jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Yuris Diksy | Ardina Purnama Tirta | Herawati Herawati | Reza Mulyawan | Moh. Hayat | Udin Asrodudin
Source: Indonesian Journal of Chemical Studies (article, 2025-07-29)
Field: Materials Science — Polymers and Plastics

Development and Characterization of Gold Nanoparticle-Modified SPCEs for the Electrochemical Sensing Gold nanoparticles were successfully synthesized by reducing HAuCl4 using jengkol (Archidendron pauciflorum) extract as a reductant. The synthesized gold nanoparticles were characterized by UV–vis spectroscopy and particle size analyzer (PSA). The synthesized gold nanoparticles were deposited on the screen printed carbon electrode (SPCE) substrate using 2 methods, drop casting and differential pulse voltammetry over a potential range of (-1500) mV to 600 mV, scan rate of 100 mV/s for 5 cycles. The surface plasmon resonance (SPR) band of UV– Vis spectrum at 530.7 nm confirmed the presence of gold nanoparticles. The results of Au nanoparticle characterization using PSA show that the size of the Au-NPs formed is 33.5 nm with an optimal HAuCl4 concentration of 0.20 mM. Characterization of gold nano-deposited SPCE was carried out by measuring the peak current of the 1 mM K3Fe(CN)6/K4Fe(CN)6 system in KCl electrolyte solution (0.1 M) using cyclic voltammetry over a potential range of (-500) mV to 1000 mV, scan rate 100 mV/s for 5 cycles. Gold nanoparticles deposited by differential pulse voltammetry showed a higher current response compared to drop casting deposition. Colloidal gold ; Characterization (materials science) ; Nanotechnology ; Electrochemistry ; Materials science ; Nanoparticle ; Chemistry ; Electrode ; Physical chemistry Conducting polymers and applications ; Polydiacetylene-based materials and applications ; Gas Sensing Nanomaterials and Sensors
Authors: A.O. Shchur | V.V. Levenets | O.P. Omelnyk | A.Yu. Lonin | M.F. Kozhevnikova
Source:  (article, 2025-04-03)
Field: Materials Science — Surfaces, Coatings and Films

DETERMINATION OF CONTENT AND DISTRIBUTION OF CARBON IN HIGH-TECHNOLOGIC MATERIALS USING NRA This article is devoted to a review of physical and nuclear-physical methods of analysis, which are used for the determination of the stoichiometry, isotopic content and structure of carbon-based materials, as well as for the determination of the content and distribution of carbon in various matrices. The examples are given of the authors' application of nuclear-physical methods of analysis to study the properties of synthetic-diamond coatings on a silicon substrate and the distribution of carbon in depth in a sample of a high-entropy alloy based on Ti-Zr-Hf-V-Nb-Ta. The options for analyzing the elemental and isotopic content of carbon considered in the work indicate the great possibilities of using resonant nuclear reactions 12 C(p, ) 13 N and 13 C(p, ) 14N in scientific and technical research. Carbon fibers ; Content distribution ; Content (measure theory) ; Environmental science ; Materials science ; Nanotechnology ; Computer science ; Mathematics ; Composite material Electron and X-Ray Spectroscopy Techniques ; Analytical chemistry methods development ; Nuclear Physics and Applications
Authors: Narciso M. Garrido | Ángel García-González | Alejandro Manchado | Pablo Riesco | Carlos T. Nieto | David Dı́ez
Source: SynOpen (article, 2025-12-01)
Field: Chemistry — Inorganic Chemistry

Asymmetric Synthesis of 2-Arylethylamines: 2025. An Updated Review Abstract 2-Arylethylamines are present in several natural bioactive compounds, as well as in many nitrogen-containing drugs. Their ability to cross the blood–brain barrier makes this family of compounds of special interest in medicinal chemistry. Asymmetric methodologies towards the synthesis of 2-arylethylamine motifs are of significant interest due to the challenges they present. In this graphical review, we highlight recent advances in the metal-free and metal-catalyzed asymmetric synthesis of 2-arylethylamines, covering the literature published in 2025 (up until late October). We showcase the different methodologies towards the aforementioned motif, including chiral induction, organocatalysis, organophotocatalysis and enzymatic catalysis. Enantioselective synthesis ; Context (archaeology) ; Natural (archaeology) ; Enzyme inhibition Asymmetric Hydrogenation and Catalysis ; Asymmetric Synthesis and Catalysis ; Catalytic C–H Functionalization Methods
Authors: Ricardo Garsed | Guillermo Hernán | Josefina Perles | J. Martinez | Aurelio Cabeza | Eugenio Cantelar | Félix Zamora | Javier Troyano | Pilar Amo‐Ochoa
Source: Advanced Optical Materials (article, 2025-12-25)
Field: Chemistry — Inorganic Chemistry

Dual‐Emission Switching in a Mn(II)‐Based Hybrid Bromide via Water Coordination: Synthesis, Structure, and Processing Abstract This work presents the synthesis, characterization, and functional evaluation of a new luminescent manganese(II) hybrid halide, (pr‐ted) 2 [MnBr 4 ] , containing the organic cation (pr‐ted) + (1‐propyl‐1,4‐diazabicyclo[2.2.2]octane). The compound exhibits green photoluminescence and undergoes a reversible transformation to a red‐emitting hydrated form, (pr‐ted) 2 [MnBr 4 (OH 2 )] , upon exposure to ambient humidity. Single‐crystal X‐ray diffraction reveals differences in coordination geometry between the two phases: a tetrahedral environment in the anhydrous form and a distorted trigonal bipyramidal in the hydrated phase. This structural change is responsible for the observed red shift in emission. The interconversion is fully reversible through thermal treatment or vacuum exposure. Photoluminescence and density functional theory calculations are employed to investigate optical behavior and electronic transitions. In situ X‐ray powder diffraction confirms the humidity‐induced phase transition. Both forms exhibit solubility in polar solvents, enabling the fabrication of luminescent coatings via wet‐processing methods. Impregnation and nebulization approaches are explored. The impregnation process enables the fabrication of composites on porous materials, while the nebulization method produces homogeneous coatings on non‐porous substrates. These coatings maintain reversible luminescent switching, validating the potential of (pr‐ted) 2 [MnBr 4 ] as a responsive material for humidity sensing. The integration of humidity‐sensitive luminescent compounds into functional platforms using cost‐effective techniques is demonstrated, for applications in environmental monitoring. Luminescence ; Photoluminescence ; Fabrication ; Density functional theory ; Porosity ; Solubility ; Hybrid material ; Diffraction Metal-Organic Frameworks: Synthesis and Applications ; Perovskite Materials and Applications ; Luminescence and Fluorescent Materials
Authors: Wenusara Satheekshana | Pasan Henadeera | Nalaka Samaraweera | Galhenage A. Sewvandi
Source: APL Electronic Devices (article, 2025-11-25)
Field: Materials Science — Materials Chemistry

Tuning electronic transport properties of in-plane-graphene–h-BN superlattices for improved thermoelectric material In-plane graphene–h-BN (h-BN–G) superlattices have been identified as promising thermoelectric (TE) materials owing to their significantly reduced lattice thermal conductivity compared to that of pristine graphene. To further tune the TE response, variations in the superlattice period length (PL) and biaxial strain were introduced. The TE properties were evaluated using the Boltzmann transport theory within the constant relaxation time approximation, with the Wannier functions derived from density functional theory. It was revealed that the Seebeck coefficient (S) was enhanced by an order of magnitude relative to that of pristine graphene. Compared to the unstrained condition, 10% biaxial compressive strain enhances the S by ∼42%, while 10% biaxial tensile strain reduces it by ∼29%. In addition, introduction of h-BN causes the emergence of electronic bandgaps and leads to concurrent reductions in the electrical conductivity and electronic thermal conductivity per unit relaxation time near the Fermi window. Subsequently, the maximum power factor per unit relaxation time (PF/τ was enhanced by an order of magnitude relative to that of the pristine graphene near to the conduction and valence bands. With increasing PL, a narrowing of the bandgap and further reductions in PF/τ were observed. Notably, a 10% compressive strain enhances the PF/τ for both carrier types, while a 10% tensile strain suppresses it. Furthermore, the response to strain is highly asymmetric between the electrons and holes. These findings demonstrate that band engineering through control of grown PL and applied strain offers an effective approach for tuning the electronic transport properties of the h-BN–G TE applications. Seebeck coefficient ; Superlattice ; Thermoelectric effect ; Thermoelectric materials ; Thermal conductivity ; Fermi level ; Band gap ; Electrical resistivity and conductivity ; Thermal conduction ; Density of states Graphene research and applications ; Advanced Thermoelectric Materials and Devices ; Thermal properties of materials
Authors: Heyi Xu | You Jiang | Jie Xie | Yao Li | Xiang Fang | Meiying Liu | Ziyu Qu | Guang Yang | Di Zhang
Source:  (preprint, 2025-06-30)
Field: Chemistry — Spectroscopy

Investigation of In-Trap High-energy Collision Dissociation Methodology and Dissociation Conditions Using Dual-Pressure Linear Ion Trap Mass Spectrometry Rationale: Dissociation is a critical analytical method in mass spectrometry research. Among various dissociation techniques, Higher-energy Collision Dissociation (HCD) stands out as a pivotal tool due to its ability to generate more low-mass fragment Dissociation (chemistry) ; Collision-induced dissociation ; Ion trap ; Quadrupole ion trap ; Mass spectrometry ; Ion ; Collision ; Trap (plumbing) ; Atomic physics ; Chemistry ; Tandem mass spectrometry ; Physics ; Chromatography ; Physical chemistry ; Computer science ; Organic chemistry Mass Spectrometry Techniques and Applications ; Analytical chemistry methods development ; Ion-surface interactions and analysis
Authors: Petr Ashcheulov | Marina Davydova | Andrew Taylor | Pavel Hubı́k | Alexander Kovalenko | Jaromı́r Kopeček | Ladislav Fekete | Zdeněk Weiss
Source: Materials Advances (article, 2025-11-20)
Field: Materials Science — Materials Chemistry

Ultrathin boron-doped diamond – surface-wave-plasma synthesis of semi-conductive nanocrystalline boron-doped diamond layers at low temperature Ultrathin boron-doped diamond layers, synthesized at 500 °C, provide a cost-effective, energy-efficient material with moderate semi-conductive properties for advanced functional uses. Diamond ; Material properties of diamond ; Nanocrystalline material ; Layer (electronics) ; Chemical vapor deposition ; Nanocrystal Diamond and Carbon-based Materials Research ; Graphene research and applications ; Plasma Applications and Diagnostics
Authors: Meryem Bouaziz | Samir El Masaoudi | Aymen Mahmoudi | Eva Desgué | Marco Pala | Pavel Dudin | Mathieu G. Silly | Julien Chaste | Fabrice Oehler | P. Legagneux | J. Ávila | Iann C. Gerber | Abdelkarim Ouerghi
Source: ArXiv.org (preprint, 2025-10-20)
Field: Materials Science — Materials Chemistry

Hybridization in van der Waals epitaxy of PtSe2/h-BN and PtSe2/graphene heterostructures Van der Waals (vdW) heterostructures, which combine bi-dimensional materials of different properties, enable a range of quantum phenomena. Here, we present a comparative study between the electronic properties of mono- and bi-layer of platinum diselenide (PtSe2) grown on hexagonal boron nitride (h-BN) and graphene substrates using molecular beam epitaxy (MBE). Using angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT), the electronic structure of PtSe2/graphene and PtSe2/h-BN vdW heterostructures are investigated in systematic manner. In contrast to PtSe2/h-BN, the electronic structure of PtSe2/graphene reveals the presence of interlayer hybridization between PtSe2 and the graphene, which is evidenced by minigap openings in the π-band of graphene. Furthermore, our measurements show that the valence band maximum (VBM) of monolayer PtSe2 is located at the Γ point with different binding energies of about -0.9 eV and -0.55 eV relative to the Fermi level on h-BN and graphene and substrates, respectively. Our results represent a significant advance in the understanding of electronic hybridization between TMDs and different substrates, and they reaffirm the crucial role of the substrate in any nanoelectronic applications based on van der Waals heterostructures. van der Waals force ; Molecular beam epitaxy ; Heterojunction ; Monolayer ; Electronic structure ; Fermi level ; Photoemission spectroscopy ; Density functional theory ; Graphene 2D Materials and Applications ; Graphene research and applications ; Thermal properties of materials
Authors: Tobias Walther | Eleni Dalaka | Gotthold Fläschner | Ilia Platzman | Sadaf Pashapour | Martin Emmert | Pere Roca‐Cusachs | Xavier Trepat | Kerstin Göpfrich
Source: bioRxiv (Cold Spring Harbor Laboratory) (preprint, 2025-07-24)
Field: Materials Science — Surfaces, Coatings and Films

Mechanically Tunable DNA Hydrogel Microparticles for 3D Cellular Systems Hydrogel microparticles (HMPs) are powerful tools to study and manipulate cellular behavior in 3D cell culture systems and animal models. Here, fully DNA-based HMPs are presented, whose material properties can be precisely tuned by sequence-programmable design of self-assembling DNA nanostructures. These DNA-HMPs offer control over size, stiffness, viscoelasticity and ligand presentation. They are formed by microfluidic encapsulation of two types of orthogonal DNA nanostars and a sequence-complementary DNA linker in water-in-oil droplets. By varying the valency of the DNA nanostar designs, tunable mechanical properties are achieved – spanning three orders of magnitude in Young’s modulus from 30 Pa to 6.5 kPa with distinct viscoelastic behavior. Click-chemistry based functionalization with the small fibronectin-derived peptide cyclic-RGD (c[RGD]) enables integration into fibroblast spheroids. DNA-HMPs are stably retained within the spheroids for several days and undergo design- and stiffness-dependent remodeling, indicating active interactions between the cells and the DNA-HMPs. Combining tunable material properties and inherent biocompatibility of DNA with straightforward functionalization and stimuli-responsiveness, these DNA-HMPs represent a versatile tool to probe and manipulate tissue behaviors in 3D cell cultures and in vivo models. Table of Contents DNA hydrogel microparticles are designed to exhibit controllable viscoelasticity and stiffness across three orders of magnitude from 30 Pa to 6.5 kPa. They are uptaken into fibroblast spheroids where they are actively remodeled by cellular forces depending on their mechanical properties. DNA ; Viscoelasticity ; Biophysics ; Microfluidics ; Scaffold ; Nanotechnology ; Biocompatibility ; Materials science ; Tissue engineering ; Chemistry ; Biomedical engineering ; Biology ; Biochemistry ; Composite material Polymer Surface Interaction Studies ; Cellular Mechanics and Interactions ; Microfluidic and Bio-sensing Technologies
Authors: F. Khoury | Zeina Habli | Jad W. Daorah | Yuchen Xu | Makram Obeid | Samir Alam | Gert Cauwenberghs | Massoud L. Khraiche
Source: bioRxiv (Cold Spring Harbor Laboratory) (preprint, 2025-11-03)
Field: Materials Science — Polymers and Plastics

Geometry-Optimized Inkjet-Printed Organic Electrochemical Transistors with High Transconductance and Sub-Millisecond Response for Biosensing and Neural Recording Abstract Organic Electrochemical Transistors (OECTs) are witnessing rapid growth in biomedical applications and are increasingly becoming an integral part of bio-electronic interfaces. High-performing OECTs are typically fabricated using multistep photolithography and conventional spin-coating and lift-off processes, and while printing techniques have emerged as promising alternatives, they still face challenges in achieving comparable resolutions, reproducibility and performance metrics. Several groups have demonstrated printed OECTs using PEDOT:PSS as the channel material, highlighting the promise of additive manufacturing for scalable bioelectronics. In this work, we build upon these advances and develop an optimized inkjet-printed OECT platform that achieves transconductance values up to 15 mS and sub-millisecond response times as low as 0.31 ms. Our approach systematically optimizes OECT geometrical parameters—channel width, length, and thickness—through precise patterning and oxygen plasma surface modification to overcome longstanding limitations in inkjet printing resolution and reproducibility. The resulting devices exhibit outstanding electrical stability, high amplification, and fast dynamic response. Using a configuration optimized for biosensing, we demonstrate the detection of the heart failure biomarker NT-proBNP within a clinically relevant range of 10–400 pg/mL, with a sensitivity of 0.038% ΔI DS /pg/mL. In a separate configuration on a flexible substrate tailored for in vivo biopotential recording, we showcase the devices’ capabilities by effectively capturing epileptic seizure progression in a rat model with high signal fidelity. This work demonstrates how careful process and geometry optimization can close the performance gap between printed and conventionally fabricated OECTs, enabling scalable, reproducible, and substrate-flexible bioelectronic platforms. Transconductance ; Photolithography ; Transistor ; Biosensor ; Printed electronics ; Substrate (aquarium) ; High resolution ; Sensitivity (control systems) ; Scalability Conducting polymers and applications ; Organic Electronics and Photovoltaics ; Advanced Sensor and Energy Harvesting Materials
Authors: Beatriz Viña-Bausá | M. A. García-Blázquez | Shatakshi Chourasia | Rigo A. Carrasco | Diego Expósito | I. Brihuega | J. J. Palacios
Source: ArXiv.org (preprint, 2025-01-21)
Field: Materials Science — Materials Chemistry

Building unconventional magnetic phases on graphene by H atom manipulation: From altermagnets to Lieb ferrimagnets Engineering all fundamental magnetic phases within a single material platform would mark a significant milestone in materials science and spintronics, reducing complexity and costs in device fabrication by eliminating the need for integrating and interfacing different materials. Here, we demonstrate that graphene can host all non-relativistic magnetic phases-namely, diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism, ferrimagnetism, altermagnetism and fully compensated ferrimagnetism -- by using single hydrogen atoms as building blocks. Through precise manipulation of these atoms by scanning tunneling microscopy, we can experimentally create all such magnetic phases. Their different magnetic character is confirmed by density functional theory and mean-field Hubbard calculations. In particular, we show that the new magnetic paradigm known as altermagnetism can be realized, exhibiting directionally spin-split energy bands coexisting with zero net magnetization due to protecting spatial symmetries. It is furthermore possible to create fully compensated ferrimagnets, lacking these symmetries and therefore presenting unrestricted spin splitting of the bands, with a vanishing net magnetization which in this case is protected by Lieb's theorem. These findings put forward H-functionalized graphene as a versatile platform to design, build and study these new emergent magnetic phases at the atomic scale. Graphene ; Atom (system on chip) ; Condensed matter physics ; Nanotechnology ; Physics ; Materials science ; Computer science ; Parallel computing Graphene research and applications ; Parallel Computing and Optimization Techniques ; Magnetic Field Sensors Techniques
Authors: C. H. Bailey | Connor Donlan | Matthew Glace | Gabrielle Broussard | Someshwar Nagamalla | Lane B. Carasik | Thomas D. Roper
Source: Reaction Chemistry & Engineering (article, 2025-12-05)
Field: Chemistry — Organic Chemistry

Reactor and kinetic study advances for highly acidic solvolysis-mediated Friedel–Crafts reaction This study presents a kinetic model that simulates the consumption of 4-hydroxybenzoic acid (4-HBA), the formation of di-isopropyl benzoic acid (DIPBA) via a Friedel–Crafts alkylation reaction, and the generation of key impurities. Benzoic acid ; Kinetic energy ; Alkylation ; Kinetics ; Chemical reaction kinetics ; Chemical kinetics Chemical Reaction Mechanisms ; Synthesis of Indole Derivatives ; Organic and Inorganic Chemical Reactions
Authors: Cheng Tang | Qian Zhou | Ziqing Gao | Peng Pei | Bing Wang | Zuojun Liu | Shunqing Xu | Hanzeng Li
Source: bioRxiv (Cold Spring Harbor Laboratory) (preprint, 2025-07-21)
Field: Chemistry — Organic Chemistry

A Photo-regulatable Intein Based Trans-Splicing tool for Protein and Organelle Relocalization to Different Subcellular Compartments Abstract The dynamics of protein subcellular localization are intricately regulated, requiring new tools for controlling protein translocation to uncover the biological significance of post-translational regulation of protein localization. Here, we developed a new method, P rotein R erouting via IN tein-mediated T rans- S plicing (PRINTS), which enables precise control of protein translocation across diverse subcellular compartments. By reconstituting functional signaling peptides, PRINTS can efficiently relocalize fluorescent proteins to the 26S proteasome, nucleus, mitochondria, plasma membrane, endomembrane organelles, and liquid-liquid phase separation (LLPS) condensates. Furthermore, we incorporated the optically regulated dimerization domain CRY2clust into the PRINTS system, achieving light-mediated control of protein entry into the cell membrane and LLPS membraneless compartments. Strikingly, we observed that HNRNPA1 promiscuously recruit CRY2- or intein-containing proteins into LLPS condensate, whereas FXR1, another LLPS protein showed minimal non-specific activity. PRINTS also allow organelle relocalization, such as LLPS condensates or mitochondria to cell membrane in a light-controllable manner. Overall, PRINTS provides a versatile and robust platform for manipulating protein and organelle subcellular translocations, offering a powerful tool to investigate the regulatory coordination and crosstalk between membranous and membraneless compartments in response to physiological needs. Intein ; Organelle ; Cell biology ; Subcellular localization ; RNA splicing ; Protein subcellular localization prediction ; Biology ; Chemistry ; Computational biology ; Cytoplasm ; Genetics ; Gene Click Chemistry and Applications ; Ubiquitin and proteasome pathways ; RNA Research and Splicing
Authors: Steven Compère | Rizwan Minhas | Isabelle Batonneau‐Gener | Christelle Miqueu | Laurent Perrier | Alexander Sachse
Source: Microporous and Mesoporous Materials (article, 2025-09-02)
Field: Chemistry — Inorganic Chemistry

Zeolite-templated carbon pellets by in situ generated binder: Deformation behavior under high-pressure CO2 adsorption Pellets ; Zeolite ; Adsorption ; In situ ; Materials science ; Chemical engineering ; Carbon fibers ; Deformation (meteorology) ; Molecular sieve ; Composite material ; Mineralogy ; Chemistry ; Organic chemistry ; Catalysis ; Engineering Zeolite Catalysis and Synthesis ; Advanced ceramic materials synthesis ; Membrane Separation and Gas Transport