaces by

facets, as compared with the dyes randomly

exposedFinite-difference

adsorbed on the outer surfaces. Consequently,

time-domain (FDTD) calculations of electric fields

enhancing the selectivity of photocatalytic reactions

and in situ fluorescence imaging with a polarization

on molecular size and redox was achieved bysensitive dye on a single mesocrystal wereintroducing the concept of oriented nanospace.

{001}

I-C.

facets.

of

the

dyes.

Furthermore,the

HIGH-RESOLUTION SPECTOSCOPY OF POLIATOMIC MOLECULES

Doppler-free high-resolution spectroscopy is a powerful tool for studying the structure and dynamics of
excited polyatomic molecules in detail and unambiguously. Single-mode auto-scan laser systems for the
UV-Visible-NIR region, the absolute wavenumber measurement system, and Doppler-free high-resolution
spectroscopic measurement systems have been constructed to investigate the excited molecules.
High-resolution and high-precision measurement of spectral lines enables to observe rotationally-resolved
electronic transition, then it is expected to find the excited state dynamics such as internal conversion (IC),intersystem crossing (ISC), and intramolecular vibrational redistribution (IVR) through the deviations inspectral line positions, intensity anomalies, and the changes of spectral linewidth. Recently, we observed
the high-resolution spectrum and Zeeman effects of the π-π* transition of several aromatic molecules suchas benzene, naphthalene, anthracene, etc. and these molecular constants were determined in high-accuracy.
The Zeeman spectrum combined with high-resolution spectroscopy is available to identify the coupling
between singlet and triplet states. For these molecules, it is concluded that the magnetic moment comesfrom the orbital angular momentum of electrons and the main non-radiative process in the S1 state is not theintersystem crossing to the triplet state, but the internal conversion to the ground state. We also observed
the high-resolution spectrum of naphthalene-like molecules such as fluorene and carbazole.

High-resolution laser spectroscopy of the S1←S0transition of fluorene and carbazole have beentransition of fluorene and carbazole

observed. Sub-Doppler excitation spectra were

Shunji Kasahara, Shinji Kuroda, and Shoya

measured by crossing a single-mode UV laser

Uedabeam perpendicular to a collimated molecular(74th International Symposium on Molecularbeam. The absolute wavenumber was calibrated

Spectroscopy, 2019)with accuracy 0.0002 cm-1 by measurement of the

Rotationally-resolved high-resolution fluorescence

Doppler-free

excitation

spectra

of

the

S1←S0

electronic
14

saturation

spectrumofiodinemolecule and fringe pattern of the stabilized

constants are good agreement with the obtained

etalon.

ones except the 000+204 cm-1 band of fluorene. We

For fluorene, 7 bands were observed andfound a typical local energy shift in this 000+204

analyzed from the 000 to 000+1228 cm-1 band, andcm-1 band, and it was identified as originating fromtheir molecular constants were determined withthe perturbation between the vibronic levels in thehigh accuracy. For carbazole, 3 bands were

S1 state. The Zeeman effect were also observed up

observed and analyzed from the 000 to 000+1122

to 1.2 T for the 000 bands to consider the excited

cm-1 band, and their molecular constants were also

state dynamics.

determined. [1]References:

Yi et al. were reported the lower vibronic
bands for both molecules, and their molecular

I-D.

[1] J. T. Yi, L. Alvarez-Valtierra, and D. W. Pratt,
J. Chem. Phys. 124, 244302 (2006).

HIGH-RESOLUTION SPECTROSCOPY OF NO2 AND NO3 RADICAL

Doppler-free high-resolution spectroscopy was applied to investigate the electronic states of radicals.
Radicals are very sensitive to magnetic fields because the spin quantum number is a half-integer, it isexpected to observe large Zeeman splitting even with the small magnetic field. The Zeeman splitting isvery useful to assign the observed rotational lines even in the strong perturbing region. Nitrogen dioxide
NO2 and nitrate radical NO3 have been known as an important intermediate in chemical reaction in theatmosphere. These radicals are the prototype molecules to understand vibronic interaction as followings;
the Renner-Teller effect for NO2, and the Jahn-Teller (JT) and pseudo Jahn-Teller (PJT) effects for NO3.
Optically allowed transitions have been observed as strong absorption and LIF excitation spectra by several
research groups. For NO2 radical, hyperfine splittings are observed in high-resolution spectrum, and themagnitude of the hyperfine interaction constants suggest the state mixing between the electronic excitedstate and the ground state through the vibronic interaction. Recently, we reported the hyperfine-resolved
high-resolution spectrum NO2 A-X system for the 14500-16800 cm-1 region.

High-resolution laser spectroscopy of A-X

and the model molecule to investigate thetransition of nitrogen dioxide

intra-molecular

ShunjiKasahara,

Takumi

Yoshizawa,

interactionsofpolyatomic

molecules. The optically allowed A-X transition

Michihiro Hirata, and Kohei Tada

has been observed as absorption and LIF(35th Symposium on Chemical kinetics andexcitation

Dynamics, 2019)

High-resolution laser spectroscopy was applied

The nitrogen dioxide (NO2) is one of thetoimportant stable free radicals in the atmosphere

hyperfine-resolved rotational structure of the15

observe

spectra
the

by
A-X

many
transitiongroups.
andvibronic bands were reported. In this study, we

lower and higher energy region reported by otherhavehyperfine-resolved

groups. On the other hand, a sharp decreasing of

high-resolution fluorescence excitation spectra of

the Fermi contact interaction constant was foundobserved2

the2

the A B2 ←X A1 electronic transition of NO2

in 16200-16600 cm-1 region, and it may beradical in 14500-16800 cm-1 energy region bycaused by the interaction with the othercrossing a single-mode laser beam perpendicularelectronic state. The Zeeman splitting wereto a collimated molecular beam. [1]observedfor these unusual qR0(0) lines to confirm

A molecular beam was obtained by expanding ofthese assignment. The rotational structure were

NO2 with Ar gas mixture through a pulsed nozzle

also observed for several vibronic bands which

into the vacuum chamber and collimated by

has unusual

using a skimmer (ϕ 2 mm) and slit (0.5 mm).

observed high-resolution spectrum of 16218 cm-1

Sub-Doppler fluorescence excitation spectra

band is shown in Fig. 1. Each rotational lines

were measured by crossing a single-mode lasershows fine and hyperfine splitting (not resolved

beam (Coherent CR699-29) perpendicular to ain this Figure).

collimated molecular beam. The typical observed

References:

linewidth was 25 MHz which is the residual[1] K. Tada, M. Hirata, and S. Kasahara, J. Chem.

Doppler width and the absolute wavenumber was

Phys. 147, 164304 (2017).

calibrated

with

14

accuracy

0.0001-1cmqR0(0) line. For example, thebymeasuring the Doppler-free saturation spectrumof iodine and a fringe pattern of the stabilized
etalon.
In the observed region, the qR0(0) lines (k =0, N = 1←0 transition) were observed for more
than

80

vibronic

bands,

andtheirhyperfine interaction constants; the Fermi contact
interaction constants and the dipole-dipole

Figure 1. The observed rotational structure ofinteraction constants were determined. The

16218 cm-1 band with assignment for K = 0.

determined Fermi contact interaction constants in

Each rotational lines shows fine splitting (F1/F2

the 14500-16100 cm-1 region were found tolines).

be intermediate in magnitude between those in16

II. Terahertz Molecular Chemistry Laboratory
II-A.

LIQUID DYNAMICS STUDIED BY NONLINEAR INFRARED SPECTROSCOPY

Molecular dynamics in liquids are strongly affected by the nature of intermolecular interactions. It is greatly
important to obtain the molecular description on relation between the dynamics and interactions in liquids inorder to elucidate the solvent dynamical effect on chemical reactions. Fluctuations of the vibrationaltransition energies, which are characterized by time correlation functions of the frequency fluctuations, arevery sensitive to the dynamics of surrounding environments. Vibrational energy relaxation is also affectedby short-range solvent-oscillator interaction. Furthermore, orientational relaxation reflects microscopic
viscosity around the oscillator. In recent years, a great deal of effort has been devoted to investigate
solute-solvent interactions with infrared (IR) nonlinear spectroscopy. The vibrational frequency fluctuations
can be investigated by three-pulse photon echo and two-dimensional IR spectroscopy. By
polarization-sensitive pump-probe spectroscopy in the IR region we can study vibrational energy relaxationand orientational relaxation.

II-B. DYNAMICS OF ELECTRONICALLY EXCITED STATE IN CONDENSED PHASES
Understanding of dynamics in the electronically excited state is a key issue to elucidate mechanisms invarious photochemical reactions in condensed phases. It is also important for designing and developing newmaterials which have characteristic functions. We employ various kinds of ultrafast technique to monitor
photochemical and photophysical invents in sub-pico- to picoseconds time scales. By femtosecond
fluorescence up-conversion technique, dynamics in the electronically excited state can be observed with atime resolution up to 100 fs. Vibrational dynamics in the electronically excited can be investigate by
UV/VIS-pump IR probe technique. Moreover, low-frequency responses by photoexcitation are investigatedby UV/VIS-pump THz probe experiment. Such responses include change of low-frequency vibrationalmodes induced by photoexcitation and photo-induced changes of charge carrier dynamics.

Chargecarrierdynamics

in(15th DAE-BRNS Trombay Symposium on Radiation

diketopyrrolopyrrole-linked& Photochemistry 2020)

tetrabenzoporphyrin-based bulk heterojunction

In this study, we study the charge carrier dynamics ofthin films probed by time-resolved terahertz

C4-DPP-BP bulk heterojunction thin films blended

spectroscopy

with PC61BM. For the photoexcitation at 800 nm, theKohtarotransient THz signal decays with the time constants

Takahashi1, Mitsuharu Suzuki1, Hiroko Yamada1

of 0.5 ps and 14 ps and with a small residual

and Keisuke Tominaga

component. We consider the annihilation of polaron

1

Division of Materials Science, Graduate School ofpairs to be responsible for the fast-decaying

Science and Technology, NAIST

components at higher excitation fluence. We discuss

Kaoru

Ohta,

YuichiHiramatsu,

17

the difference in the charge carrier dynamics between
the fast and slow time scales and their implications
for the charge extraction mechanism of the solar
cells.

Figure 1. Molecular structure of C4-DPP-BP.

II-C.

MOLECULAR DYNAMICS IN THE TERAHERTZ FREQUENCY REGION IN
CONDENSED PHASES

Vibrational spectroscopy has been widely used to investigate structures, interactions and dynamics ofmolecules and molecular complexes. The low-frequency region below several terahertz (THz; 1 THz = 33.3cm-1) corresponds to intermolecular modes of complexes and intramolecular modes with a weaker potential
force and/or larger reduced mass. Intermolecular interactions such as hydrogen bonding, van der Waals
forces and charge-transfer interactions play important roles in various chemical and biological processes.
Moreover, the low-frequency spectra also reflect molecular dynamics on a time scale from picoseconds tofemtoseconds. There has been dramatic progress in the generation and detection techniques of freely
propagating THz radiation in the past two decades. The examples of the generation technique include
photoconductive switching, optical rectification, and the surface photocurrent of semiconductors. Because
the pulse duration of the THz radiation is in a sub-picosecond time region, it is possible to measure theelectric field of the radiation by coherent detection methods, which consequently allows us to conduct THz
time-domain spectroscopy (TDS). By THz-TDS we can obtain the refractive index and extinction
coefficient of a medium by measuring the phase and amplitude of the radiation. THz-TDS is an attractive
method for studying dynamics in condensed phases with time scales of sub-picoseconds and picoseconds.
We have applied THz-TDS to investigate various kinds of condensed materials, including neat liquids andmixtures of liquids, biological polymers, and charge carrier dynamics in semiconductors and conducting
polymers.

Broadband dielectric spectroscopy from sub

In order to study the dynamics of phospholipid and

GHz to THz of hydrated lipid bilayer of DMPC

its hydration water, we measured complex dielectricYu Kadomura, Naoki Yamamoto1 and Keisuke

spectra of 1,2-dimyristoyl-sn-glycero-3-phospho-

Tominagacholine (DMPC) from sub-GHz to THz frequency

1

Jichi Medical University

region with varying the temperature and hydration(Eur. Phys. J. E, 2020)

level of the sample. Spectra obtained from a vector
network analyzer and two terahertz time-domain
18spectrometers are adjusted, which enables us toobserved for the hydrated samples. We suggest thatanalyze the dielectric spectra from the sub GHz

this fast mode originates from the hydrogen-bondregion to THz region by a model function. We

dynamics of water such as breaking, formation, andanalyzed the spectra of a dehydrated sample with arearrangement of the bond. The main relaxationalmodel function containing two underdamped

mode in the GHz region and its activation energy

vibrational modes and a constant. In the case ofare slower and larger, respectively, than those of

hydrated samples, a Cole-Cole relaxational modebulk water. We confirmed a fast relaxtional mode in

and two Debye relaxational modes were needed in

the sub-THz region, which was suggested by theaddition to the vibrational components. As a result,previous work which only used a THz spectrometera fast mode in sub-picosecond time scale was

High-resolution

THz

Solid-state

DensityCalculations

of

and

crystals as examples. The performance of the PBE

Theoryfunctional augmented by Grimme’s two dispersion

Aromatic

correction terms, D* and D3, respectively, areSpectroscopy
Functional
Polycyclic

rigorously evaluated against the experimental

Hydrocarbons
Feng

Zhang,

Houng-Wei

Wang,1

Keisukecriteria of frequency and isotope shift (IS). The D*

Tominaga, Michitoshi Hayashi,1 Tetsuo Sasaki2and D3 terms use empirical and semi-classical1

National Taiwan University

approach for correcting the London-type dispersion

2

Shizuoka University

interactions, respectively. The nature of each THz(J. Infrared Milli Terahz Waves, Special Issue on themode simulated by PBE-D* and that by PBE-D3 isInterpretation of Terahertz Spectra, in press)

quantitatively compared in terms of the percentage

High resolution and broadband THz spectra of thecontributions

crystals of nine polycyclic aromatic hydrocarbons

intramolecular vibrations to the vibrational energy.

(PAH) are presented. Five PAHs are comprised of

We find that the two methods have equivalentortho-fused benzene rings, and the other four of

performance in reproducing the frequencies, ISs,

peri-fused benzene rings. THz mode assignment isand nature of THz modes of both the anthracene

performed by using the anthracene and pyrene

and pyrene crystal.

Towards a General Rule Guiding THz Mode

Mode assignment is a basic issue of THz

Assignment in Molecular Crystals

vibrational spectroscopy. Since the rapid growth of

Wang,1oftheintermolecular

and

the

KeisukeTHz techniques about two decades ago, theTominaga, Michitoshi Hayashi,1 Tetsuo Sasaki2

interpretation of THz vibrational spectra, based on

1

National Taiwan University

the normal mode calculations, have been attracting

2

Shizuoka University

considerable(IRMMW-THz, 2019)advances of the solid-state density functional

Feng

Zhang,

Hong-Wei

19

attention.

Benefiting

from

the

theory (DFT), THz peaks of many molecular

general rules to guide the THz mode assignment incrystals have been reproduced with accuracy

any molecular system of interest. To this end, we

toleratedthehave systematically examined the nature of thepractical application, a database involving an

THz modes in a variety of molecular systems

explicit explanation of THz vibrational spectra of aincludinggreat number of crystalline molecules, akin to what

pharmaceuticals, amino acids, peptides, and so on.

have been accomplished for the mid-infrared

We in this report presented the results of three

spectroscopy, is in quest. At current stage, theprototype molecular systems, C60, polycyclic

solid-state DFT calculations are however too

aromatics, and short-chain peptides. We paid aexpensive to have this goal attained. For instance,

particular attention to the relationship between thefor calculating a small-size molecule consisting 10

nature of THz modes and the size of molecules.

atoms, a solid-state DFT calculation running at a

We characterized the THz modes as a combination

moderate-accuracy level (GGA functional +of intermolecular and intramolecular vibrations

double-ξ basis set), would consume thousands

and demonstrate that the characteristic has a clear

CPU hours. Note that the cost grows quadraticallycorrelation

to cubically with the increase of molecular size.

configuration of a molecule of concern.

byexperimentation.

Towards

fullerene,

aromatics,

relationshipwithcarbohydrates,

thebackbone

As a result, there is a demand for a few of

THz Fingerprints of Short-Range Correlations

radiation interacts with the collective vibrations ofof Disordered Atoms in Diflunisal

correlated disorder, thus providing a promising

Feng Zhang, Houng-Wei Wang,1 Keisuke

tool to examine the symmetry of short-range

Tominaga, Michitoshi Hayashi,1 Tetsuo Sasaki3

correlations of disordered atoms. Through a

1

National Taiwan University

thorough examination of the selection rule of THz

2

Shizuoka University

vibrations in which the disordered atoms are(J. Phys. Chem. A, 2019)

involved to different extents, we deduced that onlyThis work proposes a THz spectroscopy approachfour

to the investigation of one of the outstanding

disorder exist and all of them display unambiguous

problems

structure

fingerprint peaks in the 50-170 cm-1 frequency

analysis of a crystal with disorder. Form I ofregion. We finally proposed an alternating packing

diflunisal, in which the two ortho-sites on one

model in which the correlation lengths of disorderphenyl ring of diflunisal show occupational

are on the nanometer scale.

incrystallography—theshort-range

correlation

possibilities

disorder, was used for an illustration. THz

Temperature-dependence of THz conductivity in

Alvin Karlo G. Tapia1, and Keisuke Tominaga

Polyaniline Emeraldine Salt-Polyethylene Pellets

1

University of the Philippines Los Baños College

20of

(J. Infrared Milli Terahz Waves, 2020)

concentration over the frequency range studied

Using terahertz time-domain spectroscopy, thewithout an apparent percolation threshold. The

frequency-dependent conductivities of polyaniline

mechanisms in the two regions studied suggest thatemeraldine salt-polyethylene (PAni-PE) pellets

there is more dominant localization in the THz

were measured at different mass concentrations.

regimeTHz conductivities were compared to the behavior

percolative transport in the Hz-MHz region.

of DC conductivities measured using impedance

Temperature-dependent measurements showed aspectroscopy.

The DC conductivity behaviour

decreasing value of parameter S with increasing

with mass concentration showed a low percolation

temperature consistent with Correlated-Barrier

threshold. The frequency-dependent behavior in the

Hopping model. Lastly, the parameter S increases in

THz region follows the Mott-Davis behavior which

magnitude with decreasing amount of PAni in theshowscomposites reflective of varying conducting andstrongercorrelation

athigherPAniconcentration. At the same time, the conductivity

incontrast

with

a

more

dominant

non-conducting compositions.

increases exponentially with increasing PAni

II-D.

DEVELOPMENT OF WAVEFRONT SHAPING TECHNIQUE FOR ULTRAFAST OPTICALPULSESUltrafast nonlinear optical spectroscopy has become an indispensable tool to investigate various dynamical
processes in the condensed phase. Even though such spectroscopy is of great interest due to unique features ofthe structural and dynamical resolution, it is very difficult to perform the measurements in scattering media.
Generally, when coherent light propagates in scattering media, the scattered light forms a destructive
interference pattern, so-called, “speckle”. Wavefront shaping by spatial light modulator was shown to control
light propagation through scattering media. One can use this method to control input wavefront to design the
output field, for example, to focus the light at a desired position. However, it still remains a challenge tocontrol both spatial and temporal properties of ultrashort pulses simultaneously in scattering media. In thisstudy, we are developing the spatio-temporal pulse-shaping technique to control the amplitude and phase ofultrashort pulses both in space and in time.

Wavefront Shaping of Ultrashort Optical Pulses

spectroscopy and microscopy. However, it was

through Scattering Media

shown that one can focus the light at a desired spot

Kaoru Ohta

even through scattering media by spatially shaping

(11

th

Asian Conference on Ultrafast Phenomena

the wavefront of the incident light. For this wavefront

2020)

shaping, spatial light modulators (SLMs) are used toGenerally, it is considered that light scattering fromcontrol the propagation of the light with more than

the sample was a fundamental obstacle for opticalthousands
21

ofdegreesoffreedom.

Iterativeoptimization

algorithm,

digitalopticalphase

conjugation and optical transmission matrix (TM)methods

have

been

developed

to

focus

a

monochromatic light through scattering media.
Currently, we are developing the spatio-temporalpulse-shaping technique to control the amplitude andphase of ultrashort pulses both in space and time. For

Figure 1. Transmission images of ultrashort pulses

ultrashort pulses, it is important to control the

before (left) and after (right) optimization of thespectral phase distortions caused by the transmission

wavefront of the input pulses.

of the dispersive media.
In this study, a thin holographic diffuser wasused as a model system of the scattering media. We
utilized a non-collinear optical parametric amplifier
as a light source of the ultrashort pulses. We
determined the broadband TM and calculated thephase pattern of SLM to focus the pulse at aparticular position (Fig. 1). We also measured thespectra of the ultrashort pulses before and after the

Figure 2. Spectra of ultrashort pulses before (blue)

optimization (Fig. 2). In this study, we quantified theand after (green) optimization of the wavefront of thespectral and temporal characteristics of the optimized

input pulses. Inset shows the phase pattern of SLM

pulses and demonstrated the way to control the phaseused to generate the optimized spectra.

of the spectra by using the pulse shaper in time
domain.

II-E.

INTERMOLECULAR INTERACTIONS OF POLYMER STUDIED BY TERAHERTZ
SPECTROSCOPY

Low-frequency vibrational bands observed in the low-frequency Raman and terahertz (THz) spectra
originate from the higher-order structure, crystalline structure, and intermolecular interactions of polymer
materials. Therefore, THz and low-frequency Raman spectroscopy are unique techniques for analyzing
higher-order conformations and intermolecular hydrogen bonding in semi-crystalline polymers. However,the band assignment of THz spectra of polymers has not been studied well. Therefore, it is necessary todevelop band assignment methods in order to establish THz spectroscopy as a powerful and unique method
for exploring the structure and physical properties of polymers.

22

Week Hydrogen Bonding of Biodegradable

due to the influence of hydrogen bondings were

Polyesters Studied by Terahertz Spectroscopy

observed in the CH2 and C=O stretching vibration

H. Sato, C. Funaki

regions. The results of QCCs performed by using(10th

International

Conferenceon

Advanced

the Cartesian Coordinate Tensor Transfer (CCT)

Vibrational Spectroscopy (ICAVS 10), Invited)

method to assign the THz spectra of PCL suggest

The absorption peaks observed in the terahertz

that the peaks at 47 and 67 cm-1 reflect the atomic(THz) region reflect a higher-order structure,

motions of the C=O + CH2 moiety derived from thecrystalline structure, and intermolecular interactions

weak CH···O=C hydrogen bondings. The results of

such

THz

THz and IR spectral analysis, and QCCs all indicate

spectroscopy is a unique technique for analysingthat PCL forms three kinds of weak intermolecularhigher-order conformations and intermolecular

CH…O=C hydrogen bondings between the CH2interactions in semicrystalline polymers. We haveand C=O groups. This may be one of the causes forinvestigated changes of the higer-order strucure andthe low melting temperature but high crystallinityhydrogen bondins of several kinds of biodegradableof PCL.

as hydrogenbonding.

Therefore,polyesters such as poly(glycolic acid) (PGA),
poly-(R)-3-hydroxybutyrate (PHB), polylactic acid
(PLA), poly(ε-caprolactone) (PCL), poly (butylene
succinate) (PBS) by THz spectroscopy and THz
raman

spectroscopy

withquantumchemicalcalculations (QCCs).
The calculation of the interatomic distances
between C-H and O=C groups in PCL crystalline
indicate that the PCL chain has three kinds of weakintermolecular interactions between the CH2 andFigure 1. Experimental and calculated spectra of

C=O groups. In the IR spectra, significant changes

PCL.

A study of hydrogen bondings of PET and PBTengineering plastics because they have high meltingbypoint (Tm,PET = 250°C, Tm,PBT = 224°C) andterahertz

spectroscopy

andquantumchemical calculations

excellent physical properties. PET shows a highY. Yamamoto, H. Hoshina1, H. Satocrystallization temperature, however it has low

1

crystallization rate. On the other hand, PBTCenter for Advanced Photonics, RIKEN(10thInternational

Conferenceon

Advanced

containing two more CH2 groups than PET has highcrystallization rate, and its moldability is fine. In

Vibrational Spectroscopy (ICAVS 10))andthe low frequency region, the vibrational peaks duepoly(butylene terephthalate) (PBT) are crystalline

to the inter- and intra-molecular interactions

polymers which have been widely used asincluding hydrogen bondings and higher order

Poly(ethylene

terephthalate)

(PET)

23

structure can be observed. Therefore, it may be

and 113 cm-1 at room temperature. In heating

possible to elucidate causes of the difference in theprocess, the peak at around 113 cm-1 in the THz

crystallization process between PET and PBT byspectra seems to have a different thermal behavior

terahertz (THz) spectroscopy.

between PET and PBT. From the results of

PET and PBT obtained by Sigma Aldrich. PET

polarization measurement of PBT film, it isfilms and PBT films for THz spectroscopic

indicated that the peak at around 113 cm-1 ismeasurement were prepared by melting andderived from the both parallel and perpendicularpressing PET pellets and PBT pellets at 280°C andpolarization to the molecular chains. Therefore, this

250°C, respectively. The

werepeak may reflect the difference in hydrogenmeasured by TAS7400 terahertz spectroscopy

bondings between PET and PBT. Moreover, thesystem (ADVANTEST Co.; resolution: 7.6 GHz)

peak around at 111 cm-1 in the low frequency

and FARIS (JASCO Co.; resolution: 2 cm-1).

Raman spectra shifts to a lower frequency region

THz spectra

We calculated the interatomic distances of PET

with temperature in only PBT, and this peak does

and PBT from the reported crystal coordinate ofnot shift in PET. It is suggested that this peak also

them. As a result, there is a possibility that PET has

reflect the difference in hydrogen bondings between

the intramolecular hydrogen bonding, while PBTPET

has the intra- and inter-molecular hydrogen bonding.

low-frequency vibrational modes of polymers has

nd

and

PBT.

The

band

assignmentofderivative spectra

not been fully studied yet. In order to assignmentof PET and PBT during heating process, thethese bands, we have been tried to calculate by

In the THz spectra and their 2-1absorption peaks were observed at around 79 cm

quantum chemical calculations (QCCs).

Study on hydration of super absorbent polymer

molecules. We have investigated the interaction

by low-frequency Raman spectroscopychanges between super absorbent polymer and

T. Nasu, H. Satowater with hydration process, and the structure of(10th

International

Conferenceon

Advancedwater formed by network.

Vibrational Spectroscopy (ICAVS 10))The super absorbent polymer which we used

Super absorbent polymer (SPA) is provided by theas a sample has already included several percent ofcopolymerization of acrylic acid sodium, acrylic

water. Therefore, samples were heated with aacid and the bridging-related monomer. It is thevacuum oven for 10 h, 24 h and 48 h. Sodium

high molecular compound which can absorb a large

poly-acrylate (SPA) which has similar structure toquantity of water of approximately 100-1000 times

super absorbent polymer was also used as a sample.

of the self-weight. Now, it does not yet become

The Raman spectra were measured by XLF device

clear what kind of interaction works between the

manufactured by Ondax company (Excitation

super absorbent polymer and the water molecule,wavelength: 830nm, Resolution: 3.5cm-1, Exposure

and what kind of structure a water molecule

time: 1s, Averaging: 20).

absorbed in network structure forms between water24

During heating process, we could confirm thatpeak at 126 and 236 cm-1 were shown in the Ramanthe strength of each peak decreasing as heating time

spectra of sodium poly-acrylate. It indicates that a

increased, and a peak at 126 cm-1 shifted to a highly

peak of 77 cm-1 is due to the structure peculiar to afrequency region. It suggests that the size ofsuper absorbent polymer, and the peak at 126 andnetwork structure become smaller by losing water

236 cm-1 reflects structure to be common to supermolecules. The peak at 77, 126, and 236 cm-1 wereabsorbent polymer and both sodium poly-acrylate.

appeared in the super absorbent polymer, and the

The study of crystalline phase transition instrong hydrogen bonding interactions between PHB

PHB/PVPh blends using Far-IR, Raman, WAXD

and PVPh.
In

and 2D correlation analysis

thisstudy,

thehydrogenbonding

H. Sato1, D. Marlina, Y. Park1, H. Hoshina2, Y.

interactions and dynamics of the PHB/PVPh blend

Ozaki13, Y. M. Jung2

were investigated by low-frequency vibration

1

Kangwon National University, Korea

spectroscopy (Far-IR and Raman) and wide-angle

2

Center for Advanced Photonics, RIKEN

x-ray diffraction (WAXD). To explore interaction

3

Kwansei Gakuin University

between crystallinity and hydrogen bonding ofth(10 International Symposium on Two-dimensional

PHB/PVPh blend, hetero-spectral 2D-COS also

Correlation Spectroscopy (2DCOS-10), invited)

applied to concentration-dependent Far-IR, Raman

Biodegradable poly(hydroxybutyrate) (PHB) has

and WAXD. The results of 2D-COS will bebeen extensively studied to copolymerize and to

discussed deeply in this presentation.

blend with other polymers for improving their

References

mechanical, thermal, physical properties. PHB[1] S. Yamamoto, M. Miyada, H. Sato, H. Hoshina,

shows high crystallinity and it has a weak hydrogen

Y. Ozaki, J. Phys. Chem. B, 121, 1128 (2017).

bonding in the crystal structure as in the case of[2] F. Nishimura, H. Hoshina, Y. Ozaki, H. Sato,

polyglycolic

1,2

acid.

Moreover,

PHB

forms

hydrogen bonding between C=O group of PHB and
3,4

OH group of poly(4-vinyl phenol) (PVPh).

The

crystallinity and morphology of PHB can be
5changed by blending PVPh. Guo et al.

have

Polymer J., 51, 237 (2019).
[3] S. Yamamoto, Y. Morisawa, H. Sato, H.
Hoshina, Y. Ozaki, J. Phys. Chem. B, 117, 2180
(2013).
[4] D. Marlina, H. Sato, H. Hoshina, Y. Ozaki,

reported using DSC, WAXD and SAXS that

Polymer, 135, 331 (2018).

melting point of PHB decreased with increasing[5] L. Guo, H. Sato, T. Hashimoto, Y. Ozaki,

blending ratio in PVPh contents resulting fromMacromolecules, 45, 313 (2012).

25

Plasma Polymerization of Acrylic Acid for the

low-temperature

Tunable Synthesis of Glassy and Carboxylated

carboxylated NPs produced by the polymerization

Nanoparticlesof acrylic acid under the conditions of a glow

P. Pleskunov1, D. Nikitin1, R. Tafiichuk1, A.

discharge. In a monomer-deficient regime, theShelemin1, J. Hanus1, J. Kousal1, Z. Krtouš1, I.

strong fragmentation of monomer molecules by

Khalakhan1, P. Kúš1, T. Nasu, T. Nagahama, C.

electron impact results in the formation of 15

Funaki, H. Sato, M. Gawek2, A. Schoenhals2, A.

nm-sized NPs with <1% retention of the carboxyl

Choukourov1

groups. In an energy-deficient regime, larger 90

1Charles University

nm-sized NPs are formed with better retention of2

Bundesanstalt für Materialforschung und -prüfung

carboxyl groups that reaches 16%. All types of NPs(BAM)

exhibit a glass transition above room temperature,(J. Phys. Chem., 2020)

which makes them highly stable in an aqueous

Polymer

nanoparticles (NPs) can be highly

environment with no dissolution or swelling. The

attractive in numerous applications, including

NPs are also found to degrade thermally whenbiomedicine, where the use of inorganic matter mayheated above 150°C, with a decrease in the mean

be detrimental for living tissues. In conventional

NP size but with retention of the chemical

wet chemistry, polymerization and functionalization

composition. Thus, plasma polymerization provesof NPs with specific chemical groups involves

to be a versatile approach for the production ofcomplex and often numerous reactions. Here, we

polymer NPs with a tunable size distribution,

reportchemical composition, and physical properties.

onasolvent-free,

single-step,

plasma-based

synthesisof

Crystallization and crystalline dynamics ofdiffraction (WAXD) studies revealed that PVPhpoly(3-hydroxybutyrate)/poly(4-vinylphenol)

reduces the crystallinity of PHB in blends without apolymersignificant change in the crystal structure. The FIR

blendsstudiedbylow-frequency

vibrational spectroscopy

and low-frequency Raman spectra divided theD. Marlina, H. Hoshina1, Y. Ozaki2, H. Satoblends1

Center for Advanced Photonics, RIKEN

crystalline, less-ordered crystalline, and amorphous.

2

Kwansei Gakuin University

A new peak was observed at 135 cm−1 in the FIR(Polymer, 2019)

spectra of the PHB/PVPh blends, which may be

Composition-

and

into

three

categories:

high-orderedtemperature-dependentassigned to the less-ordered crystalline phase of

far-infrared (FIR), terahertz (THz), and low-

PHB, predicting the inter-molecular hydrogen-bondfrequency Raman spectra of poly(3-hydroxy-interactions of PHB/PVPh. The intensity ratio ofbutyrate)(PVPh)

the peaks at 97 and 82 cm−1 changed with thepolymer blends were measured to investigate theblending ratio variations owing to the crystalline

effects of PVPh in PHB crystallization. FIR,

dynamics of PHB. Deformation of the PHB helicallow-frequency Raman, and wide angle X-ray

structure occurred first, followed by weakening of(PHB)/poly(4-vinylphenol)26

the intra-molecular hydrogen-bond within PHB.

novelty of the present study is to demonstrate that

Shifts of several peaks were observed in the FIR

low-frequency vibrational spectroscopy is veryand low-frequency Raman spectra, suggesting thatsensitive to monitor changes from the intra-

the intra-molecular hydrogen-bond (CO⋯H-C-)

molecular hydrogen bonding to inter-molecularwithin PHB weakened with temperature. The

hydrogen bonding between PHB and PVPh.

Low-Frequency Vibrational Modes of Nylon 6

α-form nylon 6. On the basis of the calculations, theStudiedRaman

FIR and Raman bands at ∼ 100 cm–1 wereSpectroscopies and Density Functional Theory

successfully assigned to methylene torsion andCalculationstransverse motion of amide groups in which NH

S. Yamamoto1, E. Ohnishi2, H. Sato, H. Hoshina3,

and O atoms move out of the amide plane.

D. Ishikawa4, Y. Ozaki2

Decomposition of the calculated spectra revealed

1

Osaka Universitythat the intensities at ∼100 cm–1 in both spectra

2

Kwansei Gakuin University

mainly originate from the amide groups and only

3

Center for Advanced Photonics, RIKEN

secondarily from the methylene groups. Moreover,4

Fukushima University

the FIR intensities at ∼ 100 cm–1 were nearly(Polymer, 2019)perfectly governed by the amide groups, which

by

Using

Infraredand

Far-infrared (FIR) and low-frequency Raman bands–1

could be a reason why this FIR band is particularlyin the 90–400 cm region of crystalline nylon 6 insensitive

α form were assigned based on comparisons of

low-frequency bands. The FIR band at 222 cm–1

experimental spectra and quantum mechanical

was assigned to methylene torsion and transverse

calculations. A fragment methodology was appliedmotion of NH groups. Both FIR bands at 222 andin the calculations for explicit consideration of111

interchain interactions and crystal symmetry. The

methylene and amide groups. This will be a reason

main features in both Raman and FIR spectra were

for their sensitivity to interchain interactions in

reproduced

band

α-form nylon 6. Contrarily, the FIR band at 294

assignments based on density functional theory andcm–1 is in parallel polarization to the chain direction

the significant improvement of the conventional

and assigned to a deformation of C–CH2–CH2 andassignments for which there had been a big dispute.

bending motion of C═O in the amide plane. This isTemperature dependence of the experimental FIR

the reason why this band is not sensitive to thespectra has revealed that both bands at 222 and 111

structural transitions of nylon 6. Our previous

cm–1 are characteristic of the α-form structure.

works revealed that in regions of 125 and 70 cm–1,

Their intensities linearly decreased with increasing

there are specific vibrational peaks of crystalline

temperature with marked two transition points,

polyesters primarily arising from out-of-plane

which correspond to glass and Brill transitions.

motion of ester groups. We can find a similarity inBoth bands can be indicators of the lattice length of

125 and 70 cm–1 regions between crystalline

well,

which

enabled

the

27

cm–1

to

hydrogencontainbonds

perpendicularamongmotions

theofpolyesters and nylon 6 that both polymers show

cm–1, which are sensitive to the lattice length

specific out-of-plane vibrational peaks around 100

among polymer chains.

Investigation of crystallization behavior of(HC) was retarded due to the formation of large

asymmetric PLLA/PDLA blend using Raman

amount of stereocomplex (SC) in the isothermal

Imaging measurement

process. A unique spherulite morphology was

1

1

2

2

J. Hu , J. Wang , M. Wang , Y. Ozaki , H. Sato, J.

observed through polarized optical microscopy

Zhang1(POM) and the distribution of SC and HC in and

1

Qingdao University of Science & Technology

out of the big spherulite was revealed under the2

Kwansei Gakuin University

assistance of Raman imaging measurement. These(Polymer, 2019)

results demonstrated that the SC crystal dispersed

In the present study, isothermal crystallization ofhomogeneously both in the amorphous andasymmetric PLLA/PDLA blend (4/1) at aroundspherulite region. However, the HC mainly located100 °C was investigated by in-situ time-resolvedin the big spherulite area. A possible isothermal

FTIR and Raman Imaging measurement. FTIR

crystallization

result indicated that crystallization of homo-crystal

PLLA/PDLA blend was proposed.

28

processfortheasymmetricIII Terahertz Material Physics Laboratory
III-A.

HIGH FIELD ELECTRON SPIN RESONANCE (ESR) STUDIES OF QUANTUM SPINSYSTEMS

The quantum effects and the spin frustration effects prevent long-range order due to strong quantum
fluctuation and frustration. Their ground states at low temperature are attractive issue in field of solid statephysics. High-frequency high-field ESR is a powerful spectroscopic method to investigate the ground stateand lower excited state of the system, because the ESR observes directly the magnetic excitation.
Following the trends from a Grant-in-Aid for Scientific Research on Priority Areas “Novel states of matter
induced by frustration” (No.473, 2007-2011, Headed by Prof. H. Kawamura (Osaka University) and H.
Ohta was a member), we are studying these low dimensional antiferromagnets with frustration and related
multiferroic materials intensively. Appearance of breather, soliton and antisoliton modes are expected inwide frequency-field ESR measurements of S=1/2 Heisenberg antiferromagnetic chain with staggered D
vector system KCuMoO4(OH). We succeeded in observing these signals using micro single crystal of
KCuMoO4(OH). Then, the magnetic anisotropy of breather excitations, soliton and antisoliton modes will
be analyzed soon. Although many numbers of research have been performed for CsFeCl3, which is known
as S=2 triangular antiferromagnet with large D term, there are little reports of ESR measurements due tostrong dispersive absorption lines. Clear ESR absorption lines and precise D term of CsFeCl3 have been
observed by controlling the sample thickness depending on the wavelength of applied electromagnetic
waves. Following researches have been also performed by the joint research program of Molecular
Photoscience Research Center, Kobe University. We continued collaborations with M. Azuma's group in
Tokyo Institute of Technology for multiferroic and related materials. High-frequency ESR measurements ofmanganese perovskite PbMnO3 and relate compounds have been performed. High field ESR studies of
exotic Co dimer system CoSeO3 with collaboration from H. Kikuchi of University of Fukui revealed
fruitful magnetic phases in field and temperature. For other joint researches, high-field ESR and themagnetic susceptibility measurements of thin film of neodymium permanent magnet and fluorescentmaterials have been performed to obtain information of the magnetic anisotropy. And we also have joint
research with theoretical groups for obtaining experimental parameter from quantum calculations. In total,
our joint researches have been performed with 17 groups, and we have organized one scientific meetingwith joint research groups.
H. Ohta received the International Zavoisky Award on Sept. 26, 2019 at the city hall of Kazan andgave am award lecture "Way to the Multi-Extreme THz ESR". Zavoisky is well known as the founder ofEPR (ESR) in Kazan, 1944. In order to celebrate the 75th anniversary of EPR discovery, the international
conference EPR-75 (Sept. 23-27, 2019, Kazan, Russia) was held, and H. Ohta and S. Okubo were invited.
Especially H. Ohta gave an invited presentation in the special session "30 years of the International EPR(ESR) Society (IES)" at EPR-75. H. Ohta made 7 more invited talks at various conferences including topics
A, B and C in this report.

29

In meantime H. Ohta is continuing as the Immediate-Past President of IES (2018-2020) after finishing
the President (2015-2017) of the International EPR (ESR) Society (IES). H. Ohta is also acting as theAdvisory Council of APES (Asia-Pacific EPR/ESR Society), and the Council Member of the Society ofElectron Spin Science and Technology (SEST). H. Ohta finished his term as the President of the Japan
Society of Infrared Science and Technology (2017-2019).
Moreover, in order to strengthen the pulsed magnetic field researches in the western Japan region, we
have been continuing the activities of The KOFUC (Kobe-Osaka-Osaka Prefecture-Fukui Universities
Centers) Network since 2014.

III-B.

DEVELOPMENT OF NOVEL ESR TECHNIQUES IN THE THz REGION USING
NANOMEMBRANE AND PHOTOCONDUCTIVE ANTENNA

Force-detection of electron spin resonance is a powerful technique for sensitive detection of a tiny-volume
sample. In our setup, SiNx nanomembranes were used to detect an ESR-induced magnetization change of thesample. We applied this technique to various magnetic systems including 1D and 2D antiferromagnets andsuccessfully observed multi-frequency ESR signals to get microscopic insights. Another promising
application of this technique is metalloproteins in which transition metal ions play important roles inbiochemical reactions. We previously succeeded in ESR detection of frozen myoglobin solution. We
continued collaborations with H. Ninomiya and H. Horitani at Saga University to reveal the roles of metal
ions in their biochemical reactions by the joint research program of Molecular Photoscience Research Center,
Kobe University.
The problem is that a high concentration of protein solution was needed to detect ESR signals frommetalloproteins due to the low signal-to-noise ratio. To overcome this problem, our technique was combinedwith a high-power THz source, gyroton, at Fukui University. In collaborations with Y. Ishikawa and S.
Mitsudo, we were able to improve the signal-to-noise ratio greatly and observed ESR signals even at room
temperature for radical species. Its application to hemoproteins will be tested in the near future.
Takahashi also conducted the research project from JST-PRESTO's program "Thermal Science andControl of Spectral Energy Transport", in which the heat transport of magnetic materials was investigated byhigh-frequency ESR spectroscopy.
E. Ohmichi gave an oral presentation on his broadband force-detected ESR system at IRMMW 2019held at Paris (1-9 September 2019). H. Takahashi was awarded from SEST on his developments offorce-detected ESR technique based on nanomembrane and gave an invited talk at the 58th SEST annual
meeting (7-9 November 2019) held at Kawasaki.
H. Takahashi also gave an invited talk at “The Future of Topological Materials” held on October 2-5,
2019 in Princeton (US).
We also developed broadband ESR spectroscopy system using photoconductive antenna (PCA). This
device was able to cover the entire frequency range from 0.05 to 1.1 THz, allowing seamless ESR

30

spectroscopy in the THz region. We applied this technique to radical species, DPPH and TEMPOL, whose gfactors are closely located together, and successfully discriminated two ESR spectra above 0.1 THz. Besides,
we clearly resolved two individual ESR signals of copper sulfate, which were known to be merged in the
microwave region. As a promising application, characterization of electrode materials of lithium ion batteries
was tested. We measured lithium manganese oxide at room temperature, and successfully observed a broad
ESR absorption. The line width was greater than 1 T, indicating that high-frequency ESR technique is
indispensable for detection of these kinds of transition metal compounds.

Terahertz electron paramagnetic resonancethe electronic structure of solid-state samples in a

spectroscopy

microscopic

using

frequency-tunable

continuous-wave

photomixers

based

on

manner.

Fiber-coupled

photo-

conductive antennae were used to generate andphotoconductive antennae

detect continuous THz waves obtained as the beatE. Ohmichi1, T. Fujimoto1, K. Minato1, and H.

signals from two laser beams with different

Ohta2

wavelengths. We will show some examples of EPR

1

Graduate School of Science, Kobe University

spectroscopy obtained by multi-frequency EPR

2

Molecular Photoscience Research Center, Kobe

measurements at room temperature. The technique

University

reported here has several advantages, including(Appl. Phys. Lett. 116 (2020) 051101/1-5)

high spectral resolution, wide frequency-range

In this article, we demonstrate terahertz (THz)

operation, high dynamic range, owing to theelectroncontinuous-wave

paramagnetic

spectroscopy

using

resonancea(EPR)frequency-tunable

(cw)

and

tunablegeneration/detection of THz waves.

photomixing source/detection system to investigate

III-C.

DEVELOPMENT AND APPLICATION OF HIGH-PRESSURE THz ESR SYSTEM

High-pressure THz ESR is one of the most powerful techniques to investigate the magnetic properties
under pressure. It can reveal the spin states directly from the microscopic point of view. We developed thehigh-pressure THz ESR systems whose maximum pressure is 2.5 GPa by combining 10 T superconducting
magnet in Kobe and 25 T superconducting magnet in IMR, Tohoku University so far.
We modified this system to fit the 15 T superconducting magnet equipped with the variabletemperature insert (VTI), and developed a new pressure cell so as to be fitted to the VTI. We confirmed thatthe new pressure cell can generate the pressure up to at least 2 GPa repeatedly. With this 15 T high-pressure
ESR system, ESR measurement was performed on the triangular antiferromagnet CsCuCl3. A new ESR
mode which is expected to correspond to the 1/3 magnetization plateau was successfully observed ataround 0.8 GPa. The 1/3 magnetization plateau was found recently in this compound and it has attracted31

much attention. R. Okuto gave the poster presentation related with this topic at ISSP workshop (December
3-5, Osaka) and received the poster award.
One of the remaining problems in the high-pressure THz ESR system is that the pressure calibration
method has not been established. Therefore, we developed a new high-pressure ESR system which isequipped with the inductive and pickup coils outside of the pressure cell to measure the AC magnetic
susceptibility of tin set in the pressure cell. The change of the superconducting transition temperature of tin
by pressure is well known and this change is used to calibrate pressure widely. We succeeded in detecting
the superconducting transition temperature of tin by this system. M. Yasutani gave the poster presentation
related with this topic at ISSP workshop (December 3-5, Osaka) and received the poster award.

Development of High ‐ Field and High ‐We have developed a new hybrid-type pressure

Pressure ESR System and Application tocell for the high-pressure and high-field electron

Triangular Antiferromagnet CsCuCl3

spin resonance (ESR) measurement using a widely

Ryosuke Okuto1, Eito Ohki1, Takahiro Sakurai2,

used Oxford 15 T superconducting magnet with

Hijii3,

Takahashi4,

Eiji

the variable temperature insert (VTI). The size of

Ohmichi1, Susumu Okubo3, Hitoshi Ohta3,

the pressure cell was optimized and a probe was

Yoshiya Uwatoko5, Hidekazu Tanaka6also specially designed so as to be fitted to the VTI.

1

Graduate School of Science, Kobe University

We confirmed that the new pressure cell can

2

Research

Keigo

Hideyuki

Facility

Centerfor

Scienceandgenerate the pressure up to at least 2.0 GPa

Technology, Kobe University

repeatedly.

3

Molecular Photoscience Research Center, Kobe

high-pressure and high-field ESR measurement

University

was performed on the triangular antiferromagnet

4

Organizationfor

AdvancedandIntegrated

Using

this

new

ESR

system,CsCuCl3 for H‖c at 4.2 K in the frequency region

Research, Kobe University

60 GHz–420 GHz. We succeeded in observing the5Institute for Solid State Physics, University ofsignificant pressure effect of this compound.

Tokyo

Moreover, a new ESR mode which is expected to6

Department of Physics, Tokyo Institute ofcorrespond to the 1/3 magnetization plateau wasTechnology

observed at 0.80 GPa.

(Applied

Magnetic

Resonance,

50(2019).

1059-1065）

III-D. MAGNETIZATION MEASUREMENTS USING SQUID MAGNETOMETER
The installation of SQUID magnetometer in 2010 by a Grant-in-Aid Creative Scientific Research“Development of properties and functionalities by precise control of rare-earth doping” (2007-2011, Prof.
Y. Fujiwara (Osaka University)) opened up wide varieties of collaborative researches. From 201032

applications of SQUID magnetometer to various material researches spread out continuously. It is also
supporting the user programs of Molecular Photoscience Research Center, Kobe University since 2017.
Users of SQUID magnetometer are Fujiwara group (Osaka University), Mochida and Takahashi group,
Uchino group (Department of Chemistry, Kobe University), Sugawara and Matsuoka group, and Kotegawa
and Tou group (Department of Physics, Kobe University), T. Sakurai, S. Hara and Y. Saito (Center for
Supports to Research and Education Activities, Kobe University).

Proximity

couplingofsuperconducting

We explore the electrical and magnetic properties

nanograins with fractal distributionsof a fractal assembly of Josephson junctions with

T. Uchino1, N. Teramachi1, R. Matsuzaki1, E.

transparent interfaces. For this purpose, we employ

Tsushima1, S. Fujii1, Y. Seto2, K. Takahashi1, T.

an Mg/MgO/MgB2 nanocomposite with ∼ 16

Mori3,

Y.

vol. % of MgB2 nanograins, which are distributed

Sakaguchi6, K. Ohishi6, A. Koda7, T. Sakurai8,

in a fractal manner in the normal matrix.

and H. Ohta9

Irrespective of the low volume fraction of MgB2

1

Department of Chemistry, Graduate School ofnanograins, the nanocomposite behaves as a

Science, Kobe Universitybulk-like superconductor, i.e., zero resistivity,2

Department of Planetology, Graduate School of

perfect diamagnetism, and strong vortex pinning.

Science, Kobe University

Thus, a global Josephson phase coherence is3Y.

Adachi4,International

Y.

CenterNanoarchitectonics,

Nagashima5,

forNational

Materials
Instituteforachieved in the nanocomposite. The lower (Hc1J)
and higher (Hc2J) critical fields of the Josephson

Materials Science

network are exceptionally high (Hc1J = 96 Oe and4

Optoelectonic Materials Group, Optical and

Hc2J = 83.5 kOe) as compared to those reported

Electronic Materials Unit, National Institute forpreviously for granular superconductors. This will

Materials Science

give

5

Nippon Sheet Glass Co., LTDsuperconducting

6

Neutron

ScienceandTechnology

anexampleofrobustcoherence

macroscopic

derivedfromCenter,long-range proximity coupling among fractally

Comprehensive Research Organization for Science

distributed superconducting nanograins throughand Society (CROSS)

quantum interference of Andreev quasiparticles.

7

Institute of Materials Structure Science, High

Transverse-field muon spin rotation measurements

Energy Accelerator Research Organization

reveal that the mean internal field in the

8

Center for Support to Research and Education

superconducting

Activities, Kobe University

decreasing temperature below which the Josephson

9

Molecular Photoscience Research Center, Kobe

phase

University

diamagnetic response observed in magnetization(Physical Review B 101, 035146 (2020))

measurements. This unusual behavior implies a

coherence

mixed
sets

state
in,

increases
opposite

to

with
the

highly disordered and fluctuating nature of the33

Josephson vortices in the present superconducting

nanocomposite.

Magnetic and Transport Properties of a New investigated by the magnetization, the electricalresistivity, the ac magnetic susceptibility and the

Kondo-Lattice Compound Ce3NbRh4Ge4

Eiichi Matsuoka1, Seiya Ito1, Hitoshi Sugawara1, specific-heat measurements. Ce3NbRh4Ge4 is a
Takahiro Sakurai2, and Hitoshi Ohta3
1

Kondo-lattice compound with the trivalent Ce ions at

Department of Physics, Graduate School of Science, high temperatures and exhibits ferromagnetic or
ferrimagnetic transition at TC = 1.8 K. The small

Kobe University
2

Research

Facility

Centerfor

Scienceand magnetization value at 1.8 K (0.18 𝜇B /Ce at 5 T), thesmall entropy at TC (0.2R ln 2), and the large

Technology, Kobe University
3

Molecular Photoscience Research Center, Kobe electronic specific-heat coefficient (0.131–0.163

University

J/Ce-mol K2) are presumably due to the vicinity of a

(JPS Conf. Proc. 29, 014002 (2020))

quantum critical point.

Magnetic and transport properties of a new
orthorhombic compound Ce3NbRh4Ge4 have been

Valence states and the magnetism of Eu ions in

Tohoku University

Eu-doped GaN

7

Nunokawa1,

TakumiYasufumi

Fujiwara1,

The Institute of Solid State Physics, The

University of Tokyo

Yusuke Miyata2, Norifumi Fujimura2, Takahiro

8

Sakurai3, Hitoshi Ohta4, Akira Masago5, Hikari

Graduate School of Engineering, The University of

Shinya5,6,

Tokyo

Tetsuya

Fukushima5,7,

Kazunori

Sato1,5 and Hiroshi Katayama-Yoshida8
1Graduate

SchoolofEngineering,

Graduatefor

Spintronics

Research

Network,(J. Appl. Phys. 127, (2020) 083901/1-7)
Osaka

University
2

Center

The relationship between the valence states of Eu
ions in Eu-doped GaN and their magnetic

SchoolofEngineering,Osaka

properties is investigated by experiments andPrefecture University

simulations. X-ray measurements have verified

3

Center for Support to Research and Educationthat the valence states of Eu ions can be controlled

Activities, Kobe University

through growth temperature and codopants and4

Molecular Photoscience Research Center, Kobe

that the highest concentration of divalent Eu ions is

University

found in samples grown at 700°C by codoping

5

Centerfor

Spintronics

Research

Network,with Si and O. According to our phenomenological

Graduate School of Engineering Science, Osaka

analysis, magnetoresistance measurement implies

University

the presence of Zener’s p–f exchange interaction.

6

However, the magnetization dependence on an

Research Institute of Electrical Communication,34

external magnetic field shows non-hysteretic

formation of nanostructures of the magnetic

sigmoidal

impurities

curves in

all

the

samples.

Our

in

the

samplesbyspinodalsimulations suggest that this is due to thedecomposition.

Helimagnetic Structure and Heavy-Fermion-

30 K is composed of Mn tetrahedrons and zigzag

Like Behavior in the Vicinity of the Quantum

chains formed by three inequivalent Mn sites. Due

Critical Point in Mn3P

to the nearly frustrated lattice with many short

H. Kotegawa1, M. Matsuda2, Feng Ye2, Y. Tani1,

Mn-Mn bonds, competition of the exchange

K. Uda1, Y. Kuwata1, H. Tou1, E. Matsuoka1, H.

interactions is expected. We here investigate theSugawara1, T. Sakurai3, H. Ohta1,4, H. Harima1,

magnetic

K. Takeda5, J. Hayashi5, S. Araki6, and T. C.

including pressure effect in single crystals of thisKobayashi6material, and reveal a complex yet well-ordered

1

Department of Physics, Kobe University

helimagnetic structure. The itinerant character of2

Neutron Scattering Division, Oak Ridge National

this materials is strong, and the ordered state with

Laboratory

small magnetic moments is easily suppressed3

Research

Facility

Centerfor

Scienceandstructureandphysicalproperties

under pressure, exhibiting a quantum critical point

Technology, Kobe University

at ∼1.6 GPa. The remarkable mass renormalization,

4

Molecular Photoscience Research Center, Kobe

even in the ordered state, and an incoherent-

University

coherent crossover in the low-temperature region,

5

Muroran Institute of Technology

characterize an unusual electronic state in Mn3P,

6

Department of Physics, Okayama University

which is most likely effected by the underlying(Phys. Rev. Lett., 124 (2020) 087202)

frustration effect.

Antiferromagnet Mn3P with Neel temperature TN =III-E.

SPIN AND LATTICE DYNAMICS STUDIED BY PUMP-PROBE AND TERAHERTZ
SPECTROSCOPIESThe terahertz region in the electromagnetic spectrum has attracted research attention in solid-state physics,
because elementary excitations in solid-state materials such as phonons and magnons play important roles,
and many of those dynamics appear in this energy region. The ultrafast spin dynamics and optical spin
control in magnetic materials are attractive topics because of the potential applications in the developmentsof ultrafast spin control, spintronics, quantum computing, and optical control of correlated spin systems.
We studied the spin and lattice dynamics in solid-state materials using optical pump-probe spectroscopy
and terahertz time-domain spectroscopy (THz-TDS). The generation and detection of magnetization andbirefringence using optical and electric pulses are very useful to observe the spin and lattice dynamics inferromagnetic, antiferromagnetic, multiferroic, and magnetoelectric materials. The time-domain

35spectroscopy has a large potential for the ultrafast, broadband, and accurate observation of elementary
excitation dynamics in the terahertz region.

Spatial and temporal dynamics of thermalThis provides new approaches to achieving

diffusion in clathrate compounds

high-performance

K. Shaku1, Y. Oishi1, K. Suekuni2, T. Onimaru3,

device.

T. Takabatake3, and T. Kohmoto1,4

thermoelectric

conversion

In this report, the rise and relaxation of the1

Graduate School of Science, Kobe University

lattice distortion induced by a spatially separated

2

Kyushu University

pump light from a probe light were observed as the3

Hiroshima University

intensity or polarization change of the reflected

4

Molecular Photoscience Research Center, Kobe

probe light. The signal of lattice distortion appears

University

later as the separation between the pump and probe(iSPN 2019)

lights

The thermal diffusion dynamics of the opticallyindicate that the lattice distortion diffuses spatiallyinduced lattice distortion in type-I clathrate

in the sample. In our experiment, the direct

X8Ga16Ge30 (X=Ba, Sr, Eu; BGG, SGG, EGG) is

observation of the spatial and temporal dynamics

studied by using polarization spectroscopy with theof thermal and carrier diffusions is demonstrated.

pump-probe technique. This compound has a cage

We found two components of the diffusion

structure which consists of Ga and Ge atoms, andcoefficient, a slow component and a fast

X ion is a guest in the cage. The motion of guest

component, and they are thought to represent theions, so-called “rattling motion”, disturbs thelatticepropagation of acoustic phonons, resulting inrespectively.

becomes

diffusionlarger.

andExperimentalthecarrier

results

diffusion

suppression of the lattice thermal conductivity.

inducedorders coexist, have been found. Many of them aremagnetization in antiferromagnetic chromium

antiferromagnets which have spin structures ofoxide observed by Faraday rotation

spiral type, and their giant magnetoelectric effect

Dynamics

oftheelectric-field

1

1

1

Ryo Hikita , Hiroki Taniguchi , Takahiro Shinkaihas been attracting attention. Antiferromagnetic

and Toshiro Kohmoto1,2

chromium oxide (Cr2O3, Néel temperature TN =1

Graduate School of Science, Kobe University

307 K) is not multiferroic, but is known to show

2

Molecular Photoscience Research Center, Kobe

the linear magnetoelectric effect, in which the

University

electric polarization is induced in proportion to the(J. Phys.: Conf. Ser., 2019)

applied magnetic field and the magnetization is

In recent years, various types of multiferroic

induced in proportion to the applied electric field.

materials, in which ferroelectric and magnetic

The electric-field induced magnetization has beenin the millisecond and a pulse probe light in theobserved as the response to the applied alternating

nanosecond region. In the millisecond region, it

electric field. The electromotive force in a pickup

was found that the Faraday-rotation amplitude

coil or Faraday rotation of a probe light was

linearly depends on the electric field. This result

detected as the magnetization signal, where thesuggests the linear magnetoelectric effect. In the36alternating frequency of 10 -10 Hz was used.

nanosecond region, the Faraday-rotation amplitude

However, the dynamics of electric-field induced

linearly depends on the electric field, decreases

magnetization in the time regions shorter thanwith increasing temperature, and disappears above

microseconds has not been reported so far.

TN. In our experiment, the response time of theWeobserved

electric-field

dynamics

oftheelectric-field induced magnetization to the electric

magnetizationinanfield could not be determined, but it was found thattheinducedantiferromagnet Cr2O3 by the Faraday-rotation

the response time is faster than 5 ns.

measurement using a continuous-wave probe lightElectric-field induced magnetization in YIG

inducedobserved by Faraday rotation

investigated in detail.

Keisuke Fujimoto1, Takashi Hasunuma1, andelectric

polarization

in

YIG

were

We observed the electric-field dependence

Toshiro Kohmoto1,2

and

1

Graduate School of Science, Kobe University

electric-filed induced magnetization in YIG by

2

Molecular Photoscience Research Center, Kobe

Faraday rotation. The Faraday-rotation amplitude

University

can be given by a sum of two components linear(J. Phys.: Conf. Ser., 2019)and quadratic in the electric field, and we

Yttrium iron garnet (YIG, Y3Fe5O12) is aevaluated the coefficients for the two components

ferrimagnetic material with a Curie temperature of

from the two measurements independently. It was

560 K and is known to show a large Faraday effect.

found that the linear and quadratic components

YIG is also known to show the magnetoelectric

coexist below 250 K in the electric-field induced(ME)

effectmagnetization in YIG. The linear component is(magnetic-field induced electric polarization) at

dominant below 150 K, the ratio of the linear

room temperature and the first-order ME effectcomponent to the quadratic one decreases around(electric-field induced magnetization) below 125 K

180 K, and the sign of its coefficient is inverted

have

above 180 K.

effect.

been

Thesecond-orderreported.

ME

Recently,themagnetocapacitance effect and the magnetic-fieldthemagnetic-fielddependence

of

the

Original Papers

発表論文

authorsjournalVol.
title
Yasuhiro Kobori, Takumi
Transient Electron Spin Polarization
J. Phys. Chem. C 123
Ako Shinya Oyama, Takashi Imaging of Heterogeneous
Tachikawa, Kazuhiro
Charge-Separation Geometries at
Marumoto
Bulk-Heterojunction Interfaces in Organic
Solar Cells
Yasunori Matsui, Shuhei
Exergonic Intramolecular Singlet Fission J. Phys. Chem. C 123
Kawaoka, Hirokiof an Adamantane-Linked Tetracene Dyad
Nagashima, Tatsuo
via Twin Quintet Multiexcitons
Nakagawa, Naoki Okamura,
Takuya Ogaki, Eisuke Ohta,
Seiji Akimoto, Ayana
Sato-Tomita, Shigeyuki
Yagi, Yasuhiro Kobori,Hiroshi Ikeda
Toshiyuki Saegusa, Hayato Controlled Orientations of Neighboring
J. Am. Chem. Soc. 141
Sakai, Hiroki Nagashima,
Tetracene Units by Mixed Self-Assembled
Yasuhiro Kobori, Nikolai V. Monolayers on Gold Nanoclusters for
Tkachenko, Taku Hasobe
High-Yield and Long-Lived Triplet
Excited States through Singlet Fission
Manabu Sakurai, Yasuhiro Structural Dynamics of Lipid Bilayer
J. Phys. Chem. B 123
Kobori, Takashi Tachikawa Membranes Explored by Magnetic Field
Effect-Based Fluorescence Microscopy
Kazutaka Hirakawa,
Mariko Yamada,Shigetoshi Okazaki,
Morihiko Hamada,Yasuhiro Kobori
Saki Matsuda, Shinya
Oyama, Yasuhiro
Kobori
Seigo Mizutani, Izuru
Karimata, Longjie An,
Takamasa Sato, Yasuhiro
Kobori, Hiroshi Onishi,
and Takashi Tachikawa
Zhujun Zhang, Izuru
Karimata, Hiroki
Nagashima, Shunsuke
Muto, Koji Ohara,
Kunihisa Sugimoto, andTakashi Tachikawa
Manabu Sakurai, Yasuhiro
Kobori, and Takashi
TachikawaYuta Murakami, Takashi
Kamegawa, Yasuhiro
Kobori, and Takashi
TachikawaFeng Zhang; Houng-Wei
Wang, Keisuke Tominaga,
Michitoshi Hayashi, Tetsuo
Sasaki

page
year
13472-13481 2019.5.15

18813-18823

2019.7.814720-14727

2019.9.6

10896-10902

2019.11.
26

Electrostatic Interaction with Anionic
Polymer Activates Berberine
Photosensitizer

Photomedicine
40
and Photobiology

4-7

2019.12

Electron spin polarization generated bytransport of singlet and quintet
multiexcitons to spin-correlated triplet
pairs during singlet fissions
Charge Carrier Dynamics in Sr-Doped
NaTaO3 Photocatalysts Revealed by
Deep Ultraviolet Single-Particle
Microspectroscopy

Chem. Sci.

DOI:
10.1039/c9sc
04949e2020.2.21

J. Phys. Chem.
C

123

12592-12598

2019.4.30

Interfacial Oxygen Vacancies Yielding
Long-Lived Holes in Hematite
Mesocrystal-Based PhotoanodesNat. Commun.

10

4832

2019.10.2
3Structural Dynamics of Lipid Bilayer
Membranes Explored by Magnetic Field
Effect Based Fluorescence Microscopy

J. Phys. Chem.
B

123

10896-10902

2019.11.2
6

TiO2 Superstructures with Oriented
Nanospaces: A Strategy for Efficient andSelective Photocatalysis

Nanoscalein press

THz Fingerprints of Short-Range
Correlations of Disordered Atoms in
Diflunisal

J. Phys. Chem. A 123(21)4555-4564

38

2019. 4.
30

Feng Zhang, Houng-Wei
Wang, Keisuke Tominaga,
Michitoshi Hayashi, Tetsuo
SasakiHigh-resolution THz Spectroscopy and
Solid-state Density Functional Theory
Calculations of Polycyclic Aromatic
Hydrocarbons

Yu Kadomura, Naoki
Yamamoto, Keisuke
Tominaga

Broadband dielectric spectroscopy fromsub GHz to THz of hydrated lipid bilayerof DMPC

Alvin Karlo G. Tapia and
Keisuke Tominaga,
Dian Marlina, Yeonju Park,
Hiromichi Hoshina,
Yukihiro Ozaki, Young
Mee Jung, Harumi Sato

Pavel Pleskunov, Daniil
Nikitin, Renata Tafiichuk,
Artem Shelemin, Jan
Hanus, Jaroslav Kousal,Zdeněk Krtouš , Ivan
Khalakhan, Peter Kúš,
Tatsuro Nasu, Tomoki
Nagahama, Chihiro
Funaki, Harumi Sato,
Marcel Gawek, Andreas
Schoenhals, Andrei
Choukourov
Dian Marlina, Hiromichi
Hoshina, Yukihiro Ozaki,
Harumi Sato

Shigeki Yamamoto, Erika
Ohnishi, Harumi Sato,
Hiromichi Hoshina,
Daitaro Ishikawa, Yukihiro
Ozaki
Jian Hu, Jiping Wang,
Mengfan Wang, Yukihiro
Ozaki, Harumi Sato,
Jianming Zhang
Ryosuke Okuto, Eito Ohki,
Takahiro Sakurai, Keigo
Hijii, Hideyuki Takahashi,
Eiji Ohmichi, Susumu
Okubo, Hitoshi Ohta,
Yoshiya Uwatoko,
Hidekazu Tanaka
T. Uchino, N. Teramachi,
R. Matsuzaki, E. Tsushima,
S. Fujii, Y. Seto, K.
Takahashi, T. Mori, Y.
Adachi, Y. Nagashima, Y.
Sakaguchi, K. Ohishi, A.
Koda, T. Sakurai, and H.

J. Infrared Milli
Terahz Waves,Special Issue on
the Interpretationof Terahertz
SpectraEur. Phys. J. E
42

in press

2019. 9.
10

139-146

2019. 10.
30

Temperature Dependence of THz
Conductivity in Polyaniline Emeraldine
Salt-Polyethylene Pellets

J. Infrared Milli
Terahz Waves

258-2642020.1.6

A study on blend ratio-dependent far-IR
and low-frequency Raman spectra and
WAXD patterns of poly(3-hydroxylbutyrate)/poly(4-vinylphenol) usinghomospectral and heterospectral
two-dimensional correlation
spectroscopy
Plasma Polymerization of Acrylic Acidfor the Tunable Synthesis of Glassy andCarboxylated Nanoparticles

Analytical
ScienceJ. Phys. Chem.
B

124

668-6782020. 1. 2

Crystallization and crystalline dynamics
of poly(3-hydroxybutyrate) /poly(4-vinylphenol) polymer blends
studied by low-frequency vibrational
spectroscopy
Low-Frequency Vibrational Modes of
Nylon 6 Studied by Using Infrared andRaman Spectroscopies and Density
Functional Theory Calculations

Polymer

1811217902019. 10.
24

J. Phys. Chem.
B

123

5368−5376

2019 June
12

Investigation of crystallization behaviorof asymmetric PLLA/PDLA blend using
Raman Imaging measurement

Polymer172

1−62019. 5.
20

Development of High‐Field and High‐
Pressure ESR System and Application to
Triangular Antiferromagnet CsCuCl3

Appl. Magn.
Reson.

50

1059–1065

2019.5

Proximity coupling of superconducting
nanograins with fractal distributions

Phys. Rev. B

101

0351462020.139

41

in press

Ohta

E. Ohmichi, T. Fujimoto,K. Minato, and H. Ohta

E. Matsuoka, S. Ito, H.
Sugawara, T. Sakurai, and
H. Ohta
Takumi Nunokawa,
Yasufumi Fujiwara,
Yusuke Miyata, Norifumi
Fujimura, Takahiro
Sakurai, Hitoshi Ohta,
Akira Masago, Hikari
Shinya, Tetsuya
Fukushima, Kazunori Sato,and Hiroshi
Katayama-Yoshida
H. Kotegawa, M. Matsuda,Feng Ye, Y. Tani, K. Uda,
Y. Kuwata, H. Tou, E.
Matsuoka, H. Sugawara1,
T. Sakurai, H. Ohta, H.
Harima, K. Takeda, J.
Hayashi, S. Araki, and T.
C. Kobayashi
R. Hikita, H. Taniguchi, T.
Shinkai, and T. Kohmoto

K. Fujimoto, T. Hasunuma,
and T. Kohmoto

Terahertz electron paramagnetic
resonance spectroscopy using
continuous-wave frequency-tunable
photomixers based on photoconductive
antennae
Magnetic and Transport Properties of a
New Kondo-Lattice Compound
Ce3NbRh4Ge4

Appl. Phys. Lett.

116

051101/1-5

2020.2

JPS Conf. Proc.

290140022020.2

Valence states and the magnetism of Eu
ions in Eu-doped GaN

J. Appl. Phys.

127083901/1-7

2020.2

Helimagnetic Structure andHeavy-Fermion-Like Behavior in theVicinity of the Quantum Critical Point in
Mn3P

Phys. Rev. Lett.

124

0872022020.2

Dynamics of the electric-field induced
magnetization in antiferromagnetic
chromium oxide observed by Faraday
rotation
Electric-field induced magnetization in
YIG observed by Faraday rotation

J. Phys.: Conf.
Ser.

1220

0120172019

J. Phys.: Conf.
Ser.

1220

012055201940

Invited Talks (domestic and international)
発表者氏
名

開催時期

小堀康博
Y. Kobori2019.4.
12

開催地

plenary

招待講演(国内および国際研究集会)

学会名

講演題目

Unveiling Primary Photo-Energy Conversion
Mechanisms by Transient Electron Spin Polarization
Imaging SpectroscopyorinviteNational
Chiao Tung
University

invite2019.5.26 Dallas, USA

inviteColloquium in
Department of Applied
Chemistry, National
Chiao Tung University
235th ECS Meeting2019.5.28 Dallas, USA

invite235th ECS Meeting2019.6.16 淡路夢舞台

invite2019.9.21 Northweastern

invite6th Awaji International
Molecular Geometries and Motions Drive Quintet
Workshop on “Electron Multiexcitons via Singlet Fissions
Spin Science &Technology: Biologicaland Materials Science
Oriented Applications”(6th AWEST 2019)
Wasielewski Symposium Transport of Spin-Correlated Multiexciton via(Wazapalooza2019)
Singlet Fission

University,
Evanston, USA

2019.5.
25

仁川・韓国

2019.10.31

東京

13th Japanese-Russian
Workshop on “Open
Shell Compounds andMolecular Spin Devices
inivite 5th Kanto Area Spin
Chemistry Meeting (4th
KASC)
invite International
Conference on
Photocatalysis andPhotoenergy 2019
(ICoPP 2019)invite 東京工業大学講演会

2019.11.1神戸

invite2020.3.
25

千葉

invite2019.6.
14-16

福井2019.6.
25-28

Daejeon,
Korea

2019.7
5-12

Paris, France

tutorial 2nd Japan-Philipines
lecture Terahertz ResearchWorkshopinvite 5th International
Conference on Ultrafast
Structural Dynamics
invite 50th General Assembly& 47th IUPAC World
Chemistry Congress2019.11. 淡路夢舞台
102019.12.7 埼玉大学

立川貴士
T.
Tachikawa

富永圭介
K.
Tominaga

inviteIndo-Japan workshop
Frontiers in Molecular
Spectroscopy: From
Fundamentals to
Applications in
Chemistry and Biology
日本化学会第 100 春
季年会(2020)

41

Transient Electron Spin Polarization Imaging of
Photoinduced Interfacial Charge Separation
Geometries in Organic Photovoltaic Cell
Geometry and Dynamics of Quintet Multiexciton
Studied By Time-Resolved EPR

Electron Spin Polarization by Transports of
Spin-Entanglements after Triplet-Triplet
Dissociations in Singlet Fission
Electron Spin Polarization Transfers in
Charge-Separation and in Singlet Fission
Development of Mesocrystalline Photoanodes for
Efficient Water Splitting

光エネルギー変換反応の単一粒子・単一分子発
光イメージング
Development of Mesocrystal-Based Photoanodes
for Efficient Solar Water Splitting

刺激応答構造変化の１粒子発光観測

Recent Advances in THz Molecular Science

Hydrogen-bond Dynamics of 9-Fluorenone
Derivatives in Water Probed by 2D-IR
Spectroscopy
Charge Carrier Dynamics inDiketopyrrolopyrrole-linked TetrabenzoporphyrinFilms Studied By Time-resolved Terahertz
Spectroscopy太田薫
K. Ohta

2019.9.
19-21

Kolkata,India

plenary2019.
11.7-9Bombay,India

plenary2019.
10.30-1
1.2

神戸

2020.1.
5-9

Mumbai,India

2020.1.
7

Kanpur,India

2020.1.
13-15

Shanghai,China

2019.5.
14

京都大学化
学研究所

invite Indo-Japan workshop"Frontiers in Molecular
Spectroscopy: From
Fundamentals to
Applications in Chemistry
and Biology
plenary 15th DAE-BRNS
Charge Carrier Dynamics inTrombay Symposium
Diketopyrrolopyrrole-linked Tetrabenzoporphyrinon Radiation &Films Studied by Time-resolved Terahertz
Photochemistry
Spectroscopy(TSRP-2020) 2020
invite One-Day Discussion
Two-dimensional IR spectroscopy on vibrational
Meeting on Dynamics
frequency fluctuations in aqueous solutionsof Chemical andBiological Systems
invite 11th Asian Conference
Hydrogen-bond Dynamics of 9-Fluorenone
on Ultrafast
Derivatives in Water Probed by 2D-IR
Phenomena
Spectroscopy
招待2019 年日本分光学会 テラヘルツ分光と固体密度汎関数法による分講演
年次講演会
子性結晶の低振動モード

2019.6.
13-14

福井大学

招待
講演

2019.9.
17−20

名古屋大学

招待
講演

2020.1.
22

神戸大学

招待
講演

2019.9.
3Singapore

invite2019.4.
16

神戸

依頼
講演

2019.9. University ofinvite10~12 the Philippines
Los Baños,
Philippine
2019.9. University of 学部生
10~12 the Philippines 向けセ
Los Baños,
ミナー
Philippine
2019.10 神戸
invite.30~11.
2

International
Conference on
Chemical andEnvironmental
Sciences (ICCAES
2019)
Ultrafast Sciences 2019

Terahertz Molecular Science in the Condensed
PhasesHydrogen-Bond Dynamics of 9-Fluorenone
Derivatives in Water Probed by 2D-IR
Spectroscopy
Temperature dependence of frequency fluctuationof solute in aqueous solution studied by
two-dimensional infrared spectroscopy

KBK 高出力遠赤テラヘルツ分子科学の進展について
外・分子物質科学研究会
分子科学討論会
超短パルスレーザー分光で見る水溶液中の動的な挙動（Hydrogen Bond Dynamics in Aqueous
Solutions）
神戸大学分子フォト
様々な水和されたソフトマターの広帯域誘電サイエンス研究セン
分光
ター研究会
Seminar (Nanyang
Terahertz Spectroscopy in Condensed Phases
Technology University)
開拓プロジェクト｢階層縦断的アプローチによる革新的光エネ
ルギー変換系の開拓｣、第１回シンポジ
ウム
DOST-JSPS
Collaborators’Meetingand Workshop

DOST-JSPS
Collaborators’Meetingand Workshop
Indo-Japan workshop"Frontiers in Molecular
Spectroscopy: From

42

テラヘルツ光で観る有機薄膜太陽電池の電荷キャリアダイナミクス

Charge Carrier Dynamics inDiketopyrrolopyrrole-Linked
Tetrabenzoporphyrin Based Bulk Heterojunction
Thin Films Probed by Time-Resolved Terahertz
Spectroscopy"
Introduction to Ultrafast Optical Spectroscopy

Propagation Characteristics and Wavefront
Shaping of Ultrashort Optical Pulses throughScattering Media張峰
F, Zhang佐藤春実
H. Sato
(人間発達
環境学研
究科)

2019.1.
12~15

Shanghai,
China

invite2019.10. 23

Hangzhou,Chinainvite2019.
12.25~
26
2019.10.17

Fuzhou,China

invite大阪大学，医 invite
学・工学研究科東京ブランチ

2019.9.2- Semarang,
invite4
Central Java,
Indnesia
2019.8.19 Jilin University invite-21
ChangChun,
China

太田仁
H. Ohta

Fundamentals to
Applications in
Chemistry and Biology
11th Asian Conference
on Ultrafast
Phenomena 2020
SPIE Photonics Asia
4th Young Scholars
Forum at Fuzhou
University
学振 182 委員会 第 3
期第 4 回研究会

Wavefront Shaping of Ultrashort Optical Pulses
through Scattering Media"
A General Rule of THz Mode Assignment for
Molecular Crystals
THz Spectroscopy in Molecular Crystalline
Systems
テラヘルツ分光を利用した高分子材料の物性評
価

Week Hydrogen Bonding of Polymers Studied by
7th International
Conference on DV-XαTerahertz and Low-frequency Raman
Method (ICDM)
Spectroscopy
The study of crystalline phase transition in10th International
Symposium on
PHB/PVPh blends using Far-IR, Raman, WAXD
Two-dimensionaland 2D correlation analysis
Correlation
Spectroscopy(2DCOS-10)
Week Hydrogen Bonding of Biodegradable
10th International
Conference on Advanced Polyester Studied by Terahertz Spectroscopy
Vibrational
Spectroscopy (ICAVS
10)
第 15 回 ESR 入門セミ 超入門
ナー2019.7.8- Auckland
12

invite2019.5.
10-12

八王子

invite2019.5.
10-12

八王子

invite

第 15 回 ESR 入門セミ
ナー

スペクトル解析 I(固体）2019.6.
13-14

福井

invite

第１回高出力遠赤外光・分子物質科学研究会（KBK 研究会）

多重極限テラヘルツ ESR の開発と応用

2019.6.
16-19

淡路島

inviteRecent Developments And Applications ofMulti-extreme THz ESR

2019.7.
8

札幌

invite6th Awaji International
Workshop on "Electron
Spin Science &Technology: Biologicaland Materials Science
Oriented Applications"(6th AWEST 2019)
新物質科学研究会

2019.8.
7-9

府中

invite

第 17 回 ESR 夏の学校

電子スピン共鳴（ESR)序論 Introductory to ESR
Spectroscopy

2019.8.
25-30

Berlin,Germany

invite21st ISMAR - 15th
EUROMARMulti-Extreme THz ESR -Recent Developments
and Future-43

多重極限 THz ESR の開発と応用 -SrCu2(BO3)2の圧力誘起相転移観測を例に-

大久保晋
S. Okubo

高橋英幸
H. Takahashi

大道英二
E. Ohmichi
（理学研究
科）

2019.9.
23-27

Kazan,
RussiainviteMagnetic Resonance-Current State andFuture Perspectives(EPR-75)
Magnetic Resonance-Current State andFuture Perspectives(EPR-75)
13th Japanese -Russian
WorkshopMulti-Extreme THz ESR -Recent Application andthe Future-

2019.9.
26

Kazan,
Russiaplenary

2019.11.10-13淡路島

invite2019.11.17-22

Kuching,
Malaysia

invite14th Asia-PacificPhysics Conference
2019 (APPC14)
数理２ボトムアップセミ
ナー

Observation of quantum phase transition in
Shastry-Sutherland Model Substance SrCu2(BO3)2
by high pressure THz ESR
多重極限 THz ESR の開発と応用

2020.1.
22

金沢

invite2019.7.
8

札幌

invite新物質科学研究会

Fe 四面体クラスター磁性体 oharmacosiderite の
強磁場 ESR 測定

2019.9.
23-27

Kazan,
RussiainviteHigh-field and High-frequency ESR studies ofComprising Tetrahedral Clusters Arranged in the
Cubic Lattice2019.11.7-9

川崎inviteMagnetic Resonance-Current State andFuture Perspectives(EPR-75)
第 58 回電子スピンサ
イエンス学会年会

ナノメンブランを用いたテラヘルツ領域における力検出電子スピン共鳴法の開発

2019.10.2-5

New Jersey,
USAinviteThe Future of
Topological Materials

High-sensitivity THz-ESR as a tool to probe andmanipulate antiferromagnetic magnon

2019.12.17福井

invite日本物理学会北陸支部特別講演会

小さいことはいいことだ —微小機械デバイスを用いた精密計測—

44

Way to the Multi-Extreme THz ESR (ZavoiskyAward 2019)

Multi-Extreme THz ESR in Kobe

Presentation at conferences (international and domestic)plenaryorinvite
oral

発表者氏名

開催時期

開催地

小堀康博
Y. Kobori2019.8.
17-8.21

SaintPetersburg,
Russia2019.9.
10-9.12名古屋大学

2019.9.
17-9.19名古屋大学

2019.7.
12

成田ラディソン oral
ホテル

立川貴士
T.
Tachikawa

笠原俊二

学会名

講演題目

Molecular geometries and motions
driving quintet multiexcitons via singlet
fissionsoral

16th International Symposiumon Spin and Magnetic Field
Effects in Chemistry and
Related Phenomena
2019 光化学討論会

oral

第 13 回分子科学討論会

2019.11. 宮崎大学・oral
21
330 記念交流会館
2019.6東広島
posterS. Kasahara

2019.5京都oral

2019.9名古屋oral

第 13 回分子科学討論会

2020.3神奈川oral

第 20 回分子分光研究会

University of
Auckland,
New Zealandposter

19th Time Resolved Vibrational
Spectroscopy Conference

2019.9.
17~20

名古屋

oral

太田仁
H. Ohta

2019.7.
21-25

Denver,USA

oral

2019.9.1- Bratislava,
5
Slovakia

poster2019.12.3-5

豊中

poster2019.8.
25-30

Berlin,Germany

posterHigh-Resolution Laser Spectroscopy of
A-X Transition of Nitrogen Dioxide

74th International Symposium on High-Resolution Laser Spectroscopy ofMolecular Spectroscopy
S1-S0 Transition of Fluorene andCarbazole
令和元年度日本分光学会年次 NO2 および NO3 ラジカル高分解能レーザ
講演会
ー分光

oral

太田薫
K. Ohta大久保晋
S. Okubo

35th Symposium on Chemical
Kinetics and Dynamics

Illinois,USA2019.9.
K. Tominaga 8-13分子内一重項励起子分裂による五重項多重励起子 生成:分子運動効果の解
析
一重項励起子分裂後の五重項多重励起子生成に対する分子運動効果

2nd International Symposium on Single-Particle PhotoluminescenceSoft Crystals
Imaging of Organolead Mixed-Halide
Perovskites
第 38 回 固体・表面光化学討論 ヘマタイトメソ結晶光電極の開発
会

2019.6

富永圭介

一般講演

高分解能レーザー分光によるフルオレン
およびカルバゾールの S1-S0 遷移に関する研究
NO2 ラジカルの 610-630 nm 領域の高分解能レーザー分光

Temperature dependence of frequency
fluctuation of solute in aqueous solution
studied by two-dimensional infrared
spectroscopy
分子科学討論会
高感度時間分解テラヘルツ分光法の開発と電荷キャリアダイナミクス計測への応用
Rocky Mountain Conference on Multi-Extreme THz ESR: Developments
Magnetic Resonanceon High-Pressure ESR and Mechanically
Detected ESR
Xith Conference of European
Multi-Extreme THz ESR -Current Status
Federation of EPR Groups
and Future(EFEPR)
第 15 回強磁場フォーラム総会 神戸大学における強磁場を用いた多重極限 THz ESR
21st ISMAR - 15th EUROMAR45

THz ESR study of S=1/2 frustrated J1-J2
chain NaCuMoO4(OH) as candidate
substance for spin nematic

2019.9.
10-13

高橋英幸

岐阜

oral

日本物理学会 2019 年 秋季大会

2019.11.1 福井
4oral

第 28 回（2019 年度）日本赤外 Fe クラスター反強磁性体のテラヘルツ
線学会研究発表会
ESR による研究

2019.12. 豊中
3-5

poster

第 15 回強磁場フォーラム総会 Fe 四面体クラスター反強磁性体の強磁場 ESR 測定2019.9.

札幌

oral

Paris,
Franceoral

応用物理学会秋季学術講演会 SiNx ナノメンブレンを用いた力検出型高周波電子スピン共鳴分光法の濃度感度の評価
th44 International Conference on Terahertz Electron Paramagnetic
Infrared, Millimeter, andResonance Spectroscopy using An
Terahertz Waves
Ultrathin Membrane Device(IRMMW-THz 2019)
日本物理学会 2019 年 秋季 パルス強磁場を用いた圧力下 ESR 装置
大会
の開発

18-21
大道英二
(理学研究
科）

2019.9.
1-6

櫻井敬博
2019.9. 岐阜(研究基盤 10-13
センター）
2019.11.1 福井
4oral

第 28 回（2019 年度）日本赤外 25T 無冷媒型超伝導磁石を用いた高圧線学会研究発表会
力下 THz ESR 装置の開発と応用

oral

第 15 回強磁場フォーラム総会 高圧下強磁場 THz ESR の現状と今後の展望

岐阜

poster日本物理学会 2019 年 秋季 NiSeO3 単結晶の育成と磁化測定
大会

Denver,USA

poster

Berlin,Germany

posterRocky Mountain Conference on A THz ESR Study under High-Pressure
Magnetic Resonanceusing Hexaaqua Complex Salt Containing
High-Spin Metal Ion
21st ISMAR - 15th EUROMAR A High-Field ESR Study using Hexaaqua
Complex Salt Containing High-Spin
Metal Ion: The Evaluation about a
Potential of Tutton's Salt as a PressureStandard for High-Pressure ESR
Measurement
第 58 回電子スピンサイエンス学ペロブスカイト化合物 YTiO3 の X-バンド
ESR 測定：Ti-3d1 起動とその方向依存性会年会

2019.12. 豊中
3-5
原茂生
2019.9.
(研究基盤 10-13
センター）
齋藤佑
2019.7.
(研究基盤 21-25
センター）
2019.8.
25-30

poster

幾何学的スピン構造を持つ反強磁性体の強磁場 ESR による研究 IV

2019.11. 川崎
7-9

oral

46

Presentation by Graduate Students and Postdocs

院生、ポストドクの学会発表

指導教員

発表者氏名

学年

時期

小堀康博
Y. Kobori

尾山真也

M2

松田紗季

M2

濱田守彦

PD

2019.8.17- 16th International
8.21
Symposium on Spin andMagnetic Field Effects in
Chemistry and Related
Phenomena
2019.8.17- 16th International
8.21
Symposium on Spin andMagnetic Field Effects in
Chemistry and Related
Phenomena
2019.9.10- 2019 年光化学討論会
9.12

二色時間分解 EPR 測定法を用いた有機太陽電池における電荷分離状態の観測

尾崎恭佑

M1

2019.9.10- 2019 年光化学討論会
9.12

植物 PSII の初期光電荷分離による立体配置と電荷再結合に対する温度効果

長嶋宏樹

PD

偏光励起による五重項状態の効率的形成に
関する研究

尾崎恭佑

M1

岡村芽衣水

B4

松田紗季

M1

長友敬晃

B4

尾山真也

M2

張主軍

D3

2019.11.7- 第 58 回電子スピンサイ
9
エンス学会年会（SEST2019）2019.11.7- 第 58 回電子スピンサイ
9
エンス学会年会（SEST2019）2019.11.7- 第 58 回電子スピンサイ
9
エンス学会年会（SEST2019）2019.11.7- 第 58 回電子スピンサイ
9
エンス学会年会（SEST2019）2019.11.7- 第 58 回電子スピンサイ
9
エンス学会年会（SEST2019）2019.11.7- 第 58 回電子スピンサイ
9
エンス学会年会（SEST2019）2019.9.
2019 年光化学討論会
10

櫻井学

D2

2019.9.
10

2019 年光化学討論会

渡瀬達也

M2

2019.9.
10

2019 年光化学討論会

Single-Particle Emission Observation of
Ruthenium Dye-Adsorbed Mesoporous Silica

狩俣出

D3

2019.9.
122019 年光化学討論会

イオンダイナミクスが誘起する有機鉛ペロブスカ
イトの単一粒子発光スイッチング

山下真帆

M1

2019.9.
122019 年光化学討論会

メソポーラスシリカ担持ルテニウム錯体の単一粒子発光観測：細孔内拡散と光触媒活性の関係

坂本萌里

M1

2019.9.
122019 年光化学討論会

メカノクロミック発光性色素における刺激応答構
造変化の蛍光顕微鏡観測

狩俣出

D3

2019.4.
16神戸大学 先端融合研究 有機鉛ハロゲン化物ペロブスカイトのイオン・キ
環 開拓プロジェクト「階層 ャリアダイナミクス
縦断的アプローチによる革新的光エネルギー変換系の開拓」第１回シンポジウ
ム

立川貴士
T. Tachikawa

学会名

講演題目

47

Photoinduced charge recombination in
P3HT:PC70BM blend film studied by TR-EPR

Mechanism of multiple multiexciton formationand triplet dissociation by singlet fission in thinfilms

植物 PSII の初期光電荷分離による立体配置と電荷再結合に対する温度効果
非フラーレンアクセプターを用いたブレンド膜の時間分解 EPR
時間分解 EPR 法による一重項励起子分裂により生成した多重励起子解離機構の解明
TIP ペンタセン薄膜の一重項分裂による室温での時間分解 EPR
時間分解 EPR 法を用いた P3HT:PC70BM ブ
レンド膜における光誘起電荷ダイナミクスの解明
Hematite mesocrystals with abundant interfacial
oxygen vacancies for efficient solar water
splittingFluorescence imaging of magnetic field effects
on organic long persistent luminescence

笠原俊二

狩俣出

D3

張主軍

D3

櫻井学

D2

渡瀬達也

M2

山下真帆

M1

坂本萌里

M1

中島康輔

B4

2019.11.6 KAITAKU Project“Development ofinnovative light energy
conversion systems byhierarchical approach”
International Workshop on
Frontier of Science andTechnology for Solar
Energy Conversion
2019.11.6 KAITAKU Project“Development ofinnovative light energy
conversion systems byhierarchical approach”
International Workshop on
Frontier of Science andTechnology for Solar
Energy Conversion
2019.11.6 KAITAKU Project“Development ofinnovative light energy
conversion systems byhierarchical approach”
International Workshop on
Frontier of Science andTechnology for Solar
Energy Conversion
2019.11.6 KAITAKU Project“Development ofinnovative light energy
conversion systems byhierarchical approach”
International Workshop on
Frontier of Science andTechnology for Solar
Energy Conversion
2019.11.6 KAITAKU Project“Development ofinnovative light energy
conversion systems byhierarchical approach”
International Workshop
onFrontier of Science andTechnology for Solar
Energy Conversion
2019.11.6 KAITAKU Project“Development ofinnovative light energy
conversion systems byhierarchical approach”
International Workshop on
Frontier of Science andTechnology for Solar
Energy Conversion
2020.3
第 20 回分子分光研究会

清水陽

B4

2020.3

S. Kasahara

第 20 回分子分光研究会

48

Ion and charge dynamics in lead halide
perovskites

Hematite mesocrystals with abundant interfacial
oxygen vacancies for efficient solar hydrogenproduction

Magnetic field effects on organic long persistentluminescence

Single-particle emission observation of ruthnium
dye-modified mesoporous silica

Fluorescence imaging of stimulus inducedchanges of mechanochromic dyes

Photo-induced emission switching of mixed
halide organic-inorganic perovskites

アセトアルデヒドの S1-S0 遷移の高分解能レーザ
ー分光
アセトアルデヒドおよびアセトンの S1-S0 遷移の高分解能レーザー分光

44th International
Conference on Infrared,
Millimeter and Terahertz
Waves
44th International
Conference on Infrared,
Millimeter and Terahertz
Waves
34th Philippine Chemistry
Congress

Towards a General Rule Guiding THz Mode
Assignment in Molecular Crystals

2019.5.
29~6.137th SPP Physics Congress

Temperature-induced transition in DBSA-doped
polyaniline composite at the terahertz range

D12019.6.
14~16

Lou Serafin
M. Lozada

D1

2019.9.
10~12

2nd Japan – Philippines
Terahertz ResearchWorkshop
DOST-JSPS Collaborators’Meeting and Workshop

Conductivity and carrier density of polyaniline
containing polymer-clay composite studied byterahertz time-domain spectroscopy
Dielectric Relaxation and Terahertz TimeDomain Spectroscopy

藤井悠生

M1

2019.9.
17〜20

分子科学討論会

二次元赤外分光法による水溶液中における溶質の振動数揺らぎの温度依存性

藤井悠生

M1

2019.10.
26

第 10 回サイエンスフロ
ンティア研究発表会

藤井悠生

M1

2019.12.
19~20

スーパーコンピュータワ
ークショップ 2019

溶液中における動的挙動で観測される活性化エネルギー−水溶液中における振動数揺らぎの温度依
存性について−二次元赤外分光法による水溶液中における溶質の振動数揺らぎの温度依存性

西前篤志

M1

2019.12.
19

若手フロンティア研究会
2019

1. THz 分光法による高分子共重合体の高次構
造の研究

岡崎なつ実

M2

2019.12.
19

若手フロンティア研究会
2019

テラヘルツ分光法を用いたポリジオキサノンの結晶相転移に関する研究

山元優美子

M2

2019.12.
19

若手フロンティア研究会
2019

テラヘルツ分光法によるエンジニアリングポリエ
ステルのメチレン鎖の長さによる結晶化の研究

那須達郎

M1

2019.12.
19

若手フロンティア研究会
2019

低波数ラマン分光法を用いた高吸水性樹脂の水との相互作用三輪泰大

M2

2019.12.
19

若手フロンティア研究会
2019

第四級オニウム塩ハイドレートにおける低波数
ラマン分光分析三輪泰大

M2

2019.11.
21-22

第 10 回イオン液体討論会

嶋田仁

M1

2019.11.
21-22

第 10 回イオン液体討論会

低波数 Raman 分光法による TBA/TBP ハイドレートにおけるゲスト分子相互作用が与える影響の評価
トリブチルアルキルホスホニウムカチオンを内包
したセミクラスレートハイドレートの物理化学特性

岡崎なつ実

M2

2019.9.
25-27

第 68 回高分子学会討論
会

山元優美子

M2

2019.9.
25-27

第 68 回高分子学会討論会

富永圭介
Feng Zhang
K. TominagaPD2019.9.1~6Feng Zhang

PD

2019.9.1~6

Lou Serafin
M. Lozada

D1

2019.5.
28~30

Lou Serafin
M. Lozada

D1

Lou Serafin
M. Lozada佐藤春実
H. Sato49

Density of State of Low-frequency
Intramolecular Vibrations for Stiff and Flexible
Molecules at Solid Phase
Temperature-dependent broadband dielectric
response of hydrated casein

低波数 Raman 分光法による TBA/TBP ハイドレートにおけるゲスト分子相互作用が与える影響の評価,
テラヘルツ分光法、低波数ラマン分光法、量子化学計算による PET および PBT の高次構造解
析

能智真央

M1

2019.9.
25-27

西前篤志

M1

2019.9.
25-27

山元優美子

M2

Dian Marlina

D3

三輪泰大

M2

那須達郎

M1

松本優奈

M1

能智真央

第 68 回高分子学会討論会

赤外分光法及びテラヘルツラマン分光法による
ε ポリ(L)リジンの高次構造の研究

第 68 回高分子学会討論 テラヘルツおよび低波数ラマン分光法を用いた会
ポリ（グリコリド-co-ラクチド）共重合体の高次構造の研究
2019.11.21 第 28 回ポリマー材料フォ テラヘルツ波を利用した PET と PBT の分子間相-22ーラム互作用の直接観察2019.9.2-4 7th International
Conference on DV-Xα
Method (ICDM)
2019.8.7-8 第 28 回日本エネルギー学会

Study on The Higher-Order Structure andHydrogen Bonding of Biodegradable Polymer by
Low-Frequency Vibrational Spectroscopy
TBA/TBP bromide ハイドレートのゲスト分子相
互作用の差異2019.8.1-2

低波数ラマン分光法による高吸水性ポリマーの水との相互作用M1

第 13 回近畿支部夏季セ
ミナー ～ぶんせき秘帖
巻ノ拾参
2019.8.1-2 第 13 回近畿支部夏季セ
ミナー ～ぶんせき秘帖
巻ノ拾参
2019.7.12 高分子学会関西支部

Dian Marlina

D3

2019.7.12 高分子学会関西支部

松本優奈

M1

2019.7.12 高分子学会関西支部

The investigation of Higher-Order Structure on
Polymer Blend Poly(3-hydroxybutyrate)/Poly（4-vinylphenol）by Terahertz and
Low-Frequency Raman Spectroscopy
振動分光法によるポリヒドロキシブタン酸共重合体の結晶化速度の分子量依存性に関する研究

岡崎なつ実

M2

西前篤志

M1

那須達郎

M1

山元優美子

M2

Dian Marlina

D3

松本優奈

M1

10th International
A Study on Correlation between IntermolecularConference on Advanced
Interaction and UV Degradation ofVibrational Spectroscopy
Polydioxanone by Terahertz Spectroscopy(ICAVS 10)
2019.7.8- 10th International
Study of higher order structure of
12
Conference on Advancedpoly(glycolide-co-lactide) by THz and low
Vibrational Spectroscopy
frequency Raman spectroscopy(ICAVS 10)
2019.7.8- 10th International
Studey on hydration of super absorbent polymer
12
Conference on Advanced
by lowfrequency Raman spectroscopy
Vibrational Spectroscopy(ICAVS 10)
2019.7.8- 10th International
A study of hydrogen bondings of PET and PBT
12Conference on Advancedby terahertz spectroscopy and quantum chemical
Vibrational Spectroscopy
calculations(ICAVS 10)
2019.5.29- 第 68 回高分子学会年次大 The investigation of Higher-Order Structure on
31
会
Polymer Blend
Poly(3-hydroxybutyrate)/Poly(4-vinylphenol) by
Terahertz and Low-Frequency Raman
Spectroscopy
2019.5.29- 第 68 回高分子学会年次大 振動分光法によるポリヒドロキシブタン酸共重合
31
会体の分子量依存性に関する研究
2019.7.81250

振動分光法による分子量の異なるポリヒドロキシブタン酸共重合体の結晶化挙動
テラヘルツ領域における ε ポリ(L)リジンの高次構造に関する研究太田仁
H. Ohta

能智真央

M1

2019.5.29- 第 68 回高分子学会年次大 テラヘルツ及びテラヘルツラマン分光法を用い31
会
た ε ポリ(L)リジンの高次構造の研究

西前篤志

M1

2019.5.29- 第 68 回高分子学会年次大 ポリ（グリコリド-co-ラクチド）共重合体のテラヘル
31
会
ツ分光法による高次構造の研究

那須達郎

M1

2019.5.29- 第 68 回高分子学会年次大 低波数ラマン分光法を用いた高吸水性樹脂の31
会
水和に関する研究

山元優美子

M2

藤岡廉

M1

藤岡廉

M1

2019.5.29 第 68 回高分子学会年次大 テラヘルツ分光法および低波数ラマン分光法に-31
会よるポリエチレンテレフタレート及びポリブチレン
テレフタレートの分子間相互作用と高次構造の研究
2019.9.
44th International
Terahertz field enhancement by bull's eye
1-6
Conference on Infrared,
antenna for force-detected electron paramagnetic
Millimeter, and Terahertz
resonance measurements
Waves (IRMMW-THz
2019)2019.9.
応用物理学会秋季学術講 力検出型電子スピン共鳴測定のためのテラヘ
18-21
演会
ルツ帯 bull's eye アンテナの作製

大島健太郎

M2

2019.9.
10-13

日本物理学会 2019 年
秋季大会

ペロブスカイト型化合物 PbMnO3 の高周波 ESR
測定 II

奥藤涼介

M2

2019.9.
10-13

日本物理学会 2019 年
秋季大会

圧力下における三角格子反強磁性体 CsCuCl3の相互作用パラメータの評価 II

安谷佳将

M1

2019.9.
10-13

日本物理学会 2019 年
秋季大会

圧力下強磁場 ESR 装置における圧力較正手法
の開発

八谷大輝

M1

2019.9.
10-13

日本物理学会 2019 年
秋季大会

高強度ミリ波光源ジャイロトロンを用いた力検出型 ESR 測定鈴木哲平

M2

2019.9.
10-13

日本物理学会 2019 年
秋季大会

CsFeCl3 の圧力誘起磁気相の ESR による研究

船越風太

M1

2019.9.
10-13

日本物理学会 2019 年
秋季大会

ダイマー系化合物 CoSeO3･2H2O の高周波 ESR
測定

恒石一義

M1

2019.9.
10-13

日本物理学会 2019 年
秋季大会

S=1/2 反強磁性鎖 KCuMoO4(OH)の単結晶
ESR 測定恒石一義

M1

2019.11.
14

第 28 回（2019 年度）日本
赤外線学会研究発表会

S=1/2 反強磁性鎖 KCuMoO4(OH)の単結晶高周波 ESR 測定藤岡廉

M1

2019.11.
14

第 28 回（2019 年度）日本
赤外線学会研究発表会

力検出型電子スピン共鳴測定の感度向上に向けたテラヘルツ帯 bull's eye アンテナの作製

港啓介

M2

2019.11.
14

第 28 回（2019 年度）日本
赤外線学会研究発表会

光伝導アンテナを用いた連続周波数可変テラ
ヘルツ ESR 測定法の開発

奥藤涼介

M2

2019.11.
14

第 28 回（2019 年度）日本
赤外線学会研究発表会

圧力下 THz ESR を用いた三角格子反強磁性体の新奇磁性相の研究

51

船越風太

M1

2019.12.
3-5

第 15 回強磁場フォーラム
総会

スピンダイマー系化合物 CoSeO3・2H2O の強磁場 ESR 測定奥藤涼介

M2

2019.12.
3-5

第 15 回強磁場フォーラム
総会

CsCuCl3 が圧力下強磁場中で示す新奇磁気相の起源の研究鈴木哲平

M2

2019.12.
3-5

第 15 回強磁場フォーラム
総会

圧力誘起磁気相 CsFeCl3 の強磁場 ESR による
研究

恒石一義

M1

2019.12.
3-5

第 15 回強磁場フォーラム
総会

大島健太郎

M2

2019.12.
3-5

第 15 回強磁場フォーラム総会

交替 D ベクトルを持つ S=1/2 反強磁性鎖物質
KCuMoO4(OH)の微小単結晶を用いた強磁場
ESR による磁気異方性の観測
ペロブスカイト化合物 PbMO3(M=Mn.Cr.V)の強
磁場測定

安谷佳将

M1

2019.12.
3-5

第 15 回強磁場フォーラム
総会

圧力下強磁場 ESR 装置における圧力較正手法
の開発

港啓介

M2

2019.12.
3-5

第 15 回強磁場フォーラム
総会

光伝導アンテナを用いた連続周波数可変テラ
ヘルツ

藤岡廉

M1

2019.12.
3-5

第 15 回強磁場フォーラム
総会

DmytroKamenskyi

招聘
外国
人研
究者

2019.12.
14

第 30 回神戸大学物性実
験研究室セミナー

メンブレン検出電子スピン共鳴測定の感度増強に向けた テラヘルツ帯 bull's eye アンテナの作製
High-field EPR facilities in Europe

鈴木哲平

M2

2019.12.
19

若手フロンティア研究会
2019

スピンフラストレーション系の磁性測定

藤岡廉

M1

2019.12.
19

若手フロンティア研究会
2019

幾何学構造を用いたテラヘルツ帯光学素子の
試作

大島健太郎

M2

2019.12.
19

若手フロンティア研究会
2019

鉛型ペロブスカイト化合物の ESR 測定

八谷大輝

M1

2019.12.
19

若手フロンティア研究会
2019

キラルスピン系 CuB2O4 の力検出型電子スピン
共鳴測定

奥藤涼介

M2

2019.12.
19

若手フロンティア研究会
2019

圧力下で見出された新奇磁性相の起源の探求

安谷佳将

M1

2019.12.
19

若手フロンティア研究会
2019

圧力下強磁場 ESR 装置における圧力較正手法の確立と応用

港啓介

M2

2019.12.
19

若手フロンティア研究会
2019

光伝導アンテナによる連続周波数可変テラヘル
ツ電子スピン共鳴法の開発

船越風太

M1

2019.12.
19

若手フロンティア研究会
2019

スピンダイマー系化合物 CoSeO3・2H2O の高周
波 ESR 測定恒石一義

M1

2019.12.
19

若手フロンティア研究会
2019

S=1/2 反強磁性鎖 KCuMoO4(OH)の単結晶
ESR 測定

52

松本蓮

M2

2019.12.
19

河本敏郎
釋佳佑
T. Kohmoto

M22019.11.11 International Symposium on-14
Plasmonics and Nanophotonicsand Nano
Materials
2019.12. 第 30 回光物性研究会
13-14

反強磁性体 Cr2O3 における高速格子ダイナミクス

若手フロンティア研究会
2019

力検出を用いた周波数掃引型電子スピン共鳴法の開発
Spatial and temporal dynamics of thermal
diffusion in clathrate compounds

谷口弘樹

M1

釋佳佑

M2

2019.12.
13-14

第 30 回光物性研究会

クラスレート化合物における格子拡散ダイ
ナミクスの空間的時間的直接測定

藤本恵輔

M2

2019.12.
13-14

第 30 回光物性研究会

YIG における電場誘起磁化

爰川優太

M2

2019.12.
13-14

第 30 回光物性研究会

遷移金属酸化物反強磁性体におけるテラヘ
ルツ時間領域分光釋佳祐M22019.12.
19

若手フロンティア研究会
2019

クラスレート化合物における格子拡散ダイ
ナミクスの空間的時間的直接測定

爰川優太

M2

2019.12.
19

若手フロンティア研究会
2019

遷移金属酸化物反強磁性体におけるテラヘ
ルツ時間領域分光藤本恵輔

M2

2019.12.
19

若手フロンティア研究会
2019

YIG における電場誘起磁化

谷口弘樹

M2

2019.12.
19

若手フロンティア研究会
2019

反強磁性体 Cr2O3 における高速格子ダイナミ
クス

釋佳祐

M2

2020.3.16- 日本物理学会第 75 回年次 クラスレート化合物における格子拡散ダイ
19
大会
ナミクスの空間的時間的直接測定

藤本恵輔

M2

2020.3.16- 日本物理学会第 75 回年次 YIG における電場誘起磁化
19
大会

岩崎祐典

M1

2020.3.16- 日本物理学会第 75 回年次 遷移金属酸化物反強磁性体におけるテラヘ
19
大会
ルツ時間領域分光前田悠貴

M1

2020.3.16- 日本物理学会第 75 回年次 反強磁性体 Cr2O3 における高速格子ダイナミ
19
大会
クス

53

Books

著書著者（共著者も含む）

書名

出版社名

ページ数

発行年

Masaki Okuda, Masahiro
Higashi, Kaoru Ohta, Shinji
Saito and K. Tominaga“Vibrational Frequency Fluctuations ofIonic and Non-ionic Vibrational Probe
Molecules in Aqueous Solutions” inCoherent Multidimensional
Spectroscopy edited by M. Cho

Springer259-285

2019

54

Other Publications

参考論文・記事・報告

著者

タイトル

出版物名

小堀康博

レビュー 電子スピン分極の 光化学協会誌「光化学」
空間映像化による光エネルギー変換機構の解明：不均一太陽電池薄膜への挑戦
解説 光エネルギー変換にお 月刊「化学」
ける軌道・分子運動の役割−電子スピン分極立体映像化による中間体構造解析
Density of State of
abstract bookLow-frequency Intramolecular
IRMMW-THz 2019
Vibrations for Stiff andFlexible Molecules at Solid
Phase
Towards a General Ruleabstract bookGuiding THz Mode Assignment IRMMW-THz 2019
in Molecular Crystals

巻・号・ページ 発行年50(3) 177-184

2019

75(3) 47-51

2020

Mo-Po1-4

2019

Th-PM2-2-52019

光物性研究会論文集

30 巻・
49-52

2019

藤本恵輔，虫明侑一郎， YIG における電場誘起磁化
河本敏郎

光物性研究会論文集

30 巻・
145-1482019

爰川優太，岩崎祐典，
喜多将之，川本憲生，
立松雅大，守安毅，河本敏郎
釋佳佑，大石禎希，河本敏郎，岡村英一，末國晃一郎，鬼丸孝博，
高畠敏郎
守安毅，河本敏郎

遷移金属酸化物反強磁性体におけるテラヘルツ時間領域分光

光物性研究会論文集

30 巻・
189-1922019

クラスレート化合物における格子拡散ダイナミクスの
空間的時間的直接測定

光物性研究会論文集

30 巻・
293-2962019

テラヘルツ時間領域分光法を用いた磁性体における磁気素励起の観測分光研究

69 巻・1 号・
in press

2020

小堀康博

Feng Zhang,
Houng-Wei Wang,
Keisuke Tominaga,
Michitoshi Hayashi,
Tetsuo Sasaki
Feng Zhang,
Houng-Wei Wang,
Keisuke Tominaga,
Michitoshi Hayashi,
Tetsuo Sasaki
谷口弘樹，前田悠貴， 反強磁性体 Cr2O3 における高川畑将馬，河本敏郎
速格子ダイナミクス

55Lecture to Public
氏名

講演、模擬授業など
集会名

小堀康博

講演題目
光と磁石の力で世界を変える- 太陽光エネルギー変換の仕組み –笠原俊二

光を利用して分子を知る

笠原俊二

光を利用して分子を知る

笠原俊二

温室効果ガスってなーに？

富永圭介

Molecular Vibration, Infrared
Spectroscopy and its Application

理学部模擬授業（仁川学院高等学校）
理学部模擬授業（富山県立魚津高等学校）
第 14 回女子中高生のための関西科学塾
学部生向けセミナー佐藤春実

Phase separation and crystallization
behavior of PHB/PLLA blends by
ATR-FTIR Imaging

河本敏郎

光と色の科学

河本敏郎

河本敏郎

出前授業

日時
2019.11.25

場所
兵庫県立相生高校

2019.7.18

神戸大学

2019.7.30

神戸大学

2019.10.27

神戸大学

2019.11.12

Recent advances inspectroscopic
imaging and related
modern techniques 3
出前授業

2019.5.13

Sirindhorn International
Institute of Technology,
Thailand東工大

2019.6.27

西宮東高校

光と色の科学

理学部模擬授業(柏原高校)

2019.7.26

神戸大学

光と色の科学

理学部模擬授業(星陵高校)

2019.10.25

神戸大学

56

Awards受賞

氏名

受賞研究題目賞名団体、学会名小堀康博

電子スピン分極イメージング法の開発による
光エネルギー変換機構の解明

第 33 回光化学協会
賞

光化学協会

小堀康博

電子スピン分極イメージング法による光エネルギー変換機構の解明

第 4 回分子科学国際 分子科学会
学術賞

張主軍

Hematite Mesocrystals with AbundantInterfacial Oxygen Vacancies for Efficient
Solar Water Splitting

2019 年光化学討論 光化学協会会優秀学生発表賞（口頭発表部門）
学長表彰（財務貢献） 神戸大学

立川貴士

山元優美
子

テラヘルツ分光法および低波数ラマン分光 優秀ポスター賞
法によるポリエチレンテレフタレート及びポリブチレンテレフタレートの分子間相互作用と高次構造の研究
低波数ラマン分光法による高吸水性ポリマ 優秀ポスター賞
ーの水との相互作用

高分子学会, 第 68 回高分子学会年次
大会

那須達郎

低波数ラマン分光法を用いた高吸水性樹脂 優秀賞に閉じ込められた水の構造神戸大学 研究基盤センター 若手フロ
ンティア研究会

太田仁

Way to the Multi-Extreme THz ESR

Zavoisky Physical Technical Institute髙橋英幸ナノメンブランを用いたテラヘルツ領域に SEST 奨励賞
おける力検出電子スピン共鳴法の開発

那須達郎

Zavoisky Award

日本分析化学会, 第１３回近畿支部夏季セミナー ぶんせき秘帖 巻ノ拾参

電子スピンサイエンス学会

髙橋英幸

令和元年度優秀若手 神戸大学
研究者賞・理事賞

髙橋英幸

学長表彰（財務貢献） 神戸大学

奥藤涼介

CsCuCl3 が圧力下強磁場中で示す新奇磁気相の起源の研究優秀ポスター賞

強磁場フォーラム

安谷佳将

圧力下強磁場 ESR 装置における圧力較正手 優秀ポスター賞
法の確立

強磁場フォーラム

57

Conference Organization
氏名

学術集会

立川貴士

先端融合研究環 開拓
プロジェクト「階層縦断的アプローチによる革新的光エネルギー変換系の開拓」
研究会「光エネルギー
変換系における最近の進展 -新規機能分子系の開発と先端的分光計
測、理論計算科学の融合を目指して-」テラヘルツ分子科学研究会「高分解能分光の最近の進展と今後の展
望」

立川貴士

笠原俊二、富永圭介

学術集会の開催
共同主催者

Indo-Japan Joint
Prof. Amalendu
Workshop on “Frontiers
Chandra (Indianin Molecular
Institute of Technology,
Kanpur)Spectroscopy: From
Fundamentals to
Applications in
Chemistry and Biology”
太田仁、大久保 分子フォト共同利用・
晋
共同研究 研究会 「スピン系研究の開拓前線-理論的挑戦と新物質開拓-」太田仁、大久保 第 30 回神戸大学物性実 神戸大学分子フォト晋験研究セミナーサイエンス研究セン
ター

瀧川記念学術交流会館大会議室

2019.4.16

参加者
概数
約 40 名約 40 名理学部講義棟

2019.10.21

約 20 名神戸大学理学部

2019.10.29-1
1.1

約 40 名理学部講義棟

2019.11.26

約 30 名滝 川 記 念 学 術 2019.12.14
交流会館

60 名

第 14 回量子スピン系研 神戸大学分子フォトサ あ き た 芸 術 村 2020.1.8-9
究会
イエンス研究センター 温泉ゆぽぽ

24 名

富永圭介（協力、 11th Asian Conference on
日本側代表）
Ultrafast Phenomena

富永圭介

時期

神戸大学自然
2019.8.1
科学研究棟 1 号
館

富永圭介（日本
側代表）

太田仁、大久保晋

場所

Zhenrong Sun, East
China Normal
University, Qihuang
Gong, Peking
University, China

分子フォト研究会「誘電応答から見るソフト
マターの水和ダイナミクス」

58

East China
NormalUniversity,
Shanghai, China

2020. 1.12
〜1.15

約 60 名理学部講義棟

2020.01.22

約 25 名Seminars

セミナー

Date
5.21.2019

Name
嘉部量太

Affiliation
九州大学 OPERA

Title
有機蓄光システムの開発

10.16.2019

Vladislav Kataev

10.29.2019

田中秀数

Leibniz Institute for Solid
State and Materials Research
IFW Dresden, Germany
東京工業大学理学院

Probing spin-correlated quantum matterwith electron spin resonancespectroscopy
スピン 1/2 三角格子及び籠目格子反強磁性体の磁気励起59

Molecular Photoscience Research Center
Kobe University,
Nada, Kobe 657-8501 Japan
Tel: +81-78-803-5761
URL: http://www.research.kobe-u.ac.jp/mprc/about/index_e.html (English)〒657-8501
神戸市灘区六甲台町 1－1
神戸大学分子フォトサイエンス研究センター
電話番号 078-803-5761
http://www.research.kobe-u.ac.jp/mprc/index.html （日本語）60