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Science China materials 2025年

作者：张水鑫吴锃柳蒂赵岩陈少杰王洋刘云圻 Department of Materials Science State Key Laboratory of Molecular Engineering of Polymers Laboratory of Advanced Materials Fudan University School of New Energy Ningbo University of Technology Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences

n型有机半导体材料的开发对有机场效应晶体管（OFETs）的性能提升及其在p-n互补逻辑电路中的集成至关重要.深入理解这些材料的结构-性能关系对于其性能的进一步优化至关重要.本研究集中设计并合成了两种新型的n型三联受体,NTI-BTT和NTI-...

n型有机半导体材料的开发对有机场效应晶体管（OFETs）的性能提升及其在p-n互补逻辑电路中的集成至关重要.深入理解这些材料的结构-性能关系对于其性能的进一步优化至关重要.本研究集中设计并合成了两种新型的n型三联受体,NTI-BTT和NTI-BT,采用萘并噻吩二酰胺（naphtho[2,3-b]thiophene diimide,NTI）核心作为基础.我们的研究重点是探讨通过融合和/或间隔体插入实现的噻吩扩展对这些材料的物化和电荷输运特性的影响.值得注意的是,与基于萘二酰胺（NDI）的对比物相比,NTI封端的三联体表现出更强的电子吸引能力,其特点是更深的能级和更平面的骨架.然而,在基于NTI-BT的OFETs中,噻吩融合导致电子迁移率显著下降至0.004 cm2V-1s-1.这种差异可以归因于多晶结构,其中晶粒间的多个晶界增加了陷阱态密度,进而导致迁移率降低.对于NTI-BTT,在NTI和苯并噻二唑单元之间引入噻吩间隔体被发现可以有效增强n型电荷输运.此分子修饰提高了π-π相互作用并减小了分子间距离,导致π-π堆积距离短至3.45?.因此,NTI-BTT表现出显著提高的电子迁移率,为0.13 cm2V-1s-1,比基于NDI的对比物高出四倍.这些发现为n型有机半导体分子的设计做出了重要贡献,并为实现更高性能的OFETs提供了宝贵见解.

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Light-driven directional ion transport for enhanced osmotic energy harvesting

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National Science Review 2021年第8期8卷 178-185页

作者： Kai Xiao Paolo Giusto Fengxiang Chen Ruotian Chen Tobias Heil Shaowen Cao Lu Chen Fengtao Fan Lei Jiang Max Planck Institute of Colloids and Interfaces Department of Colloid Chemistry Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang University State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University State Key Laboratory of Catalysis 2011-iChEMDalian National Laboratory for Clean Energy (DNL)Dalian Institute of Chemical Physics(DICP)Chinese Academy of Sciences State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Light-driven ion（proton） transport is a crucial process both for photosynthesis of green plants and solar energy harvesting of some archaea. Here, we describe use of a TiO2/C3N4semiconductor heterojunction nanotube membrane to realize similar light-driven directional ion transport performance to that of biological systems. This heterojunction system can be fabricated by two simple deposition steps. Under unilateral illumination, the TiO2/C3N4heterojunction nanotube membrane can generate a photocurrent of about 9 μA/cm2, corresponding to a pumping stream of ～5500 ions per second per nanotube. By changing the position of TiO2and C3N4, a reverse equivalent ionic current can also be realized. Directional transport of photogenerated electrons and holes results in a transmembrane potential, which is the basis of the light-driven ion transport phenomenon. As a proof of concept, we also show that this system can be used for enhanced osmotic energy generation. The artificial light-driven ion transport system proposed here offers a further step forward on the roadmap for development of ionic photoelectric conversion and integration into other applications, for example water desalination.

关键词： ion pump ion transport nanofluidic porous membrane carbon nitride

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Lizard skin-inspired superhydrophobic photothermal fabric with hierarchical structure for anti/de-icing coverings

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Colloids and Surfaces A: Physicochemical and Engineering Aspects 2025年 722卷

作者： Hou, Shipeng Wang, Xi Li, Guolong Zhang, Di Qian, Xiaoming Zhang, Songnan State Key Laboratory of Advanced Separation Membrane Materials/Ministry of Education Key Laboratory for Advanced Textile Composite Materials School of Textile Science and Engineering Tiangong University Tianjin300387 China Jiangxi Center for Modern Apparel Engineering and Technology Jiangxi Institute of Fashion Technology Nanchang330201 China School of Chemical Engineering and Technology Tiangong University Tianjin300387 China Co. Ltd. Nantong226000 China Shandong Chambroad Holding Group Co. Ltd. Binzhou256600 China

Icing often brings about severe risks, causing financial losses, compromising personal safety, and damaging facilities, etc. Hence, it is urgent to address icing. In this study, a new approach for the efficient anti/de-icing by the semi-aquatic anole lizards was proposed by developing a photothermal superhydrophobic coating. This coating combined polyaniline (PANI) and polydimethylsiloxane (PDMS), creating a superhydrophobic surface with the efficient photothermal conversion properties. The fabrication process included the deposition of PANI via the in-situ polymerization, followed by the impregnation with PDMS. This coating not only enhanced the fabric light-absorbing ability, but also presented significant hydrophobic properties. It had the surface equilibrium temperature of up to 63.5 °C at the light intensity of 1 sun and contact angle of 147°. The anti-icing tests suggested that the coating extended the condensation time of water droplets from 147 s to 338 s and significantly reduced the ice adhesion strength. Furthermore, the photothermal de-icing performance indicated that both the small ice particles and the large overlying ice layer were all rapidly melted and slid down under light irradiation. The coating also exhibited a strong self-cleaning ability, with contaminants readily removed by the water. Durability tests confirmed that the coating was resistant to the UV light, friction and multiple freeze-thawing cycles, ensuring long-term functionality. These findings provide new scope for the development of green and efficient anti/de-icing coated fabric, especially in greenhouses of the agricultural field. © 2025 Elsevier B.V.

关键词： Protective coatings

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Thermally activated delayed fluorescence Au-Ag-oxo nanoclusters:From photoluminescence to radioluminescence

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Aggregate 2024年第2期5卷 447-456页

作者： Peng Yuan Hansong Zhang Yang Zhou Tengyue He Sami Malola Luis Gutiérrez-Arzaluz Yingwei Li Guocheng Deng Chunwei Dong Renwu Huang Xin Song Boon K.Teo Omar F.Mohammed Hannu Häkkinen Osman.M.Bakr Nanfeng Zheng New Cornerstone Science Laboratory State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy MaterialsNational and Local Joint Engineering Research Center of Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina KAUST Catalysis Center(KCC) Division of Physical Sciences and EngineeringKing Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Advanced Membranes and Porous Materials Center Division of Physical Science and EngineeringKing Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Department of Physics and Chemistry Nanoscience CenterUniversity of JyväskyläJyväskyläFinland Department of Chemistry and Chemical Biology Harvard UniversityCambridgeMassachusettsUSA Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) XiamenChina

Thermally activated delayed fluorescence(TADF)materials have numerous applications in energy conversion and luminescent ***,they are typically achieved as metal-organic complexes or pure organic ***,we report the largest Au-Ag-oxo nanoclusters to date,Au_(18)Ag_(26)(R1COO)_(12)(R_(2)C≡C)_(24)(μ_(4)-O)_(2)(μ_(3)-O)_(2)(Au_(18_Ag_(26),where R_(1)=CH_(3-),Ph-,CHOPh-or CF3Ph-;R_(2)=Phor FPh-).These nanoclusters exhibit exceptional TADF properties,including a small S1-T1 energy gap of 55.5 meV,a high absolute photoluminescence quantum yield of 86.7%,and a microseconds TADF decay time of 1.6μs at ambient ***,Au18Ag26 shows outstanding stability against oxygen quenching and ambient *** level analysis reveals the strongπ⋯πand C-H⋯πinteractions from the aromatic alkynyl ligands and the enhancement of metal-oxygen-metal interactions by centrally coordinated O^(2−).Modeling of the electronic structure shows spatially separated highest occupied molecular orbital and lowest unoccupied molecular orbital,which promote charge transfer from the ligand shell,predominantly carboxylate ligands,to O^(2−)-embedded metal ***,TADF Au-Ag-oxo nanoclusters exhibit promising radioluminescence properties,which we demonstrate for X-ray *** work paves the way for the design of TADF materials based on large metal nanoclusters for light-emission and radioluminescence applications.

关键词： Au-Ag-oxo nanoclusters photoluminescence radioluminescence TADF X-ray imaging

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Stress-assisted design of stiffened graphene electrode structure toward compact energy storage

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Journal of Energy Chemistry 2022年第8期31卷 478-487,I0013页

作者： Yuzuo Wang Jing Chen Huasong Qin Ke Chen Zhuangnan Li Yan Chen Juan Li Tianzhao Hu Shaorui Chen Zhijun Qiao Dianbo Ruan Quanhong Yang Yilun Liu Feng Li Ningbo University Institute of Advanced Energy Storage Technology and EquipmentNingbo 315211ZhejiangChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina State Key Laboratory of Chemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Ningbo CRRC New Energy Technology Co. LtdNingbo 315112ZhejiangChina Laboratory for Multiscale Mechanics and Medical Science School of AerospaceXi’an Jiaotong UniversityXi’an 710049ShaanxiChina Department of Materials Science and Metallurgy University of CambridgeCB30FSUnited Kingdom Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012JilinChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina

The low spatial charge-storage density of porous carbons greatly limits volumetric performance in electrochemical *** increase of charge-storage density requires structural refinements to balance the trade-offs between the porosity and density of materials,but the limited mechanical properties of carbons usually fail to withstand effective densifying processes and obtain an ideal pore ***,we design the stiffened graphene of superior bending rigidity,enabling the fine adjustments of pore structure to maximize the volumetric capacitance for the graphene-based *** inplane crumples on graphene sheets are found to contribute largely to the bending rigidity,which is useful to control the structural evolution and maintain sufficient ion-accessible surface area during the assembling *** makes the capacitance of stiffening activated graphene keep 98%when the electrode density increases by 769%to reach 1.13 g cm^(-3) after mechanical pressure,an excellent volumetric energy density of 98.7 Wh L^(-1) in an ionic-liquid electrolyte is *** results demonstrate the role of intrinsic material properties on the performance of carbon-based electrodes for capacitive energy storage.

关键词： Supercapacitor Activated graphene Bending rigidity Volumetric capacitance Pore structure

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Composition Modulation of Hematite Photoanode for Highly Efficient Photoelectrochemical Water Oxidation

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SSRN 2023年

作者： Liu, Xueqin Wang, Jingnan Lin, Kaijie Cao, Yu Ran, Jianhua Chen, Yihuang Li, Yingzhe Hu, Xiaoqin Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430074 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing Wuhan Textile University Wuhan430200 China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan430074 China College of Chemistry and Materials Engineering Wenzhou University Wenzhou325035 China

Hematite (α-Fe2O3) has emerged as a promising candidate for photoelectrochemical (PEC) water oxidation. Modulating its composition is pivotal for obtaining highly efficient PEC performance. However, an oxygen-rich surface is formed from the FeOOH precursor, resulting in poor surface charge transfer. In this work, for the first time, Fe nanoparticles were deposited on the surface of α-Fe2O3 to reduce the surface oxygen content. Subsequently, the oxygen vacancy (Vo) and hydrogen (H) impurity defects were introduced to further control the chemical composition of Fe2O3. The introduction of Vo can increase the charge carrier density, while the charge transport mobility is reduced due to the low hopping process of small polarons induced by Vo. To address the problem, we show that a shallow-level defects are created via H doping, which extracts the trapped electrons out of the Vo-induced trap states. Due to the formation of homogeneous distribution of Fe and O, introduction of Vo and the incorporation of shallow-level defects by H impurity, charge separation efficiency were markedly improved. Consequently, the photocurrent density of α-Fe2O3 photoanode was increased from 0.76 to 1.71 mA cm-2 at the potential of 1.23 V versus the reversible hydrogen electrode. Our work verifies the relationship between the PEC performance of semiconductor photoanode and its composition and provides promising opportunities for further optimization. © 2023, The Authors. All rights reserved.

关键词： Charge transfer

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Atomic defects,functional groups and properties in MXenes

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Chinese Chemical Letters 2021年第1期32卷 339-344页

作者： Wenjun Cui Zhi-Yi Hu Raymond RUnocic Gustaaf Van Tendeloo Xiahan Sang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China NRC(Nanostructure Research Centre) Wuhan University of TechnologyWuhan 430070China Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTN 37831United States EMAT(Electron Microscopy for Materials Science) University of AntwerpAntwerpB-2020Belgium

MXenes,a new family of functional two-dimensional(2 D) materials,have shown great potential for an extensive variety of applications within the last *** defects and functional groups in MXenes are known to have a tremendous influence on the functional *** this review,we focus on recent progress in the characterization of atomic defects and functional group chemistry in MXenes,and how to control them to directly influence various properties(e.g.,electron transport,Li^(+) adsorption,hydrogen evolution reaction(HER) activity,and magnetism) of 2 D MXenes *** structural transformations such as oxidation and growth induced by atomic defects in MXenes are also *** review thus provides perspectives on property optimization through atomic defect engineering,and bottom-up synthesis methods based on defect-assisted homoepitaxial growth of MXenes.

关键词： MXenes Atomic defects Surface functional groups Electron microscopy Functional properties

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Spider-capture-silk mimicking fibers with high-performance fog collection derived from superhydrophilicity and volume-swelling of gelatin knots

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Collagen and Leather 2023年第1期5卷 45-54页

作者： Yuanzhang Jiang Harun Venkatesan Shuo Shi Cong Wang Miao Cui Qiang Zhang Lin Tan Jinlian Hu College of Biomass Science and Engineering Key Laboratory of Leather Chemistry and Engineering of Ministry of EducationSichuan UniversityChengdu 610065China Department of Textile and Fibre Engineering Indian Institute of TechnologyDelhiNew Delhi 110016India Department of Biomedical Engineering City University of Hong KongKowloon 999077Hong Kong SARChina Shenzhen Bay Laboratory Shenzhen 518132China Key Laboratory of Biochip Technology Shenzhen Biotech and Health CentreCity University of Hong Kong Shenzhen Research InstituteShenzhen 518057China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China City University of Hong Kong Shenzhen Research Institute Shenzhen 518057China

Spider-capture-silk(SCS)can directionally capture and transport water from humid air relying on the unique geometrical *** there have been adequate reports on the fabrication of artificial SCSs from petroleum-based materials,it remains a big challenge to innovate bio-based SCS mimicking fibers with high-performance fog collection ability and efficiency ***,we report an eco-friendly and economical fiber system for water collection by coating gelatin on degummed *** to the previously reported fibers with the best fog collection ability(~13.10μL),Gelatin on silk fiber 10(GSF10)can collect larger water droplet(~16.70μL in 330 s)with~98%less ***,the water collection efficiency of GSF10 demonstrates~72%and~48%enhancement to the existing best water collection polymer coated SCS fibers and spidroin eMaSp2 coated degummed silk respectively in terms of volume-to-TCL(vapor-liquid-solid three-phase contact line)*** simultaneous function of superhydro-philicity,surface energy gradient,and~65%water-induced volume swelling of the gelatin knots are the key factors in advancing the water collection *** availability of feedstocks and~75%improved space utiliza-tion guarantee the scalability and practical application of such bio-based fiber.

关键词： Artificial spider-capture-silk Directional water collection Volume-to-TCL index Superhydrophilicity Volume swelling

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Designing Magnetic Semiconductors From a Ferromagnetic Metallic Glass

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FRONTIERS IN materials 2022年 9卷

作者： Wang, Xinchao Li, Xuan Chen, Na Zhang, Tao Key Laboratory of Aerospace Materials and Performance (Ministry of Education) School of Materials Science and Engineering Beihang University Beijing China No 18th Research Institute China Electronics Technology Group Corporation Tianjin China Key Laboratory for Advanced Materials Processing Technology (MOE) The State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing China Center for Advanced Analysis and Computational Science Zhengzhou University Zhengzhou China

Utilizing both charge and spin degrees of freedom of electrons simultaneously in magnetic semiconductors promises new device concepts by creating an opportunity to realize data processing, transportation and storage in one single spintronic device. Unlike most of the traditional diluted magnetic semiconductors, which obtain intrinsic ferromagnetism by adding magnetic elements to non-magnetic semiconductors, we attempt to develop new magnetic semiconductors via a metal-semiconductor transition by introducing oxygen into a ferromagnetic Co-Fe-B metallic glass. The atomic structure and electronic structure of the Co-Fe-B-O sample are explored by using first-principles calculations. The total pair correlation functions of both the Co-Fe-B and Co-Fe-B-O samples evidence their glass structures. The bond pair and coordination number analysis together demonstrate that the oxygen addition enables the bond types to change from the dominant metallic bonding in the Co-Fe-B metallic glass to the mixture of metallic, ionic and covalent bonding in the Co-Fe-B-O oxide glass. This results in the localization of electron charge density and the opening of the band gap in the Co-Fe-B-O oxide glass. The density of states suggests the Co-Fe-B-O oxide glass is semiconducting with a band gap of about 1.7 eV, but there are intermediate energy levels in the band gap. Meanwhile, the Co-Fe-B-O oxide glass remains to be ferromagnetic. These results indicate that the Co-Fe-B-O oxide glass is a magnetic semiconductor transferred from a ferromagnetic Co-Fe-B metallic glass, which is further verified by the experimental realization of a Co-Fe-B-O magnetic semiconductor. Furthermore, our calculation results reveal that a hybridization of the 4s/4p, 3d electrons of ferromagnetic Co and Fe atoms and O 2p electrons exists. Such s, p-d exchange interaction is essential to bridge the mutual interaction between the electrical conduction arising from s-like electrons and ferromagnetism supported by 3d elec

关键词： Co-Fe-B-O oxide glass magnetic semiconductor ferromagnetism electronic structures first-principles

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Scalable 3d textile with Hierarchically Functionalized Pyramidal Units Using Nanostructured Polyamide@Carbon/Fe3o4 Fibers for Tunable Microwave Absorption

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SSRN 2023年

作者： Deng, Xiuyan Gao, Shuang Qi, Xiaoming Dai, Hongbo Fu, Shaoyun Ni, Qingqing Fu, Yaqin Institute of Composite Materials Zhejiang Sci-Tech University Zhejiang Hangzhou310018 China Zhejiang Provincial Innovation Center of Advanced Textile Technology Zhejiang Shaoxing312030 China College of Aerospace Engineering State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing400044 China Key Laboratory of Advanced Textile Materials and Manufacturing Technology China

Most of the existing flexible microwave absorbing materials (MAMs) are in forms of nonwoven or woven composites. However, the nonwoven ones always show the poor mechanical properties and the woven ones normally involve with the complex fabrication processes and present heavy weight (>1.0 g/cm3), large thickness (>4.0 mm), and impermeability, which greatly hinder their wearable applications. Herein, a scalable 3D textile with hierarchically functionalized pyramidal units using the polyamide@carbon/Fe3O4 fibers was successfully fabricated via a simple combined process of melt-spinning and three-dimensional (3D) weaving technologies. The core-sheath polyamide@carbon/Fe3O4 fibers can be continuously fabricated with a high production rate of 6000 m/min using pristine polyamide as core and the modified polyamide doped with carbon black and Fe3O4 nanoparticles as sheath. As a result, the as-prepared polyamide@carbon/Fe3O4 fibers are easily woven into various 3D textiles with pyramid periodic and impedance matching-lossy-dielectric multilayer structures, simultaneously achieving the impedance gradient and destructive interference. More importantly, changing the size of pyramid structures can tailor the microwave absorption performance. Consequently, the high-density polyamide@carbon/Fe3O4 textile has high-efficiency microwave absorption ability, showing lightweight (0.3 g/cm3), small-thickness (3.2 mm), strong (-47.51 dB), and broadband (5.2 GHz). Besides, the 3D structures endowed the textile with excellent mechanical property, superior flexibility, outstanding breathability and good heat insulation property, which is better than similar MAMs. This work provides a promising strategy for facile and large-scalable production of microwave absorption textiles with high overall performance. © 2023, The Authors. All rights reserved.

关键词： Magnetite

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