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Fully Fused Indacenodithiophene-Centered Small-Molecule n-Type Semiconductors for High-Performance Organic Electronics

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Angewandte Chemie 2024年第38期136卷

作者： Tainan Duan Jia Wang Wenrui Shi Yulu Li Kaihuai Tu Xingqi Bi Cheng Zhong Jie Lv Ke Yang Zeyun Xiao Bin Kan Yan Zhao Chongqing Institute of Green and Intelligent Technology Chongqing School University of Chinese Academy of Sciences (UCAS Chongqing) Chinese Academy of Sciences Chongqing 400714 China School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 China Laboratory of Molecular Materials and Devices Department of Materials Science Fudan University Shanghai 200433 China State Key Laboratory and Institute of Elemento-Organic Chemistry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Renewable Energy Conversion and Storage Center (RECAST) College of Chemistry Nankai University Tianjin 300071 China Hubei Key Laboratory on Organic and Polymeric Opto-electronic Materials College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China Hoffmann Institute of Advanced Materials Shenzhen Polytechnic 7098 Liuxian Boulevard Shenzhen 518055 China

Developing novel n-type organic semiconductors is an on-going research endeavour, given their pivotal roles in organic electronics and their relative scarcity compared to p-type counterparts. In this study, a new strategy was employed to synthesize n-type organic semiconductors featuring a fully fused conjugated backbone. By attaching two sets of adjacent amino and formyl groups to the indacenodithiophene-based central cores and triggering a tandem reaction sequence of a Knoevenagel condensation-intramolecular cyclization, DFA1 and DFA2 were realized. The solution-processed organic field effect transistors based on DFA1 exhibited unipolar n-type transport character with a decent electron mobility of ca. 0.10 cm 2 V −1 s −1 (ca. 0.038 cm 2 V −1 s −1 for DFA2 based devices). When employing DFA1 as a third component in organic solar cells, a high power conversion efficiency of 19.2 % can be achieved in ternary devices fabricated with PM6 : L8-BO : DFA1. This work provides a new pathway in the molecular engineering of n-type organic semiconductors, propelling relevant research forward.

关键词： Fully Fused Structure n-Type Organic Semiconductors Single-Crystal Analysis Organic Field-Effect Transistors Organic Solar Cells

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Intercrossed Carbon Nanorings with Pure Surface States as Low‐Cost and Environment‐Friendly Phosphors for White‐Light‐Emitting Diodes†

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Angewandte Chemie 2014年第6期127卷

作者： Xiaoming Li Yanli Liu Xiufeng Song Hao Wang Haoshuang Gu Haibo Zeng State Key Laboratory of Mechanics and Control of Mechanical Structures & College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing (China) Institute of Optoelectronics & Nanomaterials College of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 (China) Collaborative Innovation Center for Advanced Organic Chemical Materials & Faculty of Physics and Electronic Science Hubei University Wuhan 430062 (PR China)

As an important energy‐saving technique, white‐light‐emitting diodes (W‐LEDs) have been seeking for low‐cost and environment‐friendly substitutes for rare‐earth‐based expensive phosphors or Pd 2+ /Cd 2+ ‐based toxic quantum dots (QDs). In this work, precursors and chemical processes were elaborately designed to synthesize intercrossed carbon nanorings (IC‐CNRs) with relatively pure hydroxy surface states for the first time, which enable them to overcome the aggregation‐induced quenching (AIQ) effect, and to emit stable yellow‐orange luminescence in both colloidal and solid states. As a direct benefit of such scarce solid luminescence from carbon nanomaterials, W‐LEDs with color coordinate at (0.28, 0.27), which is close to pure white light (0.33, 0.33), were achieved through using these low‐temperature‐synthesized and toxic ion‐free IC‐CNRs as solid phosphors on blue LED chips. This work demonstrates that the design of surface states plays a crucial role in exploring new functions of fluorescent carbon nanomaterials.

关键词： Kohlenstoff Lumineszenz Nanoringe Oberflächenzustände Weißlicht‐emittierende Dioden

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Two-dimensional picture arrays and Parikh q—matrices

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Journal of Physics: Conference Series 2018年第1期1132卷

作者： Somnath Bera Kalpana Mahalingam Linqiang Pan K. G. Subramanian Key Laboratory of Image Information Processing and Intelligent Control of Education Ministry of China School of Automation Huazhong University of Science and Technology Wuhan 430074 Hubei China Department of Mathematics Indian Institute of Technology Madras Chennai 600036 India School of Electric and Information Engineering Zhengzhou University of Light Industry Zhengzhou 450002 Henan China Department of Mathematics Madras Christian college Tambaram Chennai 600017 India

Based on the idea of 'q—count' of certain subwords of a word and generalizing the notion of Parikh matrix of a word, the notion of Parikh q—matrix of a word over an ordered alphabet was introduced. On the other hand, with a two-dimensional picture array of symbols arranged in rows and columns, two kinds of upper triangular matrices, known as row and column Parikh matrices have also been introduced and investigated. Here combining these two kinds of matrices of a picture array, we introduce row/column Parikh q—matrix of an array, leading to the concept of q—ambiguity of a picture array. Results relating to q—ambiguity of picture arrays are derived in the context of these Parikh q—matrices of arrays.

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Publisher's Note: “Coupling analysis of transient aerodynamic and dynamic response of articulated heavy vehicles under crosswinds” [Phys. Fluids 34, 017106 (2022)]

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Physics of Fluids 2022年第2期34卷

作者： Qianwen Zhang (张倩文) Chuqi Su (苏楚奇) Makoto Tsubokura (坪倉誠) Zhen Hu (胡振) Yiping Wang (汪怡平) 1Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan 430070 China 2Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of Technology Wuhan 430070 China 3Hubei Research Center for New Energy and Intelligent Connected Vehicle Wuhan University of Technology Wuhan 430070 China 4Graduate School of System Informatics Kobe University Kobe Hyogo 657-8501 Japan 5Complex Phenomena Unified Simulation Research Team RIKEN Advanced Institute for Computational Science Kobe Hyogo 650-0047 Japan 6Shanghai Huawei Technology Co. Shanghai 201206 China

This article was originally published online on 7 January 2022 with an incorrect page number. The correct page number is 017106. All online versions of this art

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Strong and Reversible Covalent Double Network Hydrogel Based on Force-Coupled Enzymatic Reactions

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Angewandte Chemie 2022年第25期134卷

作者： Guangxiao He Hai Lei Prof. Wenxu Sun Jie Gu Wenting Yu Di Zhang Huiyan Chen Prof. Ying Li Prof. Meng Qin Bin Xue Prof. Wei Wang Prof. Yi Cao Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State Microstructure Key Laboratory of Intelligent Optical Sensing and Manipulation Ministry of Education Department of Physics Nanjing University Nanjing 210093 China Jinan Microecological Biomedicine Shandong Laboratory Jinan 250021 China School of Public Health and Management Hubei University of Medicine Shiyan 442000 China School of Science Nantong University Nantong 226019 China Institute of Advanced Materials and Flexible Electronics (IAMFE) School of Chemistry and Materials Science Nanjing University of Information Science & Technology Nanjing 210044 China Institute for Brain Sciences Nanjing University Nanjing 210093 China

Biological load-bearing tissues are strong, tough, and recoverable under periodic mechanical loads. However, such features have rarely been achieved simultaneously in the same synthetic hydrogels. Here, we use a force-coupled enzymatic reaction to tune a strong covalent peptide linkage to a reversible bond. Based on this concept we engineered double network hydrogels that combine high mechanical strength and reversible mechanical recovery in the same hydrogels. Specifically, we found that a peptide ligase, sortase A, can promote the proteolysis of peptides under force. The peptide bond can be re-ligated by the same enzyme in the absence of force. This allows the sacrificial network in the double-network hydrogels to be ruptured and rebuilt reversibly. Our results demonstrate a general approach for precisely controlling the mechanical and dynamic properties of hydrogels at the molecular level.

关键词： Double-Network Hydrogels Dynamic Covalent Bonds Force-Coupled Enzymatic Reaction Mechanical Properties Single-Molecule Force Spectroscopy

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Graphene: Room‐Temperature Colossal Magnetoresistance in Terraced Single‐Layer Graphene (Adv. Mater. 37/2020)

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advanced Materials 2020年第37期32卷

作者： Junxiong Hu Jian Gou Ming Yang Ganesh Ji Omar Junyou Tan Shengwei Zeng Yanpeng Liu Kun Han Zhishiuh Lim Zhen Huang Andrew Thye Shen Wee Ariando Ariando NUSNNI National University of Singapore Singapore 117411 Singapore Department of Physics National University of Singapore Singapore 117542 Singapore Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore Singapore 117551 Singapore Institute of Materials Research & Engineering A*STAR (Agency for Science Technology and Research) Singapore 138634 Singapore State Key Laboratory of Mechanics and Control of Mechanical Structures MOE Key Laboratory for Intelligent Nano Materials and Devices and Institute of Nano Science Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

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Nonlinear Behavior of Surface Charge Density and Zeta Potential in Microchannel Electrokinetic Flow

SSRN

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SSRN 2023年

作者： Chen, Daming Arancibia-Miranda, Nicolas Escudey, Mauricio Fu, Jiao Lu, Qin Amon, Cristina H. Galatro, Daniela Guzmán, Amador M. Facultad de Ingeniería Departamento de Ingeniería Mecánica Universidad de Santiago de Chile Av. B. O’Higgins 3363 Santiago9170020 Chile Center for the Development of Nanoscience and Nanotechnology CEDENNA Santiago9170124 Chile Facultad de Química y Biología Universidad de Santiago de Chile Av. B. O’Higgins Santiago3363 Chile Xi'an key laboratory of advanced control and intelligent process Xi'an University of Posts and Telecommunications Xi'An710121 China Solar and Thermal Energy Conversion and Storage Device and System Laboratory STECTEC Santiago Chile Escuela de Ingenieria Industrial Facultad de Ingenieria y Ciencias Universidad Diego Portales Ejercito 441 Santiago Chile Department of Mechanical and Industrial Engineering Faculty of Applied Science and Engineering University of Toronto 5 King’s College Road TorontoON Canada Department of Chemical Engineering and Applied Chemistry Faculty of Applied Science and Engineering University of Toronto 200 College Street TorontoON Canada

In this work, a combined numerical and experimental investigation of the surface charge density and zeta potential behavior is investigated for borosilicate immersed in KCl and NaCl electrolytes and for imogolite immersed in KCl, CaCl2, and MgCl2 electrolytes. Simulations and experiments of the electrokinetic flows with electrolyte solutions were performed to accurately determine the electric double layer (EDL), the zeta potential, and the surface charge density at various electrolyte concentrations and pH. The zeta potential was experimentally determined and numerically predicted by solving the coupled governing equations of mass, species, momentum, and electrical field iteratively. The zeta potential for borosilicate develops strong nonlinear behavior with the ion concentration following a power-law. Likewise, the surface charge density obeys a nonlinear behavior, decreasing as the concentration increases. Moreover, for imogolite, both the zeta potential and the surface charge density behave nonlinearly with the pH. The EDL for borosilicate and imogolite becomes thinner as the electrolyte concentration and pH increase;this behavior is caused by increased surface charge density, resulting in the higher attraction of the free charges. The reported nonlinear behavior describes more accurately the interaction of the nanoparticle surface charge with the electrolytes and its effect on the electrolyte transport properties. © 2023, The Authors. All rights reserved.

关键词： Zeta potential

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Author Correction: Tandem gene duplications contributed to high-level azole resistance in a rapidly expanding Candida tropicalis population

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Nature communications 2024年第1期15卷 587页

作者： Xin Fan Rong-Chen Dai Shu Zhang Yuan-Yuan Geng Mei Kang Da-Wen Guo Ya-Ning Mei Yu-Hong Pan Zi-Yong Sun Ying-Chun Xu Jie Gong Meng Xiao Department of Infectious Diseases and Clinical Microbiology Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China. Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases Department of Laboratory Medicine State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing 100730 China. National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China. Peking University First Hospital - National Institute for Communicable Disease Control and Prevention Joint Laboratory of Pathogenic Fungi Beijing 102206 China. Department of Laboratory Medicine West China Hospital Sichuan University Chengdu 610041 Sichuan China. Department of Clinical Laboratory First Affiliated Hospital of Harbin Medical University Harbin 150001 Heilongjiang China. Department of Clinical Laboratory Jiangsu Province Hospital Nanjing 210029 Jiangsu China. Department of Clinical Laboratory Fujian Medical University Union Hospital Fuzhou 350001 Fujian China. Department of Clinical Laboratory Tongji Hospital Tongji Medical College of Huazhong University of Science and Technology Wuhan 430030 Hubei China. Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases Department of Laboratory Medicine State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing 100730 China. xycpumch@***. National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China. gongjie@icdc.cn. Peking University Firs

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General-purpose machine-learned potential for 16 elemental metals and their alloys

arXiv

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arXiv 2023年

作者： Song, Keke Zhao, Rui Liu, Jiahui Wang, Yanzhou Lindgren, Eric Wang, Yong Chen, Shunda Xu, Ke Liang, Ting Ying, Penghua Xu, Nan Zhao, Zhiqiang Shi, Jiuyang Wang, Junjie Lyu, Shuang Zeng, Zezhu Liang, Shirong Dong, Haikuan Sun, Ligang Chen, Yue Zhang, Zhuhua Guo, Wanlin Qian, Ping Sun, Jian Erhart, Paul Ala-Nissila, Tapio Su, Yanjing Fan, Zheyong Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing Beijing100083 China School of Materials Science and Engineering Hunan University Changsha410082 China MSP group QTF Centre of Excellence Department of Applied Physics Aalto University P.O. Box 15600 Aalto EspooFI-00076 Finland Chalmers University of Technology Department of Physics Gothenburg41926 Sweden National Laboratory of Solid State Microstructures School of Physics Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210093 China Department of Civil and Environmental Engineering George Washington University WashingtonDC20052 United States Department of Electronic Engineering and Materials Science and Technology Research Center The Chinese University of Hong Kong N.T. Shatin999077 Hong Kong Department of Physical Chemistry School of Chemistry Tel Aviv University Tel Aviv6997801 Israel Institute of Zhejiang University-Quzhou Quzhou324000 China College of Chemical and Biological Engineering Zhejiang University Hangzhou310027 China State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Institute for Frontier Science Nanjing University of Aeronautics and Astronautics Nanjing210016 China Department of Mechanical Engineering The University of Hong Kong Pokfulam Road Hong Kong School of Science Harbin Institute of Technology Shenzhen518055 China College of Physical Science and Technology Bohai University Jinzhou121013 China Interdisciplinary Centre for Mathematical Modelling Department of Mathematical Sciences Loughborough University Leicestershire LoughboroughLE11 3TU United Kingdom

Machine-learned potentials (MLPs) have exhibited remarkable accuracy, yet the lack of general-purpose MLPs for a broad spectrum of elements and their alloys limits their applicability. Here, we present a feasible approach for constructing a unified general-purpose MLP for numerous elements, demonstrated through a model (UNEP-v1) for 16 elemental metals and their alloys. To achieve a complete representation of the chemical space, we show, via principal component analysis and diverse test datasets, that employing one-component and two-component systems suffices. Our unified UNEP-v1 model exhibits superior performance across various physical properties compared to a widely used embedded-atom method potential, while maintaining remarkable efficiency. We demonstrate our approach's effectiveness through reproducing experimentally observed chemical order and stable phases, and large-scale simulations of plasticity and primary radiation damage in MoTaVW alloys. This work represents a significant leap towards a unified general-purpose MLP encompassing the periodic table, with profound implications for materials science. Copyright © 2023, The Authors. All rights reserved.

关键词： Radiation damage

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Binary All-polymer Solar Cells with a Perhalogenated-Thiophene-Based Solid Additive Surpass 18 % Efficiency

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Angewandte Chemie 2024年第9期136卷

作者： Wanying Feng Tianqi Chen Yulu Li Dr. Tainan Duan Xue Jiang Dr. Cheng Zhong Yunxin Zhang Jifa Yu Prof. Guanghao Lu Prof. Xiangjian Wan Prof. Bin Kan Prof. Yongsheng Chen School of Materials Science and Engineering National Institute for Advanced Materials Nankai University 300350 Tianjin China State Key Laboratory and Institute of Elemento-Organic Chemistry Frontiers Science Center for New Organic Matter The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Renewable Energy Conversion and Storage Center (RECAST) College of Chemistry Nankai University 300071 Tianjin China Chongqing Institute of Green and Intelligent Technology Chongqing School University of Chinese Academy of Sciences (UCAS Chongqing) Chinese Academy of Sciences 400714 Chongqing China Hubei Key Laboratory on Organic and Polymeric Opto-electronic Materials College of Chemistry and Molecular Sciences Wuhan University 430072 Wuhan China Institute of Science and Technology Xi'an Jiaotong University 710054 Xi'an China

Morphological control of all-polymer blends is quintessential yet challenging in fabricating high-performance organic solar cells. Recently, solid additives (SAs) have been approved to be capable in tuning the morphology of polymer: small-molecule blends improving the performance and stability of devices. Herein, three perhalogenated thiophenes, which are 3,4-dibromo-2,5-diiodothiophene (SA-T1), 2,5-dibromo-3,4-diiodothiophene (SA-T2), and 2,3-dibromo-4,5-diiodothiophene (SA-T3), were adopted as SAs to optimize the performance of all-polymer organic solar cells (APSCs). For the blend of PM6 and PY-IT, benefitting from the intermolecular interactions between perhalogenated thiophenes and polymers, the molecular packing properties could be finely regulated after introducing these SAs. In situ UV/Vis measurement revealed that these SAs could assist morphological character evolution in the all-polymer blend, leading to their optimal morphologies. Compared to the as-cast device of PM6 : PY-IT, all SA-treated binary devices displayed enhanced power conversion efficiencies of 17.4–18.3 % with obviously elevated short-circuit current densities and fill factors. To our knowledge, the PCE of 18.3 % for SA-T1-treated binary ranks the highest among all binary APSCs to date. Meanwhile, the universality of SA-T1 in other all-polymer blends is demonstrated with unanimously improved device performance. This work provide a new pathway in realizing high-performance APSCs.

关键词： All-Polymer Solar Cells Halogenated Thiophene High-Efficiency Morphology Solid Additives

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