COMPENDEX (Ei Compendex)
Subject
Coverage

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File Type

Bibliographic

Features

Thesaurus

Controlled Term (/CT), Controlled Term in German (/CTDE)

Alerts (SDIs)

WeeklyCAS Registry
Number® IdentifiersKeep & Share

Civil and railroad engineering
Environmental and agricultural engineering
Geological and marine engineering
Mining and metallurgy
Chemical, petroleum, and fuel engineering
Bioengineering
Electrical engineering and electronics
Mechanical, automotive, and industrial engineering
Control devices and principles, instruments and measurement
Nuclear technology
Aerospace engineering
Heat and thermodynamics
Computers and data processing, communication engineering
Sounds and acoustical technology
Optics and optical devices

Learning Database

SLART
Structures

RecordContent• Bibliographic information, abstracts, and indexing

File Size• More than 26.5 million records (09/2023)

Coverage

1970-present

Updates

WeeklyLanguage

English

Database
Producer

Elsevier (Engineering Information)
360 Park Avenue SouthNew York, NY 10010 USA
Phone: 212-633-3895
Fax:
212-633-3680
Email: eicustomersupport@elsevier.com
Copyright Holder

September 2023

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COMPENDEX

Sources•••••

User Aids• Online Helps (HELP DIRECTORY lists all help messages available)• Ei Thesaurus – Classification Code
• STNGUIDE

Cluster• AEROTECH• ALLBIB• AUTHORS• CHEMENG• CHEMISTRY• COMPUTER• CONSTRUCTION• CORPSOURCE• ELECTRICAL• ENGINEERING• ENVIRONMENT• FUELS• GEOSCIENCE• GOVREGS• MATERIALS• MEETINGS• METALS• NPS• PETRLOEUM• POLYMERSSTN Database Cluster information:
https://www.cas.org/support/training/stn/database-clusters

September 2023

Journals
Books
Reports
Conference contributions
Other non-conventional literature

3
COMPENDEX

Search and Display Field Codes
Fields that allow left truncation are indicated by an asterisk (*).

General Search Fields
Search Field Name

SearchCode

Display
Codes

Search Examples

Basic Index* (contains single
words from title (TI), abstract(AB), classification code (text)(CC), controlled term (CT), andsupplementary term (ST) fields)

None
or
/BI

S TURBOSHAFT ENGINE#S DIGITAL(2W)CONTROLS JET TURBINE#
S FEEDBACK/BI,CT
S ?LASER?

AB, CC, CT,
ST, TI

Abstract*
Accession Number
Author (editor)

/AB
/AN
/AU

AB
AN
AU

Author Identifier (ORCID)Classification Code)(code and text) (1)Controlled Term (4)

/AUID
/CC

Controlled Term in German (2)/CTDE

Controlled Word
Country of Publication(ISO code and text)
Corporate Source(author affiliations, and e-mailaddresses) (1)Digital Object Identifier
Document Type(STN code and text)
E-mail Address (1)Entry Date (3)Field Availability
International Standard(Document) Number(CODEN, ISBN, and ISSN)
Journal Title (contains full andabbreviated journal titles)
Language (ISO code and text)
Meeting Date (3)Meeting Location
Meeting Number
Meeting Organizer (1)Meeting Title

/CW
/CY

S ?SYMMETRI?/AB
S 2008-4911759913/AN
S CHENEY PAUL H/AU
S CHENEY, PAUL H/AUS HERMAN,?/AU
S 0000-0003-4999-9161/AUID
S (BRIDGES TUNNELS)/CC
S 538.1/CC
S MAN MACHINE SYSTEMS/CT
S *MOTOR TRANSPORTATION/CT
S (FAILURE ANALYSIS(S)AUTOMAT?)/CTS MAGNETIC RESONANCE+NT/CT
E AUSSENVERKLEIDUNG+ALL/CTDES FACINGS/CTDES MOTOR TRUCK TERMINALS/CWS US/CY/CS

S (IBM(S)LOS(W)GATOS)/CS

CS, EML/FTDOI/DT(or /TC)
/EML
/ED
/FA
/ISN

SO
DT

Meeting Year (3)Number of Report

/MY
/NR

S 10.1007/S00253-023-12552-X/FTDOIS REPORT/DT
S B/DTS AMERICAN EDU/EMLS ED=20090109
S L10 AND AB/FA
S MACYAC/ISN
S 1212-4834/ISN
S 9197040843/ISN
S ACTA ASTRONAUTICA/JTS J ACOUST SOC AM /JT
S FRENCH/LA
S 900425-900427/MD
S BRUSSELS/ML
S 13230/MN
S TECHNOLOGY GROUP/MO
S (ELECTRONIC MANUFACTURING AND
SYMPOSIUM)/MTS 1990/MY
S AIAA 2005-818/NR

/CT

/JT
/LA
/MD
/ML
/MN
/MO
/MT

AUID
CC
CT

CT
CT
CY

CS, EMLED
FA
ISN, SO

JT, JTA,
JTF, SOLA
MD, SO
ML, SO
MN
MO, SO
MT, SO
MD, SONR

September 2023

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COMPENDEX

General Search Fields (cont'd)
Search Field Name
Publication Date (3)Publication Year (3)Publisher (1)Publisher Item Identifier
Reference Count

Source (contains CODEN, DOI,
journal title and other higher
level titles, ISBN, ISSN,
publisher, meeting information,
meeting organizers andsponsors, number of report,
URL)
Summary Language(ISO code and text)
Supplementary Term
Title*

Uniform Resource Locator
Update Date (3)Word Count, Title

Search
Code
/PD
/PY
/PB
/PUI
/REC
(or
/RE.CNT)
/SO

/SL
/ST
/TI

/URL
/UP
/WC.T

Display
Codes

Search Examples
S JAN-FEB 2007/PD
S L2 AND 1981-1983/PY
S SPRINGER HEIDELBERG/PB
S 1011092002203496/PUI
S 8-10/REC

PD, SOPY, SOPB, SO
PUIREC, SO

S TRANSP SCI/SOS NATMA4/SO
S 0499-9320/SO
S 0-8031-0443-X/SO
S (REMOTE SENSING (S) VEGETATION)/SO
S 9728865201/SO
S PSISDG/SOS GERMAN/SLS DE/SLS GADOLINIUM/ST
S LONGWALL MINING/TI
S (STOCKPILES(S)COKE OVEN)/TI
S ?ALLOCATION?/TIS ELSEVIER JOURNALS/URLS UP=20090127
S 10-20/WC.T

SO

SL
ST
TI

SO, URLED
WC.T(1) Search with implied (S) proximity is available in this field.
(2) EXPAND with German terms may be used in the /CTDE thesaurus field to identify the corresponding English thesaurus terms. Only
English terms are indexed and thus searchable in the database. This search can be carried out in the /CTDE field.
(3) Numeric search field that may be searched using numeric operators or ranges.
(4) Major Controlled Terms preceded by and searched with a leading asterisk.

Property Fields1)
In COMPENDEX a numeric search for a specific set of physical properties (/PHP) is available within the
abstract and title fields. The numeric values are not displayed as single fields, but highlighted within the hit
displays.
Use EXPAND/PHP to search for all available physical properties. A search with the respective field codes will
be carried out in the abstract and title fields. The /PHP index contains a complete list of codes and related text
for all physical properties available for numeric search.
Field Code
/AOS
/BIR
/BIT
/CAP
/CDN
/CMOL

Property

Unit

Search Examples

Mol
Bit (Bit)
Bit
Farad
Ampere/Square Meter
mol/l

S 10/AOS
S 100000-160000/BIR
S BIT > 3 MEGABIT (10A) STORAGE
S 1-10 MF/CAPS CDN>5 A/M**2
S MOLYBD?/BI (S) 2/CMOL

/CON
/DB
/DEG
/DEN

Amount of substance
Bit Rate
Stored Information
Capacitance
Current Density
Molarity (Concentration,amount of substance)
Conductance
DecibelDegreeDensity (Mass Density)

S (Siemens)
DecibelDegree
Kg/m3

/DEQ
/DOS
/DV

Dose Equivalent
DosageViscosity, dynamic

SievertMilligram/Kilogram
Pa * s (Pascal * second)

S 1E-2/CON
S DB>50
S (POLARI? (S) ANGLE)/BI (S) 45/DEG
S (METHOD? (S) COMPO?)/AB (S) 5E3-10E-3/DEN
S DEQ>0.5 (S) RADIATIONS DOS>0.8
S DV>5000

September 2023

5
COMPENDEX

Property Fields(1) (cont'd)
Field Code

Property

Unit

Search Examples

/ECD
/ECH
/ECO

Electric Charge
Electric Charge
Electrical Conductivity

Coulomb/Square Meter
Coulomb
Siemens/Meter

/ELC
/ELF
/ENE
/ERE
/FOR
/FRE
/IU
/KV
/LEN (or /SIZ)/LUMEElectric Current
Electric Field
EnergyElectrical Resistivity
Force
Frequency
International Unit
Viscosity, kinematic
LengthLuminous
Emittance/IlluminanceLuminous Flux
(Luminous Power)
Luminous Intensity
Mass
Mass to Charge Ratio
Magnetic Flux Density

AmpereVolt/Meter
J (Joule)
Ohm * Meter
N (Newton)
Hz (Hertz)
none
m2/s
Meter
Lux

S 1-20 /ECD.EX (XA) ELECTRICAL
S 15/ECHS ECO>5000 (XA) GEOTHERMALEFFECTS
S 1-10/ELC
S 1-10/ELF
S NUTRIENTS AND 100/ENE
S ERE>10
S 50 N/FORS ANALY?/AB (10A) 0-3/FRE
S IU>100 (P) INTERFERONS LUBRICANT/BI (S) 10E-5/KV
S 1-4/LEN
S 10-50/LUME

Lumen

S FLUID (P) LUMF>3

CandelaKg (Kilogram)
none
Tesla
Kilogram/Second
g/mol
mol/kg
none

/NUC
/PER

Mass Flow Rate
Molar Mass
Molality of Substance
Melt Volume Rate,
Melt Flow Rate
Nutrition Content
Percent (Proportionality)

S 5<LUMI<15
S ALLOY/BI (30A) 1E-10-1E-5/M
S MCH=3
S MFD>0E-3(S)MAGNETICRESONANCES MFR>1.2
S 2000-3000 G/MOL/MM
S 01.-10 mol/kg/MOLS
S 5-10/MVR

/PERA
/PHV
/POW

Permittivity, Absolute
pH
Power

Farad/MeterpH
W (Watt)/PRES (or /P)

Pressure

Pa (Pascal)

/RAD
/RES

Bq (Becquerel)
Ohm

/RSP
/SAR

Radioactivity
Electrical
Impedance/resistance
Rotational Speed
Area /Surface Area

/SOL
/STSC
/TCO
/TEMP (or /T)

Solubility
Surface Tension
Thermal Conductivity
Temperature

Gram/100 gram
J/m2
K (Kelvin)
K (Kelvin)/TIM/VEL (or /V)
/VELA
/VLR
/VOL
/VOLT

Time
Velocity
Velocity, angular
Volumetric Flow Rate
VolumeVoltage

S (Second)m/s (Metre per Second)rpm
Cubic Meter/Secondm3
V (Volt)

/LUMF
/LUMI
/M
/MCH
/MFD (or /MFS)/MFR (or /MFL)
/MM
/MOLS
/MVR

none
Percent

Revolution/Minutem2

S NUC<100 (XW) NUTRIENTS (TITAN? (3A) DIOXID?)/AB (S)53/PERS 1-10/PERA (S) BUFFER
S 7.4-7.6/PHV
S (SOLAR? OR PHOTOVOLTAIC?)/BI(10A) 5-10/POW
S (VACUUM (5A) DISTILL?)/BI (S) 10001100/PRESS RAD>100
S VOLTAGE/AB (P) 1-10/RES
S 5000-8000/RSP AND PARAFFIN
S (COATING? OR FOIL?)/BI (S) 10100/SAR
S SOL>20 (10W) WATER
S 60 J/M**2 /STSC
S 2-17/TCO (S) THERM?
S (STABILITY (25A) VITAMIN?) (S)
10/TEMPS CONDUCT?/AB (10W) 0-1/TIM
S EVOL?/BI AND 2E-4-5E-4/VELS VISCO?/AB (S) VELA<350
S 1-10/VLR (XA) VARIABILITY
S ?EFFECT?/BI (15A) 1E-8-2E-8 /VOLS APPLICATION/BI(10A) 5E3<VOLT<7E-3(1) Exponential format is recommended for the search of particularly high or low values, e.g., 1.8E+7 or 1.8E7 (for 18000000) or 9.2E-8(for 0.000000092).

September 2023

6
COMPENDEXTHESAURUS FIELDSThe Engineering Index Thesaurus is available online in fields /CT (Controlled Term) and /CTDE (Controlled
Term in German) (German-English Edition).
All Relationship Codes can be used with both the SEARCH and EXPAND command.
Code
ALL

AUTO (1)
BT
HIE
NOTE
NT
RT
UF
USE

Content
All Associated Terms(BT, SELF, DA, NOTE, USE, USE+, NEW,UF, UF+, OLD, NT, RT, CC)
Automatic Relationship(SELF, USE, USE+, NEW, UF, UF+, OLD)
Broader Terms(BT, SELF)
Hierarchy (all Broader and Narrower Terms)(BT, SELF, NT)
Term with date and scope note
(SELF, DA, NOTE)
Narrower Terms (SELF, NT)
Related Terms (SELF, RT)
Preferred and Forbidden Terms(SELF, UF, UF+, OLD)
Forbidden and Preferred Terms(SELF, USE, USE+, NEW)

ExamplesE SATELLITES+ALL/CT
E BESCHICHTUNGEN+ALL/CTDES COATINGS+ALL/CTDES FLARE STACKS+AUTO/CT
E JUTE FASERN+BT/CTDE
S JUTE FIBERS+BT/CTDEE MAGNETIC DEVICES+HIE/CT
E RAILS+NOTE/CTS RAILROAD TRACKS+NT/CT
E SATELLITES+RT/CT
E MAGNETIC DISK STORAGE+UF/CT
S PARKWAYS+USE/CT(1) Automatic Relationship is SET OFF. In case of SET REL ON, the result of EXPAND or SEARCH without any relationship code is thesame as described for AUTO.

September 2023

7
COMPENDEXDISPLAY and PRINT Formats
Any combination of formats may be used to display or print answers. Multiple codes must be separated by
spaces or commas, e.g., D L1 1-5 TI AU. The fields are displayed or printed in the order requested.
Hit-term highlighting is available for all fields except AU and CS. Highlighting must be ON during SEARCH to
use the HIT, KWIC, and OCC formats.
FormatContent

ExamplesAB
AN
AU
AUID (1)
CC
CS
CT
CY
DT (TC)
ED (UP)
EML (1)FTDOIISN (1)
JT (1)JTA (1)
JTF (1)
LA
MD
ML
MN
MO
MT
NR
PD (1)PB (1)PUI
PY (1)REC (RE.CNT) (1)
SL
SO
ST
TI
UP
URL (1)
WC.T (1)Abstract
Accession Number
AuthorAuthor Identifier (ORCID)Classification CodeCorporate Source (author affiliations, and e-mail addresses)
Controlled Term
Country of Publication
Document Type
Entry Date
E-mail Address
Digital Object Identifier
International Standard (Document) Number
Journal Title
Journal Title, Abbreviated
Journal Title, Full
Language
Meeting Date
Meeting Location
Meeting Number
Meeting Organizer
Meeting Title
Number of Report
Publication Date
Publisher
Publisher Item Identifier
Publication Year
Reference Count
Summary Language
SourceSupplementary Term
Title
Update Date
Uniform Resource Locator
Word Count, Title

D TI ABD 1-5 AND AU TI
D AUID
D CC CT
D CS
D CT CC
D CY
D DT
D ED
D EML
D FTDOI
D ISN
D JT
D JTA
D JTF
D LA
D MD
D ML
D MN
D MO
D MT
D NR
D PD
D PB
D PUI
D PY
D REC
D SL
D SO
D CT ST 5-15
D TI 1-10
D UP
D URL
D WC.T

ABS
ALL
DALL
IALL
ALLO
BIB

AN, AB
BIB, AB, CC, CT, ST
ALL, delimited for post processing
ALL, indented with text labels
AN, TI, AU, MT, MO, ML, MD, SO, PY, MN, DT, LA, AB, CC, CT, ST
AN, TI, AU, CS, NR, SO, PUI, CY, DT, LA, SL, ED(BIB is default)
BIB, indented with text labels
AN, CC, CT, ST
ALL, including AUID
TI, CT (random display without answer numbers)
TI, CC, CT, ST

D ABS
D 1-3 ALLD DALLD IALL

Hit term(s) and field(s)Up to 50 words before and after hit term(s) (KeyWord-In-Context)
Number of occurrences of hit term(s) and field(s) in which they occur

D HIT
D KWIC
D OCC

IBIB
IND
MAX
SCAN (2)
TRIAL (TRI, SAMPLE,
SAM, FREE)
HIT
KWIC
OCC

D BIB
D IBIB
D IND
D MAX
D SCAND TRI(1) Custom display only.
(2) SCAN must be specified on the command line, i.e., D SCAN or DISPLAY SCAN.

September 2023

8
COMPENDEXSELECT, ANALYZE, and SORT Fields
The SELECT command is used to create E-numbers containing terms taken from the specified field in ananswer set.
The ANALYZE command is used to create an L-number containing terms taken from the specified field in ananswer set.
The SORT command is used to rearrange the search results in either alphabetic or numeric order of thespecified field(s).
Field Name
Abstract
Accession Number
AuthorAuthor Identifier (ORCID)
Citation
Classification Code
CODEN
Controlled Term
Corporate Source (author affiliations, and email addresses)
Country of Publication
Document TypeE-mail Address
Entry Date
International Standard Book Number
International Standard (Document) Number
International Standard Serial Number
Journal Title
Journal Title, Abbreviated
Journal Title, Full
Language
Meeting Date
Meeting Location
Meeting Number
Meeting Organizer
Meeting Title
Number of Report
Occurrence Count of Hit Terms
Publication Date
Publisher
Publisher Item Identifier
Publication Year
Reference Count
SourceSummary Language
Supplementary Term
Title
Update Date
Uniform Resource Locator
Word Count, Title

Field CodeANALYZE/
SELECT (1)

SORT

AB
AN
AU
AUID
CIT (RE)
CC
CODEN
CT
CS
CY
DT (TC)EML
ED (UP)
ISBN
ISN
ISSN
JT
JTA
JTF
LA
MD
ML
MN
MO
MT
NR
OCC
PD
PB
PUI
PY
REC (RE.CNT)
SO
SL
ST
TI
UP
URL
WC.T

Y
Y
Y (3)
Y
Y (2,3)
Y
N
Y
Y (3)
Y
Y
Y
Y
N
Y (4)
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y (3)
Y
Y
Y (3)
Y
Y (5)
Y
Y
Y (default)
Y
Y
Y

N
N
Y
Y
N
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
N
Y
Y
Y
Y

(1) HIT may be used to restrict terms extracted to terms that match the search expression used to create the answer set, e.g., SEL HIT
TI.
(2) SELECT CIT or ANALYZE CIT allows you to extract the reference from the source documents in this database and have them
automatically converted to a citation format for searching in SCISEARCH. SEL CIT selects first author, publication year, volume, first
page, and a truncation symbol with /RE appended to the terms created by SELECT.
(3) SELECT HIT and ANALYZE HIT are not valid with this field.
(4) Selects or analyzes CODEN, ISBN, and ISSN with /ISN appended to the terms created by SELECT.
(5) Selects or analyzes CODEN, ISBN, and ISSN with /SO appended to the terms created by SELECT.

September 2023

9
COMPENDEX

Sample Records
DISPLAY BIB OF CONFERENCE
AN
2023-2014106797
COMPENDEX
TI
Research on 3D model and terrain matching method based on the segment oflinear coordinates
AU
Yang Kelong(1); Huo Liang(1,2); Shen Tao(1,3); Geng Mingzhu(1); Li
Miaolin(1); Zhang Xiaoyong(3)Correspondence(s): Shen Tao(1)CS(1)School of Geomatics and Urban Spatial Information, Beijing Universityof Civil Engineering and Architecture, Beijing, China, 100044(2)Key Laboratory of Urban Spatial Information, Ministry of Natural
Resources, Beijing, China, 102616(3)Chinese Academy of Fishery Sciences, Beijing, China, 100141
EMAIL: klong_y@163.com; huoliang@bucea.edu.cn; shentao@bucea.edu.cn;
2108160220004@stu.bucea.edu.cn; lml18845637125@163.com;
zhangxiaoyong@cafs.ac.cn
SO
Fourth International Conference on Geoscience and Remote Sensing
Mapping, GRSM 2022; Proceedings of SPIE - The International Society for
Optical Engineering (2023), Volume 12551, arn: 125511O, 11 refs.
Editor(s): Lohani Tarun Kumar
ISSN: 0277-786X E-ISSN: 1996-756X ISBN: 9781510662162
DOI: 10.1117/12.2668185
Published by: SPIE
Conference: 4th International Conference on Geoscience and Remote
Sensing Mapping, GRSM 2022, Changchun, China, 4 Nov 2022 - 6 Nov 2022
Organizer(s): Academic Exchange Information Centre (AEIC)
URL (Document): https://www.spiedigitallibrary.org/conferenceproceedings-of-spie
CY
United States
DT
Conference; (Conference Paper)
LA
EnglishSL
EnglishEDEntered STN: 22 May 2023
Last updated on STN: 22 May 2023

DISPLAY ALL OF JOURNAL
AN
2023-2014098891
COMPENDEXTI
The green approach of ZnO NPs and its Antioxidant, hemolytic, andphotocatalytic activity and functionalized r-GO-ZnO for energy storage
application
AU
Meena Jayaprakash(1,2); Kumar Annamalai Senthil(1,2); Santhakumar K.(1);Pavithra G.(2); Anusha Dinakaran(2)Correspondence(s): Santhakumar K.(1)CS(1)Nano and Bioelectrochemistry Research Laboratory, Carbon Dioxide andGreen Technology Research Centre, Vellore Institute of Technology
University, Tamil Nadu, Vellore, India, 632 014(2)Department of Chemistry, School of Advanced Sciences, Vellore
Institute of Technology University, Tamil Nadu, Vellore, India, 632 014
EMAIL: ksanthakumar@vit.ac.in
SO
Journal of Materials Science: Materials in Electronics (1 May 2023),
Volume 34, Number 14, arn: 1131, 58 refs.
ISSN: 0957-4522 E-ISSN: 1573-482X
DOI: 10.1007/s10854-023-10373-2
Published by: Springer
URL (Document): https://www.springer.com/journal/10854
CY
United States
DT
Journal; Article
LA
EnglishSL
EnglishSeptember 2023

10
COMPENDEX
ED
AB

CC

CT

ST

Entered STN: 22 May 2023
Last updated on STN: 22 May 2023
The present paper describes the green synthesis of Zinc oxide
nanoparticles (ZnO NPs) from the flowers of L. nepetifolia. Zinc oxide
nanoparticles have gained more interest from researchers due to theirwide applications from biological activity to energy storage system. The
synthesis of ZnO nanoparticles and examined by using Ultraviolet-visible
spectroscopy, Fourier Transform-Infrared spectroscopy, X-ray Diffraction
analysis, Dynamic Light Scattering analysis, Raman spectroscopy,
Scanning Electron Microscopy and Energy Dispersive X-ray spectroscopy,
BET, XPS, Transmission Electron Microscopy, and ThermogravimetricAnalysis. The photocatalytic studies were followed using methylene blue(MB) dye by ZnO nanoparticles by using sunlight as a source. The
degradation of MB dye is found to be 90% within 70 min. Then thesynthesized ZnO nanoparticles help to evaluate the antioxidant
activities against Nitric oxide, Hydrogen peroxide, and DPPH free
radicals. Moreover, the synthesized ZnO NPs show good biocompatibility
nature, and the electrochemical analysis of reduced Graphene Oxide with
Zinc oxide (rGO-ZnO) nanocomposite shows that the prepared rGO-ZnO
nanocomposite has a high specific capacitance of about 667 F gsup-1 incomparison with the pure Zinc oxide nanoparticles (200 F gsup-1) and has
good cycling stability over 1000 cycles.
461.6 Medicine and Pharmacology; 461.9.1 Immunology; 525.7 Energy
Storage; 712.1 Semiconducting Materials; 741.3 Optical Devices andSystems; 761 Nanotechnology; 801 Chemistry; 801.4 Physical Chemistry;
802.2 Chemical Reactions; 803 Chemical Agents and Basic Industrial
Chemicals; 804 Chemical Products Generally; 804.1 Organic Compounds;
804.2 Inorganic Compounds*High resolution transmission electron microscopy; Antioxidants;
Aromatic compounds; Bioactivity; Biocompatibility; Energy storage;
Fourier transform infrared spectroscopy; Free radicals; Graphene; II-VI
semiconductors; Metal nanoparticles; Nitric oxide; Photocatalytic
activity; Scanning electron microscopy; Spectrum analysis; Synthesis(chemical); Thermogravimetric analysis; X ray powder diffraction; ZnO
nanoparticles
Antioxidant activities; Functionalized; Hemolytic activity; Methylene
blue dye; Photocatalytic activities; Reduced graphene oxides;
Synthesised; Zinc oxide nanocomposites; Zinc oxide nanoparticles; ZnO
nanoparticles

DISPLAY MAX
AN
2020-0508105270
COMPENDEX
TI
Exploring Disordered Morphologies of Blends and Block Copolymers forLight-Emitting Diodes with Mesoscopic Simulations
AU
Zhang Jianrui(1); Kremer Kurt(1); Michels Jasper J.(1); Daoulas Kostas
Ch.(1)
Correspondence(s): Michels Jasper J.(1)AUID
ORCID: https://orcid.org/0000-0003-0666-0811 (Zhang Jianrui)
ORCID: https://orcid.org/0000-0003-1842-9369 (Kremer Kurt)
ORCID: https://orcid.org/0000-0003-1591-4449 (Michels Jasper J.)
ORCID: https://orcid.org/0000-0001-9278-6036 (Daoulas Kostas Ch.)
CS
(1)Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz,
Germany, 55128
EMAIL: michels@mpip-mainz.mpg.de; daoulas@mpip-mainz.mpg.deSO
Macromolecules (2020), 117 refs.
ISSN: 0024-9297 E-ISSN: 1520-5835
DOI: 10.1021/acs.macromol.9b02402
Published by: American Chemical Society
URL (Document): http://pubs.acs.org/journal/mamobx
September 2023

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United States
Journal; Article
EnglishEnglishEntered STN: 3 Feb 2020
Last updated on STN: 3 Feb 2020
Recently, disordered blends of semiconducting and insulating polymers
have been used to prepare light-emitting diodes with increased luminous
efficiency. Because the thermodynamic stability of the disordered phasein blends is limited, equivalent diblock copolymers (BCPs) could be analternative. However, the choice between disordered blends and BCPs
requires understanding structural differences and their effect on charge
carrier transport. Using a hybrid mesoscopic model, we simulate blends
and equivalent BCPs of two representative semiconducting and insulating
polymers: poly(p-phenylene vinylene) (PPV) and polyacrylate. The
immiscibility is varied to mimic annealing at different temperatures. We
find stable or metastable disordered morphologies until we reach themean-field (MF) spinodal. Disordered morphologies are heterogeneous
because of thermal fluctuations and local segregation. Near the MF
spinodal, segregation is stronger in BCPs than in the blends, eventhough the immiscibility, normalized by the MF spinodal, is the same. We
link the spatial distribution of PPV with electric conductance. We
predict that the immiscibility (temperature at which the layer isannealed) affects electrical percolation much stronger in BCPs than inblends. Differences in the local structure and percolation between
blends and BCPs are enhanced at a high insulator content.
413 Insulating Materials; 641.1 Thermodynamics; 701.1 Electricity, Basic
Concepts and Phenomena; 708.3 Superconducting Materials; 712.1
Semiconducting Materials; 714.2 Semiconductor Devices and Integrated
Circuits; 803 Chemical Agents and Basic Industrial Chemicals; 815.1
Polymeric Materials*Light emitting diodes; Block copolymers; Carrier transport; Insulating
materials; Semiconducting polymers; Solvents; Superconducting materials;
Thermodynamic stability
Electrical percolation; Insulating polymer; Luminous efficiency;
Mesoscopic modelling; Mesoscopic simulation; Poly-p-phenylenevinylene;
Structural differences; Thermal fluctuations=> E RAILROAD TRACKS+ALL/CT
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