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Semitransparent organic photovoltaics enabled by transparent p-type inorganic semiconductor and near-infrared acceptor

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Journal of Energy Chemistry 2024年第9期96卷 351-358页

作者： Xue Yan Jiayu Wang Wei He Top Archie Dela Peña Can Zhu Hailin Yu Yingyue Hu Cenqi Yan Shengqiang Ren Xingyu Chen Zhe Wang Jiaying Wu Mingjie Li Jianlong Xia Lei Meng Shirong Lu Dewei Zhao Mikhail Artemyev Yongfang Li Pei Cheng College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065SichuanChina Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong Kong 999077China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering&Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationSichuan UniversityChengdu 610065SichuanChina Department of Material Science and Technology Taizhou UniversityTaizhou 318000ZhejiangChina Advanced Materials Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400GuangdongChina State Key Laboratory of Advanced Technology for Materials Science and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070HubeiChina Department of Civil1nd Environmental Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China Research Institute for Physical Chemical Problems Belarusian State UniversityMinsk 220006Belarus

Semitransparent organic photovoltaics(STOPVs)have gained wide attention owing to their promising applications in building-integrated photovoltaics,agrivoltaics,and floating *** semiconductors with high charge carrier mobility usually have planar and conjugated structures,thereby showing strong absorption in visible *** this work,a new concept of incorporating transparent inorganic semiconductors is proposed for high-performance ***(I)thiocyanate(CuSCN)is a visible-transparent inorganic semiconductor with an ionization potential of 5.45 eV and high hole *** transparency of CuSCN benefits high average visible transmittance(AVT)of *** energy levels of CuSCN as donor match those of near-infrared small molecule acceptor BTP-eC9,and the formed heterojunction exhibits an ability of exciton *** mobility of CuSCN contributes to a more favorable charge transport channel and suppresses charge *** control STOPVs based on PM6/BTP-eC9 exhibit an AVT of 19.0%with a power conversion efficiency(PCE)of 12.7%.Partial replacement of PM6 with CuSCN leads to a 63%increase in transmittance,resulting in a higher AVT of 30.9%and a comparable PCE of 10.8%.

关键词： Copper(I)thiocyanate Inorganic semiconductor Semitransparent Organic photovoltaics Charge dissociation

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Enhancing compatibility and biodegradability of polylactic acid/biomass composites through torrefaction of forest residue

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Journal of Bioresources and Bioproducts 2025年第1期10卷 51-61页

作者： June-Ho Choi Myeong Rok Ahn Chae-Hwi Yoon Yeon-Su Lim Jong Ryeol Kim Hyolin Seong Chan-Duck Jung Sang-Mook You Jonghwa Kim Younghoon Kim Hyun Gil Cha Jae-Won Lee Hoyong Kim Center for Bio-based Chemistry Korea Research Institute of Chemical Technology(KRICT)Ulsan 44429South Korea Department of Wood Science and Engineering College of Agriculture and Life SciencesChonnam National UniversityGwangju 61186South Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju 61186South Korea

This study investigated the effects of torrefaction on forest residue(FR)and its subsequent ap-plication as a bulk-loading filler in polylactic acid(PLA)*** enhanced the chemical properties of FR,improving its compatibility with PLA,and the crystallinity increased from 24.9%to 42.5%.The process also improved the hydrophobicity of PLA/biomass composites,as demonstrated by the water contact angle of 76.1°,closely matching that of neat PLA(76.4°).With the introduction of 20%modified biomass properties after torrefaction treatment,the tensile strength of PLA/biomass composite increased from 58.7 to 62.3 ***,the addition of torrefied forest residue(TFR)accelerated biodegradation by increasing the onset of degrada-tion and inhibiting *** 90 d,the biodegradability of PLA/biomass composites reached 94.9%,which had a 6.9%increase compared to the neat PLA(88.8%).Overall,this study highlights the potential of torrefaction in enhancing both the physical properties and biodegrad-ability of PLA-based composites,contributing to a more sustainable approach to reducing plastic pollution.

关键词： Forest residue Torrefaction Bulk-loading filler Polylactic acid composite Hydrophobicity Tensile strength Biodegradability

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Enhancing photocatalytic CO_(2)reduction with TiO_(2)-based materials:Strategies,mechanisms,challenges,and perspectives

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Environmental science and Ecotechnology 2024年第4期20卷 18-33页

作者： Zhimin Yuan Xianglin Zhu Xianqiang Gao Changhua An Zheng Wang Cheng Zuo Dionysios D.Dionysiou Hong He Zaiyong Jiang School of Chemistry&Chemical Engineering and Environmental Engineering Weifang UniversityWeifang261061PR China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085PR China Institute for Energy Research School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang212013PR China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin300384PR China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering(DChEE)University of CincinnatiCincinnatiOH45221-0012USA College of Forestry Shandong Agricultural UniversityTaian271018PR China

The concentration of atmospheric CO_(2)has exceeded 400 ppm,surpassing its natural variability and raising concerns about uncontrollable shifts in the carbon cycle,leading to significant climate and environmental impacts.A promising method to balance carbon levels and mitigate atmospheric CO_(2)rise is through photocatalytic CO_(2)*** dioxide(TiO_(2)),renowned for its affordability,stability,availability,and eco-friendliness,stands out as an exemplary catalyst in photocatalytic CO_(2)*** strategies have been proposed to modify TiO_(2)for photocatalytic CO_(2)reduction and improve catalytic activity and product ***,few studies have systematically summarized these strategies and analyzed their advantages,disadvantages,and current ***,we comprehensively review recent advancements in TiO_(2)engineering,focusing on crystal engineering,interface design,and reactive site construction to enhance photocatalytic efficiency and product *** discuss how modifications in TiO_(2)'s optical characteristics,carrier migration,and active site design have led to varied and selective CO_(2)reduction *** enhancements are thoroughly analyzed through experimental data and theoretical ***,we identify current challenges and suggest future research directions,emphasizing the role of TiO_(2)-based materials in understanding photocatalytic CO_(2)reduction mechanisms and in designing effective *** review is expected to contribute to the global pursuit of carbon neutrality by providing foundational insights into the mechanisms of photocatalytic CO_(2)reduction with TiO_(2)-based materials and guiding the development of efficient photocatalysts.

关键词： summarized dioxide neutral

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Recent Advances in Helical Polyisocyanide-based Block Copolymers:Preparation,Self-assembly and Circularly Polarized Luminescence

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chemical Research in Chinese Universities 2023年第5期39卷 719-725页

作者： ZHOU Li CHEN Kun ZHOU Xing-Yu WU Zong-Quan Department of Polymer Science and Engineering School of Chemistry and Chemical EngineeringAnhui Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei 230009P.R.China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012P.R.China

Polyisocyanides and their block copolymers have widespread applications in many fields due to their unique helix and self-assembly *** first,the latest progress in the preparation of helical polyisocyanide-based block copolymers via the method of one-pot sequential controlled synthesis and stepwise polymerization was highlighted in this *** categories of helical polyisocyanide-based copolymers including amphiphilic block copolymers,UV-response block copolymers,π-conjugated block copolymers,etc.,have been prepared ***,recent advances in the self-assembly and circularly polarized luminescence performance of amphiphilic andπ-conjugated helical polyisocyanide-based copolymers have been introduced,*** hope this minireview will not only inspire more interest in developing helical polyisocyanide-based copolymers,but also encourage further progress in the field of building artificial functional materials.

关键词： Helical polyisocyanide Block copolymer Self-assemble Circularly polarized luminescence

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Two-dimensional MXenes:New frontier of wearable and flexible electronics

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InfoMat 2022年第4期4卷 1-28页

作者： Abbas Ahmed Sudeep Sharma Bapan Adak Md Milon Hossain Anna Marie LaChance Samrat Mukhopadhyay Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsConnecticutUSA Advanced Sensor and Energy Research(ASER)Lab Department of Electronic EngineeringKwangwoon UniversitySeoulSouth Korea Department of Textile and Fiber Engineering Indian Institute of TechnologyNew DelhiIndia Department of Textile Engineering Chemistry and ScienceNorth Carolina State UniversityRaleighNorth CarolinaUSA Department of Textile Engineering Khulna University of Engineering&TechnologyKhulnaBangladesh Department of Chemical and Biomolecular Engineering University of ConnecticutStorrsConnecticutUSA

Wearable electronics offer incredible benefits in mobile healthcare monitoring,sensing,portable energy harvesting and storage,human-machine interactions,etc.,due to the evolution of rigid electronics structure to flexible and stretchable ***,transition metal carbides and nitrides(MXenes)are highly regarded as a group of thriving two-dimensional nanomaterials and extraordinary building blocks for emerging flexible electronics platforms because of their excellent electrical conductivity,enriched surface functionalities,and large surface *** article reviews the most recent developments in MXene-enabled flexible electronics for wearable *** MXeneenabled electronic devices designed on a nanometric scale are highlighted by drawing attention to widely developed nonstructural attributes,including 3D configured devices,textile and planer substrates,bioinspired structures,and printed ***,the unique progress of these nanodevices is highlighted by representative applications in healthcare,energy,electromagnetic interference(EMI)shielding,and humanoid control of *** emerging prospects of MXene nanomaterials as a key frontier in nextgeneration wearable electronics are envisioned and the design challenges of these electronic systems are also discussed,followed by proposed solutions.

关键词： flexible electronics MXene nanostructures wearable electronics

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Comparative study of flame retardancy in polyimine vitrimers and composites:Evaluating additive and reactive flame retardants acting via gas-,solid-,and combined-phase mechanisms

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Journal of Materials science & Technology 2024年第29期196卷 101-111页

作者： Andrea Toldy Dániel István Poór Beáta Szolnoki Boglárka Devecser Norbert Geier Ákos Pomázi Department of Polymer Engineering Faculty of Mechanical EngineeringBudapest University of Technology and EconomicsH-1111 BudapestM˝uegyetem rkp.3Hungary MTA-BME Lendület Sustainable Polymers Research Group Muegyetem rkp.3H-1111 BudapestHungary Budapest University of Technology and Economics Faculty of Mechanical EngineeringDepartment of Manufacturing Science and EngineeringMuegyetem rkp.3.Budapest 1111Hungary Department of Organic Chemistry and Technology Faculty of Chemical Technology and BiotechnologyBudapest University of Technology and EconomicsH-1111 BudapestMuegyetem rkp.3Hungary HUN-REN-BME Research Group for Composite Science and Technology Muegyetem rkp.3.H-1111 BudapestHungary

We developed flame retarded polyimine type vitrimers and carbon fibre reinforced composites using two additive and a reactive flame retardant containing phosphorus:ammonium polyphosphate(APP),resorcinol bis(diphenyl phosphate)(RDP);and N,N’,N’’-tris(2-aminoethyl)-phosphoric acid triamide(TEDAP).We characterised the vitrimer matrix materials by differential scanning calorimetry(DSC),thermal analysis(TGA),limiting oxygen index(LOI),UL-94 test and mass loss calorimetry(MLC),while the vitrimer composites by LOI,UL-94 test,MLC and dynamic mechanical analysis(DMA).We compared the performance of the vitrimer systems to a benchmark pentaerythritol-based aliphatic epoxy resin system(PER).The vitrimer reference had higher thermal stability but lower fire performance than the PER aliphatic reference *** lower phosphorus content,the vitrimer systems exhibited a melting above their vitrimer transition temperature,which negatively affected their LOI and UL-94 *** 2%phosphorus content,rapid charring and extinguishing of vitrimers prevented the softening and *** superior performance of these same flame retardants in vitrimer systems could be attributed to the high nitrogen content of imine-based vitrimers in combination with phosphorus flame retardants,exploiting nitrogen-phosphorus *** both matrices,flame retardants with solid phase action lead to better fire performance,while in composites,the lowest peak heat release rates(152 kW/m2 in vitrimer composite)were achieved with RDP acting predominantly in the gas phase,as carbon fibres hindered the intumescent phenomenon.

关键词： Vitrimer Polyimin e Epoxy Carbon fibre polymer composite Flame retardancy

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Effect of Silica Nanoparticle Dispersion on Flexural Strength of Sand Mold with Sodium Silicate Binder

Journal of Korean Institute of Metals and Materials

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Journal of Korean Institute of Metals and Materials 2022年第6期60卷 478-487页

作者： Kim, Panseong Bae, Min A. Baek, Jae Ho Jae, Jung Ho Lee, Man Sig Ulsan44413 Korea Republic of Department of Polymer Science and Chemical Engineering Pusan National University Busan46241 Korea Republic of Daejeon34113 Korea Republic of

Sodium silicate solutions are used as an eco-friendly binder in the casting process. However, the strength of sand molds using the sodium silicate solutions is reduced because of their low humidity resistance. In this study, silica nanoparticles were added to a sodium silicate solution with a constant SiO2/Na2O ratio to improve the humidity resistance of the inorganic binder. The effects of the dissolution times and particle size of the silica on the flexural strength of the molds was also investigated. The physiochemical properties of the inorganic binders were characterized by viscometer, Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). Sand molds for the flexural strength test were prepared by mixing artificial sand and inorganic binders. The addition of silica nanoparticles reduced the viscosity and water evaporation rate of the inorganic binders and improved the humidity resistance of the molds due to an increase in the SiO2/Na2O ratio. The flexural strength of the molds increased as the size of the silica nanoparticles increased, due to formation of discrete silica aggregates with high surface area. However, as the dissolution times of the silica nanoparticles increased, the strength of the molds decreased due to an enhanced Q2/Q3 ratio. Therefore, we suggest that the addition of silica nanoparticles will improve the humidity resistance of molds, and that varying the particle size and dissolution time of the silica nanoparticles affects the strength of the molds. Copyright © The Korean Institute of Metals and Materials.

关键词： Particle size

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Recent progress in the all-solid-state flexible supercapacitors

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SmartMat 2022年第3期3卷 349-383页

作者： Yongrui Yang Tao Zhu Lening Shen Yanghe Liu Dong Zhang Bowen Zheng Keven Gong Jie Zheng Xiong Gong School of Polymer Science and Polymer Engineering The University of AkronAkronOhioUSA Department of Chemical Biomolecular and Corrosion EngineeringThe University of AkronAkronOhioUSA Copley High School CopleyOhioUSA Western Reserve Academy HudsonOhioUSA

In the past few years,supercapacitors(SCs)have attracted great attention in both academic and industrial sectors due to their high energy storage efficiency,reliable stability,and eco-friendly *** solid-state SCs as one of the ongoing focuses for the development of wearable and portable electronics have become the most promising energy storage devices for the smart power system due to their high power density,fast electrochemical response,high efficiency on the charge-discharge process,and excellent electrochemical *** this study,the recent progress in the electrodes and electrolytes used for approaching high-performance of the all-solid-state flexible SCs is *** first introduce basic operational principles of various *** then we overview the electrode materials including carbon materials,conducting polymers,transition metal oxides/chalcogenides/nitrides,MXenes,metal-organic frameworks,covalent-organic frameworks,and the polymer-based solid-state electrolytes in different ***,we summarize recent progress in the development of the all-solid-state flexible SCs and outlook for future research directions.

关键词： electrode materials electrolyte materials flexible supercapacitors solid-state supercapacitors

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Tough,conductive hydrogels with double-network based on hydrophilic polymer assistant well-dispersed carbon nanotube for innovative force sensor

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science China(Technological sciences) 2022年第5期65卷 1160-1168页

作者： CHEN GuoYin GUO Ying HSIAO S.Benjamin HOU Kai ZHU MeiFang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China Department of Chemistry Stony Brook UniversityNew York11794USA

In recent years,conductive hydrogels have become a promising candidate for application in fields such as tissue engineering and flexible electronic devices because of their conductivity,soft and wet ***,the preparation of tough and uniformly conductive hydrogels remains challenging because conductive nanofillers tend to aggregate during hydrogel ***,a hydrophilic polymer assistant dispersion strategy is proposed to fabricate a tough,conductive composite hydrogel with doublenetwork based on well-dispersed carbon nanotubes(CNTs).In particular,A@T_(2.0)/polyacrylamide(PAM)hydrogels showed a tensile strength of 332.9 kPa,elongation of 584.6%,Young’s modulus of 91.5 kPa,and conductivity of 2.765 S m^(-1),and a demonstration was performed to show the strain sensing for health monitoring and *** showed that the fabricated conductive hydrogels offer promising and broad insights in the field of wearable sensors for health monitoring,innovative electronics,and human-machine interactions.

关键词： alginate carbon nanotubes conductive hydrogel tough force sensing

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Bibliometric Analysis of Trends and Directions in Machine Learning Applied to FinTech 4

Bibliometric Analysis of Trends and Directions in Machine Le...

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4th International Conference on Electronic and Electrical engineering and Intelligent System, ICE3IS 2024

作者： Arif, Erman Suherman, Suherman Widodo, Aris Puji Doctoral Program of Information System School of Postgraduate Studies Diponegoro University Semarang Indonesia Diponegoro University Faculty of Engineering Department of Chemical Engineering Semarang Indonesia Diponegoro University Faculty of Science and Mathematics Department of Informatics Semarang Indonesia

ISBN: (纸本)9798350378368

Our article presents a comprehensive analysis of trends and directions in the application of machine learning in the FinTech sector. By utilizing data from academic databases such as Scopus, our objective is to showcase the advancements in this interdisciplinary research area. The study identifies key trends, influential authors, leading journals, and significant collaborative networks that shape the field. The methodology employed involves quantitative bibliometric analysis to evaluate publications from the past five years. The results indicate a substantial increase in the number of studies during this period, highlighting the importance of machine learning in addressing critical financial challenges, including fraud detection, algorithmic trading, credit scoring, and risk management. Additionally, we delve into the main themes, countries, and institutions that dominate the current research agenda. This analysis provides valuable insights into the present state and future direction of machine learning in FinTech, serving as a resource for researchers and practitioners seeking to comprehend and contribute to this dynamic and rapidly evolving field. We also discuss implications for future research, emphasizing the necessity for continuous innovation and interdisciplinary collaboration to maximize the potential of machine learning in transforming financial services. © 2024 IEEE.

关键词： Adversarial machine learning

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