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Dual‑Donor‑Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

Nano-Micro Letters 2025年第3期17卷 376-388页

作者： Anhai Liang Yuqing Sun Sein Chung Jiyeong Shin Kangbo Sun Chaofeng Zhu Jingjing Zhao Zhenmin Zhao Yufei Zhong Guangye Zhang Kilwon Cho Zhipeng Kan Center On Nanoenergy Research Institute of Science and Technology for Carbon Peak&NeutralitySchool of Physical Science&TechnologyGuangxi UniversityNanning 530004People’s Republic of China Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673South Korea College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118People’s Republic of China Zhejiang Engineering Research Center for Fabrication and Application of Advanced Photovoltaic Materials School of Materials Science and EngineeringNingboTech UniversityNingbo 315100People’s Republic of China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning 530004People’s Republic of China

Trap-assisted charge recombination is one of the primary limitationsof restricting the performance of organic solar cells. However, effectivelyreducing the presence of traps in the photoactive layer remains ***, wide bandgap polymer donor PTzBI-dF is demonstrated as an effectivemodulator for enhancing the crystallinity of the bulk heterojunction active layerscomposed of D18 derivatives blended with Y6, leading to dense and orderedmolecular packings, and thus, improves photoluminescence quenching *** a result, the photovoltaic devices exhibit reduced trap-assisted charge recombinationlosses, achieving an optimized power conversion efficiency of over 19%.Besides the efficiency enhancement, the devices comprised of PTzBI-dF as athird component simultaneously attain decreased current leakage, improved chargecarrier mobilities, and suppressed bimolecular charge recombination, leading toreduced energy losses. The advanced crystalline structures induced by PTzBI-dFand its characteristics, such as well-aligned energy level, and complementaryabsorption spectra, are ascribed to the promising performance *** findings suggest that donor phase engineering is a feasible approach to tuning the molecular packings in the active layer, providingguidelines for designing effective morphology modulators for high-performance organic solar cells.

关键词： Trap-assisted charge recombination Photoluminescence Miscibility Current leakage Power conversion efficiency

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Recent Advances on Challenges and Strategies of Manganese Dioxide Cathodes for Aqueous Zinc-Ion Batteries

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Energy & Environmental Materials 2023年第6期6卷 158-181页

作者： Yuhui Xu Gaini Zhang Jingqian Liu Jianhua Zhang Xiaoxue Wang Xiaohua Pu Jingjing Wang Cheng Yan Yanyan Cao Huijuan Yang Wenbin Li Xifei Li Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation Institute of Advanced Electrochemical Energy&School of Materials Science and Engineering Xi'an University of TechnologyXi'an 710048China Engineering Research Center of Conducting Materials and Composite Technology Ministry of EducationXi'an 710048China Center for International Cooperation on Designer Low-carbon&Environmental Materials(CDLCEM) Zhengzhou UniversityZhengzhou 450001China

Aqueous zinc-ion batteries(AZIBs)are regarded as promising electrochemical energy storage devices owing to its low cost,intrinsic safety,abundant zinc reserves,and ideal specific *** with other cathode materials,manganese dioxide with high voltage,environmental protection,and high theoretical specific capacity receives considerable ***,the problems of structural instability,manganese dissolution,and poor electrical conductivity make the exploration of high-performance manganese dioxide still a great challenge and impede its practical ***,zinc storage mechanisms involved are complex and somewhat *** address these issues,tremendous efforts,such as surface engineering,heteroatoms doping,defect engineering,electrolyte modification,and some advanced characterization technologies,have been devoted to improving its electrochemical performance and illustrating zinc storage *** this review,we particularly focus on the classification of manganese dioxide based on crystal structures,zinc ions storage mechanisms,the existing challenges,and corresponding optimization strategies as well as structure-performance *** the final section,the application perspectives of manganese oxide cathode materials in AZIBs are prospected.

关键词： aqueous zinc-ion batteries challenges manganese dioxide optimized strategies zinc storage mechanisms

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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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Large enhancement of magnetocaloric effect induced by dual regulation effects of hydrostatic pressure in Mn_(0.94)Fe_(0.06)NiGe compound

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Journal of Materials science & technology 2022年第19期114卷 73-80页

作者： He Zhou Dekun Wang Zhe Li Junzhuang Cong Ziyuan Yu Shuo Zhao Peng Jiang Daoyong Cong Xinqi Zheng Kaiming Qiao Hu Zhang School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China College of Physics and Electronic Engineering Key Laboratory for Advanced Functional and Low Dimensional Materials of Yunnan Higher Education InstituteQujing Normal UniversityQujing 655011China MultiFields Technologies(Beijing)Co.Ltd. Beijing 100190China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

MM'X(M,M'=transition metals,X=carbon or boron group elements)compounds could exhibit large magnetocaloric effect due to the magnetostructural transition,and the composition regulation has been widely studied to realize the magnetostructural ***,the magnetostructural transition is also sensitive to the ***,the effect of hydrostatic pressure on magnetostructural transformation and magnetocaloric effect has been investigated in Mn_(0.94)Fe_(0.06)NiGe *** regulation effect of lowering structural transition temperature and strengthening ferromagnetic(FM)state of martensite is realized by applying hydrostatic pressure,which would greatly improve the magnetocaloric effect of Mn_(0.94)Fe_(0.06)NiGe ***,the first-principles calculations have also been performed to discuss the origin of the regulation effect under hydrostatic pressure,and it indicates that the hydrostatic pressure can stabilize the hexagonal structure and decrease the structural transition *** maximum isothermal entropy change increases by 109%from 4.3 J/(kg K)under 0 GPa to 9.0 J/(kg K)under 0.402 GPa for a magnetic field change of 0-3 *** work proves that the hydrostatic pressure is an effective method to regulate the magnetostructural transition and enhance magnetocaloric effect in MM'X compounds.

关键词： Magnetocaloric effect Magnetostructural transition Hydrostatic pressure Magnetic properties

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Site-Selective Polyolefin Hydrogenolysis on Atomic Ru for Methanation Suppression and Liquid Fuel Production

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Research 2023年第3期6卷 423-432页

作者： Mingyu Chu Xianpeng Wang Xuchun Wang Xiangxi Lou Congyang Zhang Muhan Cao Lu Wang Youyong Li Sibao Liu Tsun-Kong Sham Qiao Zhang Jinxing Chen Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesJoint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123P.R.China Department of Chemistry University of Western OntarioLondonOntario N6A 5B7Canada Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Catalytic hydrogenolysis of end-of-life polyolefins can produce value-added liquid fuels and therefore holds great promises in plastic waste reuse and environmental *** major challenge limiting the recycling economic benefit is the severe methanation(usually>20%)induced by terminal C–C cleavage and fragmentation in polyolefin ***,we overcome this challenge by demonstrating that Ru single-atom catalyst can effectively suppress methanation by inhibiting terminal C–C cleavage and preventing chain fragmentation that typically occurs on multi-Ru *** Ru single-atom catalyst supported on CeO_(2)shows an ultralow CH_(4)yield of 2.2%and a liquid fuel yield of over 94.5%with a production rate of 314.93 gfuels gRu^(−1)h^(−1)at 250℃for 6 *** remarkable catalytic activity and selectivity of Ru single-atom catalyst in polyolefin hydrogenolysis offer immense opportunities for plastic upcycling.

关键词： catalyst olefin fragmentation

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Mechanisms and Mitigation Strategies of Gas Generation in Sodium-Ion Batteries

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Nano-Micro Letters 2025年第8期17卷 17-48页

作者： Xingyan Li Xi Chen Meng Li Haoran Wei Xuming Yang Shenghua Ye Liewu Li Jing Chen Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Xiangtong Meng Jieshan Qiu Biwei Xiao Qianling Zhang Jiangtao Hu Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology Foshan 528051GuangdongPeople’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China College of Chemical Engineering State Key Laboratory of Organic-Inorganic CompositesState Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

The transition to renewable energy sources has elevated the importance of SIBs(SIBs)as cost-effective alternatives to lithium-ion batteries(LIBs)for large-scale energy *** review examines the mechanisms of gas generation in SIBs,identifying sources from cathode materials,anode materials,and electrolytes,which pose safety risks like swelling,leakage,and *** such as CO_(2),H_(2),and O_(2) primarily arise from the instability of cathode materials,side reactions between electrode and electrolyte,and electrolyte decomposition under high temperatures or *** mitigation strategies,encompassing electrolyte design,buffer layer construction,and electrode material optimization,are deliberated ***,subsequent research endeavors should prioritize long-term high-precision gas detection to bolster the safety and performance of SIBs,thereby fortifying their commercial viability and furnishing dependable solutions for large-scale energy storage and electric vehicles.

关键词： Sodium-ion batteries Gas evolution mechanism Inhibition strategies of gas generation High-performance sodium-ion battery roadmap

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A universal strategy for achieving dual cross-linked networks to obtain ultralong polymeric room temperature phosphorescence

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science China Chemistry 2023年第4期66卷 1161-1168页

作者： Yifan Niu Yan Guan Chunye Long Chaofan Ren Jiwen Lu Chanjuan Jin Ping Wang Xinghe Fan He-Lou Xie Key Laboratory of Environment-friendly Chemistry and Application of Ministry of Education Key Laboratory of Polymeric Materials and Application Technology of Hunan Province and Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan ProvinceCollege of ChemistryXiangtan UniversityXiangtan 411105China Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Efficient polymeric room-temperature phosphorescence(PRTP)with excellent processability and flexibility is highly desirable but still faces formidable ***,a general strategy is developed for efficient PRTP through photo-polymerization of phosphor monomers and N-isopropylacrylamide(NIPAM)spontaneously without a *** ultralong lifetime of 3.54 s with afterglow duration time of 25 s and decent phosphorescent quantum efficiency of 13%are *** efficient PRTP has been demonstrated to be derived from the synergistic effect of the covalent and hydrogen bonds networks formed through photo-polymerization of *** electron paramagnetic resonance(EPR)spectra confirmed that methyl radicals are generated under the irradiation of ultraviolet light and promote the formation of covalent cross-linking *** strategy has also been proved to be generalizable to several other phosphor ***,the polymer films display ultrahigh temperature resistance with long afterglows even at 140℃ and unexampled ultralong lifetime of 2.45 s in aqueous *** work provides a simple and feasible avenue to obtain efficient PRTP.

关键词： universal strategy ultralong polymeric room temperature phosphorescence dual cross-linked networks photopolymerization crosslinker

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Molecular Conformational Isomerization:An Efficient Way to Design Novel Emitters with Dual-Thermally Activated Delayed Fluorescence Characteristics and Their Optoelectronic and Bioimaging Applications

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CCS Chemistry 2024年第4期6卷 912-922页

作者： Yi-Zhong Shi Ya-Fang Xiao Hao Wu Shao-Li Zhang Xiao-Chun Fan Ye Tian Chang-Qing Ye Kai Wang Jia Yu Chun-Sing Lee Xiao-Hong Zhang School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009 Institute of Functional Nano and Soft Materials(FUNSOM) Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123Jiangsu Center of Super-Diamond and Advanced Films(COSDAF) Department of ChemistryCity University of Hong KongHong Kong SAR School of Biomedical Engineering The Second Affiliated HospitalGuangzhou Medical UniversityGuangzhou 510260 Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow UniversitySuzhou 215123Jiangsu Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123Jiangsu

Single-molecule luminophores with dual-thermally activated delayed fluorescence(TADF)properties are receiving increasing ***,how to achieve these goals requires more in-depth ***,we demonstrate a novel example emitter,10-(5-(2-(pyridin-3-yl)-[4,5′-bipyrimidin]-6-yl)pyridin-2-yl)-10Hphenoxazine(PmPy-PXZ),enabling dual-TADF properties due to its key feature of conformational *** a pyridine bridge can greatly reduce the steric hindrance and facilitate dual-stable conformations in the ground state,where the quasi-axial(QA)forms ***,unlike previously reported TADF molecules with dual confirmations,both theoretical and experimental measurements show that not only the quasi-equatorial(QE)forms but also the QA forms exhibit distinct TADF characteristics,which can be attributed to an additional higher reverse intersystem crossing *** is the first time that dual-TADF properties of single molecules have been achieved based on conformational *** applications in“self-doping”organic light-emitting diode and biomedical imaging have further been *** these results show the good potential of such dual-band TADF emitters based on molecular conformational isomerization.

关键词： dual-thermally activated delayed fluorescence conformational isomerization organic light-emitting diode biomedical imaging self-doping

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Efficient screening framework for organic solar cells with deep learning and ensemble learning

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npj Computational Materials 2023年第1期9卷 295-305页

作者： Hongshuai Wang Jie Feng Zhihao Dong Lujie Jin Miaomiao Li Jianyu Yuan Youyong Li Institute of Functional Nano&Soft Materials(FUNSOM) Soochow University199 Ren’ai RoadSuzhou 215123 JiangsuPR China Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow University199 Ren-Ai RoadSuzhou Industrial ParkSuzhouJiangsu 215123PR China School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123 JiangsuPR China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa999078 MacaoSARChina

Organic photovoltaics have attracted worldwide interest due to their unique advantages in developing low-cost,lightweight,and flexible power *** molecular design and synthesis have been put forward to accelerate the discovery of ideal organic ***,it is extremely expensive to conduct experimental screening of the wide organic compound *** we develop a framework by combining a deep learning model(graph neural network)and an ensemble learning model(Light Gradient Boosting Machine),which enables rapid and accurate screening of organic photovoltaic *** framework establishes the relationship between molecular structure,molecular properties,and device *** framework evaluates the chemical structure of the organic photovoltaic molecules directly and *** it does not involve density functional theory calculations,it makes fast *** reliability of our framework is verified with data from previous reports and our newly synthesized organic *** work provides an efficient method for developing new organic optoelectronic materials.

关键词： materials ensemble verified

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Yarn-based superhydrophobic wearable sensors for ammonia gas detection at room temperature

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Frontiers of Materials science 2025年第1期19卷 51-62页

作者： Hao Zhao Tao Yang Hao-Kai Peng Hai-Tao Ren Bing-Chiuan Shiu Jia-Horng Lin Ting-Ting Li Ching-Wen Lou School of Textile Science and Engineering Tiangong UniversityTianjin 300387China Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials Tiangong UniversityTianjin 300387China College of Materials and Chemical Engineering Minjiang UniversityFuzhou 350108China Advanced Medical Care and Protection Technology Research Center College of Textile and ClothingQingdao UniversityQingdao 266071China Shaoxing Keqiao Institute of Tiangong University Shaoxing 312030China

Conventional metal-oxide-semiconductor(MOS)gas sensors are limited in wearable gas detection due to their non-flexibility,high operating temperature,and less *** this study,a yarn-based superhydrophobic flexible wearable sensor for room-temperature ammonia gas detection was prepared based on the nano-size effect of both nanocore yarns prepared through electrostatic spinning and MOS gas-sensitive materials synthesized via a two-step hydrothermal synthesis *** yarn sensor has a response sensitivity of 13.11 towards 100 ppm(1 ppm=10^(−6))ammonia at room temperature,a response time and a recovery time of 36 and 21 s,respectively,and a detection limit as low as 10 ppm with the sensitivity of up to 4.76 towards *** addition,it displays commendable linearity within the concentration range of 10‒100 ppm,accompanied by remarkable selectivity and stability,while the hydrophobicity angle reaches 155.74°.Furthermore,its sensing performance still maintains stability even after repeated bending and prolonged *** sensor also has stable mechanical properties and flexibility,and can be affixed onto the fabric surface through sewing,which has a specific potential for clothing use.

关键词： ammonia sensor superhydrophobicity metal oxide semiconductor flexible wearable sensor

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