Review
Chemistry, Applied
Dunshuai Qu, Ting Qi, Hui Huang
Summary: This article systematically reviews the polymerization methods of A-A-type polymers and the recent advancements applied in OFETs and PSCs, providing constructive guidance for the further development of high-performance n-type polymer materials by analyzing the synthesis and the relationship between device performances and polymer molecular structures.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Polymer Science
Tingting He, Shanshan He, Arzugul Muslim
Summary: By using a concise and scalable method, polybenzidine based donor-acceptor conductive and conjugated polymers with narrow optical and electrochemical band gaps were synthesized successfully. The electrodes modified with these conjugated polymers and their carbon cloth (CC)-supported flexible electrodes demonstrated excellent capacitance characteristics. Introducing substituents to the donor unit improved its capacitance properties. All samples exhibited high specific discharge capacitance (>344.8 F.g(-1)) and minimal capacity decay after 2500 cycles. The introduction of methyl substitution in P2 resulted in a first discharge specific capacitance of 655.6 F.g(-1), an energy density of 52.0 Wh.kg(-1), and a power density of 1627.83 Wh.kg(-1), which were all relatively high. Despite the already large specific capacitance of P2, further significant increases in specific capacitance were observed after CC supporting with an increased power density of P2@CC, indicating great potential for flexible device applications.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Environmental
Young Un Kim, Boo Soo Ma, Youngno Kim, Su Hong Park, Hungu Kang, Hyo Jae Yoon, Min Ju Cho, Taek-Soo Kim, Jung Hyun Kim, Dong Hoon Choi
Summary: This study compared the mechanical properties of a main-chain conjugated copolymer and a donor-acceptor polymer blend, finding that the former exhibited higher crack-onset-strain and toughness. Using the former as the active layer material in flexible PSCs can lead to superior mechanical stability under bending conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Doyeon Kim, Minho Yoon, Young Tea Chun, Jiyoul Lee
Summary: This study investigates the impact of fluorine-fluorine interactions on the charge transport properties of semiconductor channels in polymer-based field effect transistors, demonstrating that fluorinated units can enhance crystallinity and field-effect mobility. However, interactions between fluorinated polymer dielectrics and fluorinated functional moieties may result in electron localization and device performance degradation.
ORGANIC ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Yuan-Zhao Peng, Guang-Chen Guo, Song Guo, Li-Hui Kong, Tong-Bu Lu, Zhi-Ming Zhang
Summary: Decorating conjugated microporous polymers with polycyclic aromatic hydrocarbons has improved photosensitization and facilitated efficient photosynthesis by promoting intersystem crossing and electron-hole separation. The structure-property-activity relationship of these polymers demonstrates a new approach for developing heavy-atom-free heterogeneous photosensitizers with highly efficient sensitizing activity at a molecular level.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Mingyan Li, Chengtao Gong, Jiawei Du, Debo Ding, Dandan Du, Danfeng Wang, Jianrui Jiang, Tingting Li, Chan Zheng, Yun-Fang Yang, Yuanbin She, Jianhong Jia
Summary: This study successfully synthesized a series of donor-acceptor covalent organic frameworks (COFs) films with uniform transparency and narrow optical band gap. The COFs films exhibited excellent third-order nonlinear optics (NLO) performance, making them a promising candidate for high-performance NLO optical devices.
ACS MATERIALS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Tian Huang, Gengyuan Zhang, Ruwei Chen, Shangjun Lin, Hujing Zhou, Jiangtao Li, Lai-Hon Chung, Xuanhe Hu, Lin Yu, Jun He
Summary: In this study, two triazine-based conjugated microporous polymers were constructed as separator modifiers for high-performance lithium-sulfur batteries. The CMP-B@CNT composite exhibited faster ion transportation and better electron transfer kinetics, leading to an excellent initial capacity and favorable cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Fan Wang, Rui Liao, Feng Wang
Summary: This study presents an effective strategy for controlling the pathways of p-conjugated supramolecular polymers. By incorporating donor and acceptor units on the monomeric structure, it is possible to achieve parallel-stacked metastable polymers that convert to thermodynamically stable slip-stacked polymers. The presence of donor-acceptor functionality on the seed structure is crucial for accelerating the pathway conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jiancheng Rao, Liuqing Yang, Xue Li, Lei Zhao, Shumeng Wang, Hongkun Tian, Junqiao Ding, Lixiang Wang
Summary: A novel steric locking strategy was proposed by introducing methyl groups into D-A conjugated polymers, leading to efficient TADF with extremely low energy splitting. Devices fabricated using this strategy exhibited record-high external quantum efficiency.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Zhaolin Li, Hua Fang, Zupeng Chen, Weixin Zou, Chengxiao Zhao, Xiaofei Yang
Summary: In this study, novel triazine-based conjugated polymer photocatalysts were designed and synthesized by introducing electron-drawing 1,3,4-oxadiazole units, demonstrating excellent photocatalytic hydrogen production performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Applied
Xiaomin Wu, Xiangyu Hao, Ping Deng, Huipeng Chen
Summary: A newly designed and synthesized polymerized small-molecule acceptor, NC-PY6, showed promising results in polymer solar cells with the polymer donor D18, demonstrating the potential of this molecular design strategy for high-performance all-polymer solar cells.
Article
Polymer Science
Chang-Shuai Dong, Bin Meng, Jun Liu, Li-Xiang Wang
Summary: Researchers developed three acceptor-acceptor type organoboron polymers and studied the effect of backbone configuration on the thermoelectric performance of n-type polymer materials. They found that the polymer with a pseudo-straight backbone configuration exhibited higher crystallinity and electron mobility, resulting in increased electronic conductivity and power factor after n-doping.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Anna Grobelny, Artur Grobelny, Szczepan Zapotoczny
Summary: In this study, we demonstrate the synthesis of surface-grafted D-A polymer brushes by alternating attachment of tailored monomers. The structure and properties of the brushes can be controlled by different coupling reactions, such as Sonogashira, Stille, and Huisgen cycloaddition. The D-A brushes exhibit reduced bandgaps, semiconducting properties, and the ability to form aggregates.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
David Merckle, Olivia King, Andrew C. Weems
Summary: Ring-opening copolymerization (ROCOP) of polyesters using metallic catalysts can be toxic and environmentally concerning. Organobase catalyzed ROCOP offers a cleaner and safer alternative while maintaining structural control. This study demonstrates the use of organobases with and without supramolecular thiourea co-catalysts for ROCOP of functional polyesters. The resulting polyesters are used in vat polymerization 4D printing, showcasing their shape memory capabilities. Molecular weight is found to impact various physical properties and cytocompatibility.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Hee Jung Kim, Byeonggwan Kim, Yanghyun Auh, Eunkyoung Kim
Summary: Organic photothermal materials have garnered significant interest in the fields of photoenergy harvesting and thermal engineering due to their unique functions. Pi-conjugated organic PTMs, in particular, offer advantages in thin film applications with high light absorptivity, ease of synthesis, and tunability of molecular structures.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Nikita S. Buryak, Dmitrii Anishchenko, Eduard E. Levin, Sergey Ryazantsev, Vlad Martin-Diaconescu, Maxim Zakharkin, Victoria A. Nikitina, Evgeny Antipov
Summary: High-voltage extraction of sodium ions can increase specific energy but leads to capacity decrease and hysteresis. Electrochemical and structural analysis explain the degradation of Na4MnV(PO4)(3), which is mainly attributed to phase transformation and changes in the local environment.
JOURNAL OF POWER SOURCES
(2022)
Article
Biochemistry & Molecular Biology
Petr Konarev, Melissa A. Graewert, Cy M. Jeffries, Masakazu Fukuda, Taisiia A. Cheremnykh, Vladimir V. Volkov, Dmitri Svergun
Summary: SAXS is commonly used for structural analysis of biological macromolecules in solution, and combining SAXS with chromatography setups has become popular in research. The computer program EFAMIX, based on evolving factor analysis (EFA), efficiently restores scattering and concentration profiles of components from mixed SAXS data, proving useful for interpretation and analysis of fractions in the sample.
Article
Physics, Applied
Y. A. Ovchenkov, D. A. Chareev, E. S. Kozlyakova, E. E. Levin, M. G. Mikheev, D. E. Presnov, A. S. Trifonov, O. S. Volkova, A. N. Vasiliev
Summary: Our study on FeSe1-xTex crystals with x < 0.15 reveals phase separation into phases with different stoichiometry of iron. This phase separation suggests structural instability of the iron plane within the studied compositions. We tentatively propose an explanation for this structural instability based on possible changes in bond polarity and the unique d-d exchange in the iron plane.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Electrochemistry
Leonid Pugolovkin, Eduard E. Levin, Natalia A. Arkharova, Anton S. Orekhov, Sergey A. Urvanov, Vladimir Z. Mordkovich, Galina A. Tsirlina
Summary: In this study, we report the cathodic deposition of birnessite oxide from permanganate alkaline solutions into porous flexible cloth consisting of carbon nanotubes. By using electron microscopy techniques, we investigated the distribution of the oxide in the pores. The deposition mode was found to affect the oxide distribution, with the intermittent potentiostatic mode facilitating the penetration of the solvent into the cloth pores and resulting in a more homogeneous hybrid material.
ELECTROCHIMICA ACTA
(2022)
Article
Polymer Science
Gleb O. Vasiliev, Marina A. Pigaleva, Inesa V. Blagodatskikh, Dmitrii M. Mazur, Eduard E. Levin, Alexander V. Naumkin, Elena P. Kharitonova, Marat O. Gallyamov
Summary: This study explores a method of chitosan decomposition using peroxycarbonic acid solution under high CO2 pressure. The results show that chitosan oligomers with suitable molecular weight can be obtained even with low hydrogen peroxide concentrations and short processing times. The obtained polymer exhibits good ability to form porous matrices, but its thermal stability is somewhat decreased.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Polymer Science
Evgenia S. Dmitrieva, Tatyana S. Anokhina, Eduard G. Novitsky, Vladimir V. Volkov, Ilya L. Borisov, Alexey V. Volkov
Summary: This review focuses on the application of bulk synthetic polymers such as polysulfone, polyethersulfone, polyacrylonitrile, and polyvinylidene fluoride for the separation of oil-water emulsions. The methods for hydrophilization of membranes based on these polymers, including polymer blending, introduction of inorganic additives, and surface modification, are analyzed. Membranes based on natural hydrophilic materials, such as cellulose and its derivatives, are also compared.
Article
Polymer Science
Andrey L. Didenko, Aleksey Gennad'evich Ivanov, Valentina E. Smirnova, Gleb V. Vaganov, Tatyana S. Anokhina, Ilya L. Borisov, Vladimir V. Volkov, Alexey V. Volkov, Vladislav V. Kudryavtsev
Summary: A novel method for fabricating films based on non-soluble polymers was proposed in this study. By selectively decomposing soluble blocks, an insoluble polyimide film was successfully obtained. The polymeric films obtained by controlled decomposition showed good solvent resistance and similar properties to the homopolymer.
Article
Biochemistry & Molecular Biology
Dmitry Matveev, Ilya Borisov, Vladimir Vasilevsky, Galina Karpacheva, Vladimir Volkov
Summary: The viscosity of the dope solution is a crucial factor influencing the properties of hollow fiber membranes. This study demonstrated that even slight changes in temperature leading to changes in viscosity can significantly impact the characteristics of polysulfone hollow fiber membranes, affecting parameters such as wall thickness, permeance, selectivity, pore size, and surface porosity.
Article
Biochemistry & Molecular Biology
Alexander O. O. Malakhov, Stepan E. E. Sokolov, Evgenia A. A. Grushevenko, Vladimir V. V. Volkov
Summary: A solubility-selective membrane based on crosslinked poly(tetradecyl methyl siloxane) was synthesized to remove C3+ hydrocarbons from methane and other permanent gas streams. An abnormal temperature dependence of sorption was detected, contradicting the generally accepted exothermic sorption process. The sorption behavior is related to the crystallization of the alkyl side chains at temperatures below 10 degrees C. The gas permeability and solubility of alkanes decrease in the order n-C4H10 > C2H6 > CH4, indicating the selective properties of the membrane.
Article
Chemistry, Organic
V. N. Bakunin, V. V. Volkov, Yu. N. Bakunina
Summary: Using IR spectroscopy and small-angle X-ray scattering methods, this study investigates the initial steps of neutralization of commercial additives by model acids. The results show that the sulfonate additive crystallizes into vaterite with an increase in size, while the salicylate additive does not crystallize and has a slightly reduced size. The authors propose an explanation based on the strength of the acids and water solubility of the calcium salts.
PETROLEUM CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Dmitry Matveev, Alisa Raeva, Ilya Borisov, Vladimir Vasilevsky, Yulia Matveeva, Azamat Zhansitov, Svetlana Khashirova, Vladimir Volkov
Summary: Polysulfones with chlorine and hydroxyl terminal groups were synthesized for the first time and studied for producing porous hollow fiber membranes. The synthesized polymers exhibited a wide range of molecular weights and the presence of terminal groups according to analytical techniques such as NMR and GPC. Promising samples with predominantly -OH terminal groups were selected and an excellent porous hollow fiber membrane with high helium permeability and selectivity was produced.
Article
Polymer Science
Evgenii I. Perepelkin, Maria A. Sinolits, Gennadii A. Badun, Maria G. Chernysheva, Nelya M. Anuchina, Sergey S. Abramchuk, Eduard E. Levin, Natalia P. Bakuleva, Dmitrii A. Popov, Ivan S. Chaschin
Summary: Firmly bonded antimicrobial protective coating made of chitosan nanoparticles has been developed for enhancing the functionality of medical devices, especially bioprosthetic heart valves in cardiac surgery. The coating is obtained using a biocompatible and self-neutralizing carbonic acid as a polymer solvent. This unique approach allows the formation of stable chitosan nanoparticles in carbonic acid solution and the doped nanoparticles show enhanced deposition and antimicrobial activity when applied on the biomatrix.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Chemistry, Physical
Andrey Yu. Sosorev, Igor I. Ponomarev, Dmitry I. Dominskiy, Konstantin A. Lyssenko, Olga D. Parashchuk, Vasily A. Trukhanov, Vladislav G. Konstantinov, Nikita O. Dubinets, Dmitry Yu. Paraschuk
Summary: In this study, a novel donor-acceptor compound NDI-Stb was synthesized and its structure and properties were investigated. It was found that optical absorption and high-frequency Raman spectra were inherited from the donor and acceptor moieties, while photoluminescence was determined by the whole molecule. Strong intermolecular interactions in NDI-Stb crystals were discovered, leading to suppression of dynamic disorder and enhancement of solid-state luminescence. The results highlight the potential of NDI-Stb in optoelectronic applications and improve the understanding of structure-property relationships in organic semiconductors.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Physics, Multidisciplinary
E. A. Vorobyeva, K. A. Bukunov, A. P. Evseev, D. K. Minnebaev, N. G. Chechenin
Summary: Raman spectrometry is widely used for analyzing multi-walled carbon nanotubes, but it can also cause local heating due to the laser beam. This study observed changes in characteristic peaks of the carbon nanotubes' spectrum by altering laser radiation power, and found that increasing the power reduced the number of defects in the nanotubes.
MOSCOW UNIVERSITY PHYSICS BULLETIN
(2022)
Article
Physics, Multidisciplinary
K. A. Bukunov, E. A. Vorobyeva, N. G. Chechenin
Summary: This article discusses the analysis of Raman scattering spectra for carbon nanotubes and establishing the connection between the observed features and the distribution of structural defects. Using the spectra of multi-walled carbon nanotubes as an example, it presents a complex graphical representation of their spectral features and considers the fundamental aspects of their interpretation. The possibility of comparing the structure of different samples of this nanomaterial using Raman spectroscopy is demonstrated.
MOSCOW UNIVERSITY PHYSICS BULLETIN
(2022)