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An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

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Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi Zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li Long Ye Lijian Zuo Ke Gao Key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State Key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

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Mechanical Properties and Damage Tolerance of Bulk Yb_3Al_5O_(12) Ceramic

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Journal of Materials science & technology 2015年第4期31卷 369-374页

作者： Xiaofei Wang Huimin Xiang Xin Sun Jiachen Liu Feng Hou Yanchun Zhou Science and Technology of Advanced Functional Composite Laboratory Aerospace Research Institute of Materials and Processing Technology Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin University

Yb3Al5O12has potential applications as thermal barrier coatings（TBCs） because it shows low thermal conductivity and close thermal expansion coefficient to nickel-based *** a prospective TBC material,besides superior thermal properties,the mechanical properties are also *** this paper,we present the mechanical properties of Yb3Al5O12including elastic moduli,hardness,strength,and fracture *** Young’s modulus of Yb3Al5O12is 282 *** shear-modulus-to-bulkmodulus ratio of Yb3Al5O12is 0.63,which indicates relatively low shear deformation *** addition,Yb3Al5O12exhibits high strength and fracture toughness but low hardness compared to yttria stabilized zirconia（YSZ）,the most successful TBC *** observation reveals that the fracture surface of Yb3Al5O12displays 'layered structure feature',which is caused by crack *** based on Hertzian contact test demonstrates that Yb3Al5O12is a damage-tolerant *** deflection and bridging can arouse shear faults,dissipate the local damage energy,and restrict the crack propagation within the material,which play an important role in enhancing the damage *** superior mechanical properties and good damage tolerance ensure Yb3Al5O12a promising candidate for TBC applications.

关键词： Yb3Al5O12 Mechanical properties Damage Strength

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Epigenetics in the modern era of crop improvements

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science China Life sciences 2025年第06期 1570-1609页

作者： Yan Xue Xiaofeng Cao Xiangsong Chen Xian Deng Xingwang Deng Yong Ding Aiwu Dong Chengguo Duan Xiaofeng Fang Lei Gong Zhizhong Gong Xiaofeng Gu Chongsheng He Hang He Shengbo He Xinjian He Yan He Yuehui He Guifang Jia Danhua Jiang Jianjun Jiang Jinsheng Lai Zhaobo Lang Chenlong Li Qing Li Xingwang Li Bao Liu Bing Liu Xiao Luo Yijun Qi Weiqiang Qian Guodong Ren Qingxin Song Xianwei Song Zhixi Tian Jiawei Wang Yuan Wang Liang Wu Zhe Wu Rui Xia Jun Xiao Lin Xu Zhengyi Xu Wenhao Yan Hongchun Yang Jixian Zhai Yijing Zhang Yusheng Zhao Xuehua Zhong Daoxiu Zhou Ming Zhou Yue Zhou Bo Zhu Jiankang Zhu Qikun Liu College of Life Sciences Institute of Life Science and Green Development Hebei University Biotechnology Research Institute Chinese Academy of Agricultural Sciences College of Biology Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation Hunan Engineering and Technology Research Center of Hybrid Rapeseed Hunan University Institute of Advanced Agricultural Sciences School of Advanced Agricultural Sciences Peking University State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural University National Institute of Biological Sciences Key Laboratory of Seed Innovation Institute of Genetics and Developmental Biology Chinese Academy of Sciences School of Advanced Agricultural Sciences Peking-Tsinghua Center for Life Sciences Peking University Synthetic and Functional Biomolecules Center Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education College of Chemistry and Molecular Engineering Peking University Key Laboratory of Seed Innovation State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences State Key Laboratory of Wheat Improvement Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agricultural Sciences in Weifang State Key Laboratory of Crop Stress Adaptation and Improvement School of Life Sciences Henan University State Key Laboratory of Maize Bio-breeding National Maize Improvement Center Department of Plant Genetics and Breeding China Agricultural University Frontiers Science Center for Molecular Design Breeding China Agricultural University Center for Crop Functional Genomics and Molecular Breeding China Agricultural University Sanya Institute of China Agricultural University Hainan Yazhou Bay Seed Laboratory Institute of Advan

Epigenetic mechanisms are integral to plant growth, development, and adaptation to environmental stimuli. Over the past two decades,our comprehension of these complex regulatory processes has expanded remarkably, producing a substantial body of knowledge on both locus-specific mechanisms and genome-wide regulatory patterns. Studies initially grounded in the model plant Arabidopsis have been broadened to encompass a diverse array of crop species, revealing the multifaceted roles of epigenetics in physiological and agronomic traits. With recent technological advancements, epigenetic regulations at the single-cell level and at the large-scale population level are emerging as new focuses. This review offers an in-depth synthesis of the diverse epigenetic regulations, detailing the catalytic machinery and regulatory functions. It delves into the intricate interplay among various epigenetic elements and their collective influence on the modulation of crop traits. Furthermore, it examines recent breakthroughs in technologies for epigenetic modifications and their integration into strategies for crop improvement. The review underscores the transformative potential of epigenetic strategies in bolstering crop performance, advocating for the development of efficient tools to fully exploit the agricultural benefits of epigenetic insights.

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Catalysis-Assisted Synthesis of Two-Dimensional Conductive Metal-Organic Framework Films with Controllable Orientation

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Journal of the American Chemical Society 2025年第20期147卷 2025 May 12页

作者： Song, Min Wu, Yixuan Jia, Jingjing Peng, Jiahao Ren, Yixiao Cheng, Jingtian Xu, Yulong Liu, Wuyan Kang, Shuilong Fang, Yuan Huang, Lizhen Chen, Long Chi, Lifeng Lu, Guang Soochow University Suzhou215123 China Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Science Tianjin University Tianjin300072 China State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun130012 China MUST-SUDA Joint Research Center for Advanced Functional Materials Macau University of Science and Technology 999078 China

The facile preparation of two-dimensional (2D) conductive metal-organic framework (MOF) films with controllable orientation and thickness greatly facilitates the further structure-property investigation and performance optimization in their applications. Here, we report a catalysis-assisted synthesis strategy to the rapid production of oriented films of catechol-based (Cu3(HHTP)2, Zn3(HHTP)2, and Cu2TBA) and diamine-based (Ni3(HITP)2) 2D conductive MOFs with thicknesses adjustable from tens of nanometers to several micrometers. Relying on the utilization of a 0.3 nm Pt layer, which can be conveniently predecorated on a substrate surface via evaporating deposition or sputtering, as a catalyst for the aerobic oxidation of the redox-active ligands to trigger the formation of 2D conductive MOFs, this strategy is compatible with a majority of commonly used substrates and capable of producing patterned films with feature sizes ranging from micrometers to centimeters. Investigation on the growth kinetics of Cu3(HHTP)2 indicates that the preferential growth along the c-axis or in the ab-basal plane of its crystallites can be flexibly tuned by the formation reaction kinetics to guide the evolution of films with the face-on or edge-on orientation. The chemiresistive device incorporating the face-on Cu3(HHTP)2 film presents a high response (197%) and a fast respond speed (27 s) toward NH3 (30 ppm) at room temperature, which are superior not only to its edge-on counterpart (90% and 69 s, correspondingly) but also to other reported Cu3(HHTP)2-based sensors. © 2025 American Chemical Society.

关键词： Crystallization kinetics

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Superconductivity of the hybrid Ruddlesden‒Popper La5Ni3O11 single crystals under high pressure

arXiv

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arXiv 2025年

作者： Shi, Mengzhu Peng, Di Fan, Kaibao Xing, Zhenfang Yang, Shaohua Wang, Yuzhu Li, Houpu Wu, Rongqi Du, Mei Ge, Binghui Zeng, Zhidan Zeng, Qiaoshi Ying, Jianjun Wu, Tao Chen, Xianhui CAS Key Laboratory of Strongly coupled Quantum Matter Physics Department of Physics University of Science and Technology of China Anhui Hefei230026 China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Anhui Hefei230026 China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai China Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing210093 China Hefei National Laboratory University of Science and Technology of China Hefei230088 China Shanghai China Center for High Pressure Science and Technology Advanced Research Shanghai China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui Key Laboratory of Magnetic Functional Materials and Devices Institutes of Physical Science and Information Technology Anhui University Hefei China

The discovery of high-temperature superconductivity in La3Ni2O7 and La4Ni3O10 under high pressure indicates that the Ruddlesden‒Popper (RP) phase nickelates Rn+1NinO3n+1 (R = rare earth) is a new material family for high-temperature superconductivity. Exploring the superconductivity of other RP or hybrid RP phase nickelates under high pressure has become an urgent and interesting issue. Here, we report a novel hybrid RP nickelate superconductor of La5Ni3O11. The hybrid RP nickelate La5Ni3O11 is formed by alternative stacking of La3Ni2O7 with n=2 and La2NiO4 with n=1 along the c axis. The transport and magnetic torque measurements indicate a density-wave transition at approximately 170 K near ambient pressure, which is highly similar to both La3Ni2O7 and La4Ni3O10. With increasing pressure, high-pressure transport measurements reveal that the density-wave transition temperature (TDW) continuously increases to approximately 210 K with increasing pressure up to 12 GPa before the appearance of pressure-induced superconductivity, and the density-wave transition abruptly fades out in a first-order manner at approximately 12 GPa. The optimal superconductivity with Tconset = 64 K and Tczero = 54 K is achieved at approximately 21 GPa. On the other hand, high-pressure X-ray diffraction experiments reveal a structural phase transition from an orthorhombic structure to a tetragonal structure at approximately 4.5 GPa. In contrast to La3Ni2O7 and La4Ni3O10, the pressure-induced structural transition has no significant effect on either the density-wave transition or the superconductivity, suggesting a minor role of lattice degree of freedom in La5Ni3O11. The present discovery extends the superconducting member in the RP nickelate family and sheds new light on the superconducting mechanism. © 2025, CC BY.

关键词： High temperature superconductors

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Covalent Crosslinker-Free Photo-Curing 3D Printing of Liquid Metal composite Hydrogels Based On SI-photoATRP

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Small 2025年 e2411688页

作者： Yan, Ge Zhou, Mengjie Zhang, Jun Zhang, Wenjie He, Yanjie Qiao, Xiaoguang Shi, Ge Pang, Xinchang School of Materials Science and Engineering Henan University of Science and Technology Luoyang471023 China Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials Henan Key Laboratory of Advanced Nylon Materials and Application School of Materials Science and Engineering Zhengzhou University Zhengzhou450001 China College of Materials Engineering Henan International Joint Laboratory of Rare Earth Composite Materials Henan Engineering Technology Research Center for Fiber Preparation and Modification Henan University of Engineering Zhengzhou451191 China

Photocurable 3D printing (SLA or DLP) materials have garnered considerable attention due to their remarkable efficiency and precision in manufacturing. However, the presence of covalent crosslinking makes the recycling and reuse of printed materials extremely challenging. Here a novel approach to covalent crosslinker-free photo-curing 3D printing (via DLP) of liquid metal (LM) composite hydrogels is reported, leveraging surface-initiated photoinduced atom radical transfer polymerization (SI-photoATRP). The pre-synthesized PHEA-Br macroinitiators are grafted onto the surfaces of LM nanoparticles (LMNPs) by mechanical sonication, stabilizing the LMNPs within the resin solution while simultaneously generating active sites for SI-photoATRP. During the SI-photoATRP process, polymer chains of sufficient length form hydrogen bonds with multiple LMNPs, effectively transforming the LMNPs into crosslinking points. By integrating the aqueous photoATRP system catalyzed by carbon dots, LM@polymer composite hydrogel with complex structures are successfully established through DLP technology. The versatility of the 3D printed hydrogel is investigated by employing HEA, OEGA480, and AAm as the monomers in resin solution, respectively. Notably, all the LM@polymer composite hydrogels can be degraded in aqueous NaOH solution. Furthermore, LM@polymer-based networks exhibit self-repairing capabilities, serve as underwater adhesives, and conduct electricity. This work offers new insights into designing 3D printing materials and sustainable photocurable technology. © 2025 Wiley-VCH GmbH.

关键词： Crosslinking

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High-temperature Si-Pr eutectic filler for brazing RBSiC composites: Wettability and bonding mechanisms

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Journal of the European Ceramic Society 2025年第14期45卷

作者： Xue, Xiaoqian Lu, Fugang Yang, Jia Fu, Yibo Zhang, Qianrun Wu, Tong Fu, Mengchun Lin, Panpan Wang, Ce Dong, Yongkang Lin, Tiesong Liu, Zhanguo He, Peng State Key Laboratory of Precision Welding and Joining of Materials and Structures Harbin Institute of Technology Harbin150001 China Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou450018 China National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology Harbin150001 China Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology Harbin Institute of Technology Harbin150001 China

This study investigates the brazing of Si-Pr eutectic filler with Reaction-bonded Silicon Carbide (RBSiC), offering a comprehensive analysis of the wetting mechanism, microstructural evolution, mechanical properties, and fracture behavior of the joints. The results demonstrate that the Si-Pr eutectic filler achieves exceptional wettability with RBSiC, with no new phases formed at the interface, indicating stable and reliable interfacial interactions. Notably, the joint shear strength reaches 62.6 MPa at 1290 °C, with fracture occurring within the substrate, highlighting the superior mechanical properties of the brazed joints. The bonding mechanism involves Si adsorption and atomic bond formation facilitated by the diffusion of the filler and interface reconstruction. This work not only enhances our understanding of Si-Pr eutectic brazing alloys but also provides valuable insights for advancing composite material joining technologies, paving the way for more robust and efficient material connections in high-performance applications. © 2025 Elsevier Ltd

关键词： Shear strength

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Electron emission performance of non-stoichiometric ZrxCy reinforced W-based thermionic cathodes

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Ceramics International 2025年

作者： Gao, Junyan Zhang, Ruimin Liu, Hongmei Yang, Yunfei Liu, Hexiong Sun, Junhao Liu, Peng Fang, Haoxin Wang, Jinshu Key Laboratory of Advanced Functional Materials Education Ministry of China College of Materials Science and Engineering Beijing University of Technology Beijing100124 China Department of Physics College of Science Yanbian University Jilin Yanji133002 China

In order to provide high electron emission property at high temperatures for deep aerospace explore mission, a novel non-stoichiometric ZrxCy reinforced W-based thermionic cathodes were synthesized by vacuum sintering method. The zero-field emission current density (1.63 A/cm2) in W-Zr1C0.9 cathode is the highest with a low work function (2.45 eV) among the W-ZrxCy cathodes, which is 9.87⁓53.3 times higher than that of the previously reported carbide doped tungsten cathode. The W-Zr1C0.9 cathode exhibits the smallest evaporation depth of Zr (8.90 μm) since Zr can maintain the dynamic balance to replenish, and form the stable active layer between a suitable Zr/C ratio and W matrix due to the generated metallic Zr after activation, leading to the reduced work function. First-principles calculations further illustrate that the W-12.5 % ZrxCy coverage with Zr-doped configuration obtain the lowest work function, which explains the effect of Zr and C on the electron emission performance of cathodes. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Thermionic emission

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Non-competitive inhibition of Ag(I) catalysis by coenzyme A: A novel strategy for detecting histone acetyltransferase activity in gastric cancer circulating tumor cells

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Sensors and Actuators B: Chemical 2025年 441卷

作者： Sun, Jingran Hu, Kaiyue Hu, Yufang Chen, Jiayun Chen, Anqi Wen, Luhong Qing, Zhihe State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products State Key Laboratory Base of Novel Functional Materials and Preparation Science School of Materials Science & Chemical Engineering The Research Institute of Advanced Technologies Ningbo University Ningbo315211 China Ningbo Huayi Ningchuang Intelligent Technology Co. Ltd Ningbo315000 China Hunan Provincial Key Laboratory of Cytochemistry School of Chemistry and Chemical Engineering Changsha University of Science and Technology Changsha410114 China

This study introduces a novel method for detecting histone acetyltransferase (HAT) activity in gastric cancer circulating tumor cells (CTCs) by leveraging coenzyme A (CoA)-mediated non-competitive inhibition of silver ion (Ag(I)) catalysis. The interactions between CoA, Ag(I), and the chromogenic substrate 3,3′,5,5′-tetramethylbenzidine (TMB) were thoroughly examined, leading to the development of a highly sensitive and specific assay for HAT detection. Notably, this method utilizes Ag(I) to catalyze the oxidation of TMB without the need for H₂O₂, simplifying the reaction system. Our results show that CoA effectively inhibits the catalytic activity of Ag(I) in a non-competitive fashion, offering a robust means to quantify HAT activity in CTCs. By utilizing UV-Vis spectroscopy and a smartphone-based RGB platform, this method exhibited remarkable selectivity and sensitivity, with a detection limit of 0.033 ng/mL (S/N = 3). Comprehensive analysis across various cell types, including normal cells, gastric cancer cells, and simulative CTCs, revealed that HAT activity was highest in CTCs, underscoring their critical role to some extent in tumor metastasis. Furthermore, stimulation with epidermal growth factor (EGF) and tumor necrosis factor-α (TNF-α) demonstrated distinct HAT activity patterns in different cells, highlighting their differential responses to growth and inflammatory signals. This method can also be adapted to other biosensing platforms by altering metal ions and inhibitory components, showcasing its versatility and potential for real-world applications in cancer diagnostics and metastasis monitoring. © 2025 Elsevier B.V.

关键词： Cell death

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A Polymer System with Ultra-High Molecular Potential Energy

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advanced functional Materials 2025年

作者： Wang, Yan-Jie Ni, Jia-Yu Gao, Fan Cui, Chunyan Xu, Ziyang Zheng, Si Yu Sun, Hanshu He, Yang Zhao, Yiping Wu, Zi Liang Liu, Wenguang Chen, Li State Key Laboratory of Separation Membranes and Membrane Processes School of Materials Science and Engineering Tiangong University Tianjin300387 China School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin300350 China College of Materials Science and Engineering Zhejiang University of Technology Hangzhou310014 China Cangzhou Institute of Tiangong University Cangzhou061000 China Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310027 China

In contrast to small molecules, macromolecules exhibit distinctive characteristics due to their higher potential energy (EP). These include elevated viscosity, enhanced tensile strength, cohesiveness, and stability. The EP of macromolecules can be modulated through the design of side groups, but this approach may also alter chemical properties. This study introduces an α-methylation strategy that significantly enhances EP without modifying the structure of these side groups. This increase in EP induces a transition in the rheological behavior of polymer systems from a rubbery to a glassy state. Concurrently, it improves hygrothermal tolerance without changing dynamic bond groups. The application of this ultra-high EP strategy results in substantial enhancements in traditional acrylic adhesives: a 1500% increase in adhesion strength and a 33200% rise in adhesion modulus when exposed to hot water. Polymer is endowed with a shape memory function due to ultra-high EP. With the dual interface locking of this function, the adhesion strength can be increased by 70%. This ultra-high EP strategy provides a possible explanation for the origin of vitrification in polymeric systems. © 2025 Wiley-VCH GmbH.

关键词： Macromolecules

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