Article
Chemistry, Applied
Anil Reddy Marri, Heather Flint, Elizabeth A. Gibson, John Fielden
Summary: Three new thiophenyl bridged triarylamine-donor based dyes with pyridyl anchoring groups and indolium acceptors have been synthesized and studied. Phenylpyridyl anchored bis-indolium showed the best performance.
Review
Chemistry, Physical
Dheeraj Devadiga, M. Selvakumar, Prakasha Shetty, M. S. Santosh
Summary: Dye-sensitized solar cells are an efficient method of converting energy and have the potential to be a future energy source. Integration with rechargeable energy storage systems has addressed the issue of power output in photovoltaic conversion systems.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Jianfei Lin, Yinglin Wang, Yanan Li, Yuming Shi, Xin Guo, Lingling Wang, Yichun Liu, Xintong Zhang
Summary: By using a chemical cross-linking strategy, high-performance quasi-solid-state DSSCs based on copper have been successfully fabricated. This strategy effectively reduces the crystallinity of polymers inside the gel polymer electrolytes, improving the diffusion coefficient and enhancing the photovoltaic efficiency and open-circuit voltage of the cells.
Article
Engineering, Electrical & Electronic
Subhrajit Konwar, Pramod K. Singh, Pawan Dhapola, Abhimanyu Singh, Serguei V. Savilov, Muhd Zu Azhan Yahya, Sirin Siyahjani Gultekin, Burak Gultekin
Summary: This paper deals with the synthesis, characterization, and application of low-viscosity ionic liquids as dopants and biopolymers as the host. The ionic liquid enhances the ionic conductivity and thermal stability of the biopolymer electrolyte, leading to the development of highly conducting ionic-liquid-doped biopolymer electrolyte-based devices such as electrochemical double-layer capacitors and dye-sensitized solar cells.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Review
Chemistry, Inorganic & Nuclear
Garima Dwivedi, Guncha Munjal, Ashok N. Bhaskarwar, Amita Chaudhary
Summary: This paper reviews the feasibility of using polyaniline and its composites as a counter-electrode catalyst in dye-sensitized solar cells (DSSCs), as well as its applications as a hole conductor and catalyst for photosensitized electrolytes. It also discusses the efficiency of polyaniline-based solar cells and the recent advances in using it as a suitable replacement for platinum.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Electrochemistry
Jeanet Conradie
Summary: This mini review briefly discusses the developments on the application of polypyridyl-based copper complexes in dye-sensitized solar cells (DSSCs). Copper complexes can be used as dye sensitizers and/or as redox mediators in DSSCs. The abundance and low cost of copper make it a cheaper and non-toxic alternative to the commonly used iodide/triiodide electrolyte redox couple and the expensive and rare ruthenium-based dyes.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Applied
David Moe Almenningen, Henrik Erring Hansen, Audun Formo Buene, Bard Helge Hoff, Odd Reidar Gautun
Summary: To achieve high photocurrents, it is essential for dye-sensitized solar cells (DSSC) to effectively absorb sunlight. This study investigates the use of oligothiophene pi-spacers in triarylamine dyes and assesses their suitability for modern copper based DSSC devices. The results show that the dye with the smallest pi-spacer, dithieno[3,2-b:2',3' -d]thiophene, exhibited the highest efficiency. The DSSC device sensitized by this dye achieved a power conversion efficiency of 4.4%. Additionally, thinner TiO2 layers were found to result in better DSSC performance for all the dyes tested.
Article
Chemistry, Physical
Carolina Hora, Fatima Santos, Maria Goreti Ferreira Sales, Dzmitry Ivanou, Adelio Miguel Mendes
Summary: This study investigates the optimization of dye-sensitized solar cells (DSSCs) for indoor applications and explores the impact of various factors on charge transfer, recombination, and photovoltaic response. The optimized DSSCs demonstrate great potential as efficient indoor photovoltaics and back-illuminated devices.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Fatima Santos, Dzmitry Ivanou, Adelio Mendes
Summary: Dye-sensitized solar cells (DSSCs) have unique features such as colorfulness, potential transparency, flexibility, and low cost, suitable for indoor and outdoor applications. However, compared to conventional DSSCs, MDSSCs have lower power conversion efficiencies.
MATERIALS TODAY COMMUNICATIONS
(2022)
Review
Materials Science, Multidisciplinary
Laura Manceriu, Anil Kumar Bharwal, Nathan Daem, Jennifer Dewalque, Pierre Colson, Frederic Boschini, Rudi Cloots
Summary: Dye-sensitized solar cells (DSSCs) are a promising solution for portable electronics and IoT applications due to their low-cost fabrication and high efficiency. However, the main obstacle to their large-scale exploitation is their limited long-term stability caused by liquid electrolytes. This review summarizes advances in alternative polymer electrolytes, with a focus on polysiloxane-based poly(ionic liquid)s, and evaluates their behavior in DSSCs. The assessment of printability for liquid and gel polymer electrolytes, particularly polysiloxane-based electrolytes, is also discussed.
Review
Chemistry, Multidisciplinary
Zhemin Li, Qizhao Li, Chengjie Li, Yongshu Xie
Summary: Dye-sensitized solar cells (DSSCs) have the advantages of environmental friendliness, easy fabrication, and rich colors, making them promising for applications in architectural decoration and power supply for low energy devices. However, porphyrin dyes used in DSSCs still suffer from absorption defects and aggregation tendencies. In order to address these issues, various approaches have been developed to achieve panchromatic absorption and high efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Polymer Science
Huda Abdullah, Savisha Mahalingam, Nur Aisyah Abu Bakar, Abreeza Manap, Mohd Hafiz Dzarfan Othman, Md Akhtaruzzaman
Summary: The addition of Fe2O3 can improve the efficiency of DSSC, however, an excessive amount can impede electron transport. The optimal concentration is found to be 0.2% for efficient performance.
Article
Chemistry, Physical
Shanmuganathan Venkatesan, Nguyen Huong Tra My, Hsisheng Teng, Yuh-Lang Lee
Summary: Thin films of solid-state polymer electrolytes (SSPEs) have been developed for dye-sensitized solar cells (DSCs) for the first time. Gel-electrolytes are prepared by utilizing a blend of poly(ethylene oxide) (PEO)/polyethylene glycol (PEG) and an acetonitrile-based iodide liquid electrolyte, and then cast onto a glass substrate to fabricate solvent-free SSPEs by evaporating the solvent. The SSPE films are sandwiched between photoelectrodes and counter electrodes to assemble the solid-state DSCs, and the PCE can be improved by introducing TiO2 nanofillers in the SSPEs. The high stability of the solid-state DSCs is demonstrated with a retention of 98% of their original efficiency after a 700-hour test period.
JOURNAL OF POWER SOURCES
(2023)
Review
Biochemistry & Molecular Biology
Alessia Colombo, Claudia Dragonetti, Dominique Roberto, Francesco Fagnani
Summary: Copper complexes have shown great potential as convenient and cheap alternatives to traditional ruthenium dyes in DSSCs, also acting as redox mediators to address issues related to the I-3(-)/I- redox couple. Their impact in the design of eco-sustainable DSSCs has been significant.
Review
Chemistry, Physical
Mikko Kokkonen, Parisa Talebi, Jin Zhou, Somayyeh Asgari, Sohail Ahmed Soomro, Farid Elsehrawy, Janne Halme, Shahzada Ahmad, Anders Hagfeldt, Syed Ghufran Hashmi
Summary: This paper reviews the recent progress in DSSC research to achieve high photovoltaic efficiency and performance stability under typical indoor conditions by developing new device structures, alternative redox shuttles, solid-state hole conductors, TiO2 photoelectrodes, catalyst materials, and sealing techniques. It proposes a scalable cell fabrication process that integrates these developments to a new monolithic cell design based on several features. Finally, the need to design new stability testing protocols to assess the probable deployment of DSSCs in portable electronics and internet-of-things devices is discussed.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Makoto Yonenaga, Yusuke Kaiwa, Kouki Oka, Kenichi Oyaizu, Kenji Miyatake
Summary: A proof-of-concept study was conducted on an all-solid-state rechargeable air battery using redox-active 2,5-dihydroxy-1,4-benzoquinone (DHBQ), its polymer (PDBM) and a proton-conductive polymer (Nafion). The battery showed good performance with DHBQ in the redox reaction at 0.47 and 0.57 V vs. RHE, similar to that in acid aqueous solution. The discharge capacity was significantly improved with the use of PDBM due to the enhanced utilization of the redox-active moieties.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
Kan Hatakeyama-Sato, Karin Sadakuni, Kan Kitagawa, Kenichi Oyaizu
Summary: Redox targeting reaction is an emerging idea for boosting the energy density of redox-flow batteries. This study reports the development of 4 V-class organic polymer mediators using thianthrene derivatives, which have higher potentials compared to conventional organic mediators. The successful mediation cycles observed in this study indicate the potential for designing particle-based redox targeting systems with porous separators for higher energy density and lower cost.
SCIENTIFIC REPORTS
(2023)
Article
Green & Sustainable Science & Technology
Jin-Chieh Ho, Kan Hatakeyama-Sato, Akinari Chiba, Masaki Hayashi, Yuto Igarashi, Kenichi Oyaizu, Wen-Chang Chen
Summary: In the past decade, there has been gradual development in fully stretchable semiconductors. However, the complex cell configurations have hindered the development of stretchable batteries. To overcome this, a fully stretch-rechargeable battery with a sandwich configuration is fabricated. This study is expected to open up new horizons for e-skin and stretchable electronic fields.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Materials Science, Multidisciplinary
Seigo Watanabe, Hiromichi Nishio, Teru Takayama, Kenichi Oyaizu
Summary: Dihydroxy-substituted poly(phenylene sulfide) (DOHPPS) was synthesized by oxidative polymerization of bis(2,6-dimethoxyphenyl) disulfide and subsequent deprotection. The polymer exhibited visible transparency and an ultrahigh refractive index (nD = 1.85) due to the synergistic effect of multiple-hydrogen-bond cross-links and the rigidity of the thiophenylene backbone.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Megumi Kojima, Lyufei Xue, Kenichi Oyaizu, Hiroyuki Nishide, Takeo Suga
Summary: Due to their high power conversion efficiencies, all-perovskite tandem solar cells, with an inorganic CsPbI2Br perovskite as the front photovoltaic cell, have attracted significant attention recently. A dopant-free poly-(3-butylthiophene) has been identified as an effective hole-extracting and -transporting material on the inorganic perovskite layer compared to conventional poly-(3-hexyl- and -octyl-thiophene)-s. Surface passivation of the perovskite layer using alkyl ammonium bromide, particularly butyl-one, has further improved the efficiency and durability. This study focuses on the matching of alkyl chain lengths for poly-(3-alkylthiophene) and alkyl ammonium salt at the interface of the hole-extracting and passivated perovskite layers.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Kan Hatakeyama-Sato, Kenichi Oyaizu
Summary: Persistent radicals possess unique molecular properties, such as open-shell structures and fast reversible redox reactions. Electrochemical aspects of persistent radicals, including redox potentials, bistability, and kinetic constants for electrode reactions and electron self-exchange reactions, are discussed. Radical polymers with accumulated redox sites exhibit distinct charge transport and storage properties. Persistent radical molecules have great potential for various electrochemical applications.
Article
Chemistry, Multidisciplinary
Kan Hatakeyama-Sato, Yasuei Uchima, Takahiro Kashikawa, Koichi Kimura, Kenichi Oyaizu
Summary: Data-driven optimal structure exploration is a popular topic in materials for energy-related devices. However, the accuracy of material property prediction and the vast exploration space for candidate structures pose challenges. We propose a data trend analysis system for materials using quantum-inspired annealing, which combines decision tree and quadratic regression algorithms to learn structure-property relationships. The system explores ideal solutions to maximize properties using a Fujitsu Digital Annealer, a unique hardware that extracts promising solutions from the search space. Experimental validation on solid polymer electrolytes for solid-state lithium-ion batteries demonstrates the system's effectiveness, with a new trithiocarbonate polymer electrolyte offering high conductivity even in a glassy state. Molecular design through data science enables accelerated exploration of functional materials for energy-related devices.
Article
Polymer Science
Kouki Oka, Yusuke Kaiwa, Kazuki Kobayashi, Yuka Tobita, Kenichi Oyaizu
Summary: A new quaternized polymer was synthesized by introducing butanediol into poly(allylamine) and converting the remaining amino groups into quaternary ammonium cations. The hydrophilicity and electrostatic repulsion of the polymer accelerated the dehydrogenation of butanediol. The reaction rate was one order of magnitude higher than that in single molecules.
Article
Chemistry, Multidisciplinary
Kan Hatakeyama-Sato, Yasuhiko Igarashi, Takahiro Kashikawa, Koichi Kimura, Kenichi Oyaizu
Summary: QCL is an emerging regression algorithm based on the rules of quantum mechanics, suitable for data processing in chemo- and materials-informatics. It can handle linear and non-linear functions on small datasets and outperform conventional algorithms in prediction accuracy.
Article
Chemistry, Multidisciplinary
Kan Hatakeyama-Sato, Seigo Watanabe, Naoki Yamane, Yasuhiko Igarashi, Kenichi Oyaizu
Summary: Materials informatics and cheminformatics face challenges due to data scarcity, hindering the study of structure-property relationships. We propose using GPT-4 language model to select explanatory variables and address the issues caused by data scarcity and the Ugly Duckling theorem.
Article
Chemistry, Multidisciplinary
Seigo Watanabe, Hiromichi Nishio, Kenichi Oyaizu
Summary: This paper reports a facile synthesis method for telechelic poly(phenylene sulfide)s through the Friedel-Crafts type electrophilic substitution of the poly(phenylene sulfide) precursors and the halogenated electron-deficient aromatic sulfonium cation.
Article
Polymer Science
Seigo Watanabe, Teru Takayama, Kenichi Oyaizu
Summary: Researchers have discovered that poly(phenylene sulfide) derivatives exhibit a balanced combination of ultrahigh refractive index and Abbe number due to the synergistic effect of high molar refraction and dense intermolecular hydrogen bonds. This new strategy is expected to contribute to the development of high-refractive-index polymers with refractive indices and Abbe numbers beyond the existing threshold.
Article
Electrochemistry
Kan Hatakeyama-Sato, Choitsu Go, Tomoki Akahane, Takahiro Kaseyama, Takuji Yoshimoto, Kenichi Oyaizu
Summary: Quadruply fused aromatic heterocycles are investigated as 4 V-class organic cathode-active materials. The newly synthesized substituted polymer exhibits reversible charge/discharge behavior at high potentials and maintains a long cycle life. The structure of the polymer and the radical spin configuration in the heterocycles are crucial for enhancing voltage and cycle life.
BATTERIES & SUPERCAPS
(2022)
Article
Polymer Science
Seigo Watanabe, Teru Takayama, Hiromichi Nishio, Kanta Matsushima, Yoko Tanaka, Seiya Saito, Yushun Sun, Kenichi Oyaizu
Summary: Highly refractive, thermostable, and transparent poly(phenylene sulfide) derivatives partially including S=O bonds were prepared and exhibited improved transparency and glass-transition temperature while maintaining a high refractive index.
Article
Materials Science, Multidisciplinary
Kouki Oka, Miho Kataoka, Hiroyuki Nishide, Kenichi Oyaizu
Summary: This study proposes a polymeric hydrogen carrier with 2,3-diphenylquinoxaline as a hydrogen storage unit, which achieves rapid dehydrogenation through the introduction of phenyl group. The researchers successfully synthesized polymers with high molecular weight and demonstrated their reversible hydrogenation/dehydrogenation ability.
MRS COMMUNICATIONS
(2022)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.
