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Aggregate 2024年第6期5卷 435-446页

作者： Youling He Junqian Zhang Chaoyang Ma Junkai Liu Jingjing Guo Ting Han Rongrong Hu Bing Shi Li Ben Zhong Tang Center for AIE Research Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsGuangdong Provincial Key Laboratory of New Energy Materials Service SafetyCollege of Materials Science and EngineeringShenzhen UniversityShenzhenGuangdongChina College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhenGuangdongChina State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhouGuangdongChina Key Laboratory of New Lithium-Ion Battery and Mesoporous Material College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdongChina Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological University21 Nanyang LinkNanyangSingapore School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhen(CUHK-Shenzhen)ShenzhenGuangdongChina

The multifaceted regulation of the chiroptical properties and self-assembly behaviors of chiral fluorescent polymers is of great significance yet remains challenging to ***,a series of novel salen-based chiral fluorescent polymers with aggregation-induced emission and varied substitution manners were facilely and efficiently *** factors were systematically investigated on the chiroptical properties and self-assembly performance of these polymers,which include molecular structures,solvent environments,metal coordination,and liquid crystal(LC)*** change in the solvent composition can lead to diverse assembly morphologies of all these chiral polymers,from single-handed helical fibers,helical toroids or loops,to spherical structures,consequently leading to an aggregation-reduced circular dichroism(CD)*** polymers bearing salen units show highly selective and reversible coordination with Zn^(2+)and can also induce multiple responses in the absorption,luminescence,CD,and circularly polarized luminescence(CPL)of these chiral fluorescent polymers via a coordination-and dissociation-initiated self-assembly ***,a small amount of the chiral fluorescent polymer in can induce achiral nematic 4-cyano-4′-n-pentylbiphenyl(5CB)to form ordered chiral nematic LC phase with significant improvement in their CD and CPL *** absolute absorption and luminescent dissymmetry factors of the resulting supramolecular assemblies can reach the order of 10^(−1).

关键词： aggregation-induced emission chirality circularly polarized luminescence fluorescent polymers selfassembly

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Metal-to-insulator transition in oxide semimetals by anion doping

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Interdisciplinary materials 2024年第3期3卷 358-368页

作者： Haitao Hong Huimin Zhang Shan Lin Jeffrey A.Dhas Binod Paudel Shuai Xu Shengru Chen Ting Cui Yiyan Fan Dongke Rong Qiao Jin Zihua Zhu Yingge Du Scott A.Chambers Chen Ge Can Wang Qinghua Zhang Le Wang Kui-juan Jin Shuai Dong Er-Jia Guo Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijingChina Department of Physics&Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Key Laboratory of Quantum Materials and Devices of Ministry of Education School of PhysicsSoutheast UniversityNanjingChina Materials Science and Technology Division Oak Ridge National LaboratoryOak RidgeTennesseeUSA Physical and Computational Sciences Directorate Pacific Northwest National LaboratoryRichlandWashingtonUSA School of Chemical Biological and Environmental EngineeringOregon State UniversityCorvallisOregonUSA Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical ChemistryUniversity of Science and Technology BeijingBeijingChina Environmental Molecular Sciences Laboratory Pacific Northwest National LaboratoryRichlandWashingtonUSA Songshan Lake Materials Laboratory DongguanGuangdongChina

Oxide semimetals exhibiting both nontrivial topological characteristics stand as exemplary parent compounds and multiple degrees of freedom,offering a promise for the realization of novel electronic *** this work,we report the structural and transport phase transition in an oxide semimetal,SrNbO_(3),achieved through effective anion ***,the resistivity increased by more than three orders of magnitude at room temperature upon *** extent of electronic modulation in SrNbO_(3)is strongly correlated with misfit strain,underscoring its phase instability to both chemical doping and crystallographic symmetry *** first-principles calculations,we discern that elevating the level of nitrogen doping induces an upward shift in the conductive bands of SrNbO_(3−δ)N_(δ).Consequently,a transition from a metallic state to an insulating state becomes apparent as the nitrogen concentration reaches a threshold of 1/*** investigation shows effective anion engineering in oxide semimetals,offering pathways for manipulating their physical properties.

关键词： anion doping metal-to-insulator transition oxide semimetal phase transition

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Transforming bulk alkenes and alkynes into fine chemicals enabled by single-atom site catalysis

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Nano Research 2022年第9期15卷 7840-7860页

作者： Ping Guo Hongyuan Liu Jie Zhao Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China

The addition and substitution reactions across a variety of alkenes and alkynes have been playing an important role in organic *** particular,catalyses enabled by homogeneous complexes as well as heterogenous nanomaterials have been much received attentions over *** with these blooming progresses in these fields,single-atom site catalysts(SACs)exhibit outstanding performances in terms of reactivity and selectivity,thus providing a new powerful strategy to upgrade these bulk ***,we summarize the reactions of alkenes and alkynes enabled by SACs,in which catalytic hydrogenation,hydrosilylation,hydroboration,hydroformylation,and cross coupling have been ***,preparations and fine structures of the corresponding SACs have been described,therefore providing a better understanding and overview to address the origin of catalytic activity in the reported examples.

关键词： single-atom site catalysts(SACs) alkenes alkynes

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Heterogeneous Cu catalyst in organic transformations

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Nano Research 2022年第4期15卷 2810-2833页

作者： Ruixue Zhang Yan Chen Muhua Ding Jie Zhao Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China

Copper catalysis plays a crucial role in organic synthesis providing a wide spectrum of important transformations over *** in homogeneous copper catalysis has often relied on the appropriate modulation of coordinating ligands,whereas the development of the corresponding heterogeneous variant has relatively gained less *** this review,we aim to deliver a comprehensive summary of a number of seminal heterogenized Cu-catalyzed homogenous catalysis reported over the last *** scope of this review is classified by the type of transformations in which the catalyst’s preparation and activity including the relationship between structure and activity are *** this way,this review highlights the potential and synthetic perspectives of heterogeneous copper catalysis in both academic and industry.

关键词： copper heterogeneous catalysis organic reactions

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Recent advances in long-persistent luminescence materials based on host–guest architecture

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Chinese chemical Letters 2024年第1期35卷 84-94页

作者： Tiantian Wang Man Liu Jiayi Mao Yimeng Liang Lichang Wang Dongzhi Liu Tianyang Wang Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Science(TJ-MOS) Department of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China Department of Chemistry and Biochemistry and the Materials Technology Center Southern Illinois UniversityCarbondaleIL 62901United States School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China d Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China

Organic long-persistent luminescence(LPL)materials,featuring low preparation cost,eco-friendly synthesis,and easy modification of functional groups,have exhibited extensive applications in information encryption,anti-counterfeiting,and biological *** design strategies including crystallization-inducement,H-aggregation,and host-guest doping to enhance persistent-room-temperature phosphorescence(RTP)effect by precisely controlling intersystem crossing(ISC)constant and suppressing nonradiative decay rates,those are important strategies to enable LPL *** the strategies,researchers have made several efforts to enhance persistent-RTP effect by host-guest interaction,in which the host matrices provide a rigid environment for phosphor guest *** interaction of the luminescent guest molecules with the host matrix can effectively reduce the vibration and rotation of the luminescent molecules,and suppress the non-radiative inactivation,thereby improving the phosphorescence quantum *** review aims to summarize several design strategies of pure organic LPL materials based on persistent-RTP effect through host-guest interaction,and describe some applications of pure organic LPL materials in different fields.

关键词： Organic long-persistent luminescence Host-guest interaction Small molecule Macrocyclic Polymer

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Anti-fatigue ionic gels for long-term multimodal respiratory abnormality monitoring

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Journal of materials science & Technology 2023年第20期151卷 99-108页

作者： Xiang-Jun Zha Jian-Bo Li Guo-Peng Liang Jun-Hong Pu Zhong-Wei Zhang Bo Wang Ji-Gang Huang Jin Jia Xin Zhao Kai-Qi Pan Mei-Ling Dong Kai Ke Yan Kang Wei Yang College of Polymer Science and Engineering Sichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu 610065SichuanChina Department of Critical Care Medicine West China HospitalSichuan University37 Guo Xue Xiang StChengdu 610041SichuanChina Laboratory of Liver Transplantation Frontiers Science Center for Disease-Related Molecular NetworkWest China Hospital of Sichuan UniversityChengdu 610041SichuanChina Centre for Advanced Macromolecular Design and Australian Centre for NanoMedicine School of Chemical EngineeringUNSW SydneyNSW 2052Australia School of Mechanical Engineering Sichuan UniversityChengdu 610065SichuanChina

Wearable electronics integrated with stretchable sensors are considered a promising and non-invasive strategy to monitor respiratory status for health ***,long-term and stable monitoring of respiratory abnormality is still a grand ***,we report a facile one-step thermal stretching strategy to fabricate an anti-fatigue ionic gel(AIG)sensor with high fatigue threshold(0=1130 J m^(–2)),high stability(>20,000 cycles),high linear sensitivity,and recyclability.A multimodal wearable respiratory monitoring system(WRMS)developed with AIG sensors can continuously measure respiratory abnormality(single-sensor mode)and compliance(multi-sensor mode)by monitoring the movement of the ribcage and abdomen in a long-term *** single-sensor mode,the respiratory frequency(Fr),respiratory energy(Er),and inspire/expire time(I/E ratio)can be extracted to evaluate the respiratory status during sitting,sporting,and ***,the multi-sensors mode is developed to evaluate patientventilator asynchrony through validated clinical criteria by monitoring the incongruous movement of the chest and abdomen,which shows great potential for both daily home care and clinical applications.

关键词： Anti-fatigue ionic gels Wearable electronics Multimodal respiratory monitoring

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Conductive Mof Coating for Suppressing the Mn Dissolution in Limn2o4 Toward Long-Life Lithium-Ion Batteries

SSRN

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SSRN 2024年

作者： Kim, Eunji Lee, Jeongmin Park, Junghyun Nam, Kwan Woo Department of Chemical Engineering and Materials Science Graduate Program in System Health Science and Engineering Ewha Womans University Seoul03760 Korea Republic of

Spinel lithium manganese oxide (LiMn2O4, denoted LMO) is one of the promising cathode materials with non-toxicity, high operating voltage, and low cost. However, structural collapse during battery cycling — caused by Mn dissolution and the Jahn-Teller effect — is a critical disadvantage, reducing cycle retention, particularly at high temperatures. In this investigation, to solve these critical issues of LMO cathode, we introduce Cu3(HITP)2, a conductive two-dimensional (2D) MOF as a surface coating material through a simple process. Coating the conductive 2D Cu3(HITP)2 MOF increases the electrical conductivity and shows the effect of suppressing the dissolution of Mn by enriching the surface of LMO with Mn4+. By suppressing Mn dissolution, structural stability also improves, resulting in offsetting all the inherent problems of LMO. As a result, at 50 °C, CuHITP–LMO exhibits an initial capacity of 98.7 mAh g–1 at 100 mA g–1 and achieved a capacity of 74.5 mAh g–1 after 100 cycles, indicating outstanding cyclability. This research highlights the potential of conductive 2D MOF to improve the electrochemical performances of battery cathode. © 2024, The Authors. All rights reserved.

关键词： Cathodes

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Imaging Crystal Domains and Orientation in Block Copolymer Electrolytes with 4D-STEM

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Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2023年第1期29卷 258-259页

作者： Chen, Min Bustillo, Karen C. Patel, Vivaan Savitzky, Benjamin H. Maslyn, Jacqueline A. Ophus, Colin Jiang, Xi Balsara, Nitash P. Minor, Andrew M. Department of Materials Science and Engineering University of California Berkeley CA United States National Center for Electron Microscopy Molecular Foundry Lawrence Berkeley National Lab Berkeley CA United States Department of Chemical and Biomolecular Engineering University of California Berkeley CA United States Materials Science Divisions Lawrence Berkeley National Laboratory Berkeley CA United States

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Contact optimisation strategy for wafer-scale field-effect transistors based on two-dimensional semiconductors

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Journal of materials science & Technology 2023年第2期133卷 230-237页

作者： Ling Tong Xiaojiao Guo Zhangfeng Shen Lihui Zhou Jingyi Ma Xinyu Chen Honglei Chen Yin Xia Chuming Sheng Saifei Gou Die Wang Xinyu Wang Xiangqi Dong Yuxuan Zhu Xinzhi Zhang David Wei Zhang Sheng Dai Xi Li Peng Zhou Yangang Wang Wenzhong Bao State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China College of Biological Chemical Science and EngineeringJiaxing UniversityJiaxing 314001China Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Institute of Fine ChemicalsSchool of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China

Two-dimensional(2D)semiconductors can be utilized to continually miniaturize nanoscale electronic ***,achieving a practical solution for satisfying electrical contact with 2D semiconductors remains *** this study,we developed a novel contact structure with transferred multilayer(t-ML)MoS 2 by integrating both edge and top *** in-situ plasma treatment for the edge of the MoS 2 channel and successive metal deposition,we achieved 16 times lower contact resistivity(22.8 kΩμm)than that of the top contacted *** thickness-dependent electrical measurement indicates that edge contact is highly effective with thick MoS 2 due to the alleviated current-crowding effect re-sulting from the small contact *** temperature-dependent transport measurement further confirms the effective minimization of the influence from the Schottky barrier and tunnelling ***,the simplified resistor network model and energy-band diagram were proposed to understand the carrier transport *** work provides a practical strategy for achieving excellent electrical contact between bulk metals and 2D semiconductors,paving the way for future large-scale 2D electronic devices.

关键词： Edge contact 2D materials Field-effect transistors Schottky barrier Contact resistance

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CuSx-mediated two reaction systems enable biomimetic photocatalysis in CO_(2) reduction with visible light

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Journal of Energy Chemistry 2022年第2期31卷 497-504页

作者： Ling-Xiang Wang Zhi-Qiang Wang Liang Wang Zhiyuan Yang Qiuyan Zhu Yifeng Liu Wei Fang Xue-Qing Gong Yuefeng Liu Xiaolong Liu Feng-Shou Xiao Key Laboratory of Applied Chemistry of Zhejiang Province Department of ChemistryZhejiang UniversityHangzhou 310028ZhejiangChina Key Lab of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterCentre for Computational Chemistry and Research Institute of Industrial CatalysisSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Dalian National Laboratory for Clean Energy(DNL) Dalian Institute of Chemical Physics(DICP)Chinese Academy of ScienceDalian 116023LiaoningChina State Key Laboratory of Optoelectronic Materials and Technologies School of MaterialsSun Yat-Sen UniversityGuangzhou 510275GuangdongChina

The performances of heterogeneous catalysts can be effectively improved by optimizing the catalysts via appropriate structure ***,we show that the catalysis of cuprous sulfide can be boosted by constructing the hybrid structure with Cu_(2)S nanoparticles on amorphous CuSx matrix(Cu_(2)S/CuSx).In the photocatalytic CO_(2) reduction under visible light irradiation,the Cu_(2)S/CuSx exhibited a CO production rate at 4.0μmol h-1 that is 12-fold higher than that of the general Cu_(2)S *** characterizations reveal that the Cu_(2)S/CuSx has two reaction systems that realize the biomimetic catalysis,involving in the light reaction on the Cu_(2)S nanoparticle-CuSx matrix heterojunctions for proton/electron production,and the dark reaction on the defect-rich CuSx for CO_(2) *** CuSx matrix could efficiently activate CO_(2) and stabilize the split hydrogen species to hinder undesired hydrogen evolution reaction,which benefits the proton-electron transfer to reduce CO_(2),a key step for bridging the two reaction systems.

关键词： CO_(2) Photoreduction Bifunctional catalyst Proton-coupled electron transfer

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