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Design and applications of carbon dots-based ratiometric fluorescent probes:A review

Nano Research 2023年第1期16卷 1064-1083页

作者： Bin-Bin Chen Meng-Li Liu Ya-Ting Gao Shuai Chang Ruo-Can Qian Da-Wei Li Key Laboratory for Advanced Materials Shanghai Key Laboratory of Functional Materials ChemistryFrontiers Science Center for Materiobiology&Dynamic ChemistrySchool of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenShenzhen 518172China Department of Chemistry Laboratory of Advanced MaterialsShanghai Key Lab of Molecular Catalysis and Innovative Materials and State Key Laboratory of Molecular Engineering of PolymersCollege of Chemistry and MaterialsFudan UniversityShanghai 200433China

Ratiometric fluorescence(FL)probes can eliminate the background interference and provide more accurate detection results than single emission intensity-based ***,carbon dots(CDs)-based ratiometric FL probes have received extensive research attention due to their excellent biocompatibility,water solubility,and multi-emission *** this review,we firstly summarize the construction strategies of CDs-based ratiometric FL probes,including physical mixing,nanohybrid,and dual-emitting CDs ***,we classify the sensing types of CDs-based ratiometric FL probes into five categories according to the difference in spectral variation caused by analytes:“single-response-ON”,“single-response-OFF”,“doubleresponses-ON”,“double-responses-OFF”,and“double-responses-Reverse”***,a thorough overview of CDs-based ratiometric FL probe applications in ions,molecules,pH,and temperature sensing is *** believe this review can show the latest research progress of CDs-based ratiometric FL sensing fields and provide perspectives on future developments for the construction of CDs-based ratiometric FL probes and their potential applications.

关键词： carbon dots ratiometric fluorescent probes construction strategy sensing type a review

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Living Crystallization-Driven Self-Assembly of Oligo(p-phenylene vinylene)-Containing Block Copolymers:Impact of Branched Structure of Alkyl Side Chain ofπ-Conjugated Segment

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Chinese Journal of Polymer science 2023年第4期41卷 574-584,I0008页

作者： Yang Song Bo Xiang Xiao-Yu Huang Guo-Lin Lu Chun Feng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai200093China Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200032China

The structure of side chains ofπ-conjugated segments is a critical factor determining living crystallization-driven self-assembly(CDSA),a versatile platform to generate fiber-like nanostructures with precise length and ***,we design and synthesize three block copolymers(BCPs)containing same corona-forming poly(N-isopropyl acrylamide)(PNIPAM)segment,but different core-formingπ-conjugated oligo(p-phenylene vinylene)(OPV)with linear pentyl(l-OPV),racemic 2-methyl butyl(r-OPV)and stereo-regular chiral(S)-2-methyl butyl(c-OPV)side chains,*** using these BCPs of l-OPV-b-PNIPAM_(47),r-OPV-b-PNIPAM_(47)and c-OPV-b-PNIPAM_(47)as model,we aim to get a deep insight into how steric and stereo-regular effect induced by branched alkyl side chains of OPV segment affects the living *** results showed that l-OPV-b-PNIPAM_(47)exhibits typical characteristics of self-seeding and seeded growth of living CDSA to give uniform fiber-like micelles of controlled *** the contrary,r-OPV-b-PNIPAM_(47)and c-OPV-b-PNIPAM_(47)with branched racemic and stereo-regular chiral alkyl side chains are more prone to self-nucleation during the micellar elongation to give short and polydisperse fiber-like *** obvious selfnucleation during the micellar elongation of r-OPV-b-PNIPAM_(47)and c-OPV-b-PNIPAM_(47)is due to the increase of steric repulsion with OPV units induced by branched alkyl side chains,not the stereo-irregular effect of racemic alkyl side chains.

关键词： π-Conjugated polymer Nanofiber Living crystallization-driven self-assembly Structure effect

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Effect of fiber breakage defect and waviness defect on compressive fatigue behavior and damage evolution of 3D multiaxial braided composites

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Chinese Journal of Aeronautics 2025年第2期38卷 491-504页

作者： Yan SUN Yifan ZHANG Tao LIU Yunjuan JING Jun MA Yao LU Chan WANG Xinhai HE Xiaogang CHEN Wei FAN School of Textile Science and Engineering Xi’an Polytechnic UniversityXi’an 710048China Key Laboratory of Advanced Textile Composite Materials Ministry of EducationTiangong UniversityTianjin 300387China Shaanxi Yuanfeng Textile Technology Research Co.LTD. Xi’an 710038China Longi Green Energy Technology Co.LTD. Xi’an 710068China Department of Textile Engineering and Materials School of MaterialsThe University of ManchesterManchester M139PLUK Key Laboratory of Functional Textile Material and Product of Ministry of Education Xi’an Polytechnic UniversityXi’an 710048China

This paper reports the effects of fiber breakage defects and waviness defects on the compressive fatigue behavior and the progressive damage evolution process of 3D Multiaxial Braided composites (3DMBCs). Combined with finite element compression simulation and ultra-depth microscope, the internal defect content of composites with different braiding angles was determined. The results demonstrate that the weakening effect of waviness and fiber breakage defects is greater than the strengthening effect of the braiding angle. This causes the fatigue resistance of 3DMBCs with the 31° braiding angle being better in both directions of 0° and 90°. The increase of 4° waviness and 10% fiber breakage defect results in the average fatigue life of composites being shortened by 48% and the energy consumption rate increased by 10% at 85% stress level in 90° compression direction. The alteration in loading direction modifies the included angle corresponding to the stress component. The stress component parallel to the fiber direction under compressive fatigue load leads to interfacial debonding in the composites, whereas the stress component perpendicular to the fiber direction results in pronounced shear failure.

关键词： Three-dimensional reinforcement Defects Compression fatigue behavior Mechanical properties Crack propagation Numerical analysis

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Probing the interlayer mechanical coupling of 2D layered materials-A review

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Progress in Natural science:Materials International 2022年第5期32卷 528-537页

作者： Yinghui Sun Yufei Sun Rongming Wang Kai Liu Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics University of Science and Technology Beijing State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Key Laboratory of Advanced Materials of Ministry of Education School of Materials Science and Engineering Tsinghua University

Two-dimensional(2D) layered materials are assembled through the intralayer covalent bonds and interlayer van der Waals(vdWs) interactions. The relatively weak interlayer vdWs interactions result in the weak interlayer mechanical coupling between layers, which strongly impacts the overall mechanical properties of multilayer 2D materials or heterostructures. Experimentally probing the interlayer mechanical coupling is of vital importance on the accumulation of fundamental parameters for their applications in flexible and stretchable devices, yet there are hardly comprehensive reviews in this research field. In this review, we firstly introduce the probing methods of interlayer mechanical coupling, including high-frequency and ultralow-frequency Raman characterizations,nanoindentation of multilayer 2D materials or heterostructures, surface indentation, pressurized blister test,characterization of spontaneously formed nanoblisters, and nano-friction tests. Based on the analysis and comparison of the existing methods and results, we also discuss the advantages and limitations of each ***, the challenges and opportunities in this promising field are discussed. This review summarizes the recent progress in the probing of interlayer mechanical coupling of 2D layered materials and will provide important reference for the rational design of flexible and stretchable devices.

关键词： van der Waals interaction Mechanical properties Indentation Heterostructures

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Synthesized robust and thermal stable zirconia aerogel by using N, N-dimethylformamide as a drying inhibitor 4

Synthesized robust and thermal stable zirconia aerogel by us...

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2023 4th International Conference on Material Chemistry and composite Materials, MCCM 2023

作者： Hou, Sifan Sun, Yinjie Zhang, Kai Li, Guoqi Fan, Jinpeng Institute of Advanced Structural Technology Beijing Institute of Technology Beijing100081 China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Beijing Institute of Technology Beijing10081 China Aerospace Research Institute of Materials and Processing Technology Beijing100076 China

N, N-dimethylformamide (DMF) is used as a drying inhibitor to prepare ZrO2 aerogels. The properties were investigated and the result reflected that adding DMF can get bulk aerogels with better mechanical strength (0.51 MPa), lower density (0.38 g/cm3), lower thermal conductivity (0.024 W·m-1·K-1), and higher specific surface area (123.46 m2/g) after heat treatment. Its performance as a drying inhibitor is better than that of formamide (FA). It indicates that DMF can be used as a drying inhibitor to prepare zirconia aerogel with excellent thermal stability and mechanical strength. © Published under licence by IOP Publishing Ltd.

关键词： Aerogels

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A redox-active conjugated microporous polymer cathode for highperformance lithium/potassium-organic batteries

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science China Chemistry 2021年第1期64卷 72-81页

作者： Lian-Wei Luo Chong Zhang Peixun Xiong Yongbo Zhao Wenyan Ma Yu Chen Jing Hui Zeng Yunhua Xu Jia-Xing Jiang Key Laboratory for Macromolecular Science of Shaanxi Province Shaanxi Engineering Laboratory for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710062China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin Key Laboratory of Composite and Functional MaterialsSchool of Materials Science and EngineeringTianjin UniversityTianjin 300072China

Organic redox-active materials have emerged as a class of electrode materials for rechargeable batteries due to their high redox activity,low cost,structure diversity and ***,the high solubility of organic small molecules in organic electrolytes commonly leads to the fast capacity decay with ***,we report a redox-active conjugated microporous polymer of poly(pyrene-co-anthraquinone)(Py Aq)cathode material consisting of pyrene and anthraquinone *** from the highly cross-linked polymer structure with insoluble nature in organic electrolytes,the high surface area and the plentiful redox-active carbonyl groups,the Py Aq cathode demonstrates outstanding electrochemical performances for both lithium-ion batteries(LIBs)and potassium-ion batteries(KIBs).Specifically,the Py Aq cathode for LIBs delivers a high reversible capacity of 169 m Ah g^-1 at the current density of 20 m A g^-1,a high rate capability(142 m Ah g^-1 at 1000 m A g^-1)and an excellent cycling stability for 4000 ***,the Py Aq cathode for KIBs also exhibits a high reversible capacity of143 m Ah g^-1 with a long cycling life over 800 *** excellent electrochemical performance demonstrates that the newly developed Py Aq could be an attractive cathode material for the advanced energy storage technologies.

关键词： conjugated microporous polymers anthraquinone organic cathode material lithium-ion battery potassium-ion battery

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Revealing the origin of single-atom W activity in H_(2)O_(2) electrocatalytic production:Charge symmetry-breaking

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Carbon Energy 2024年第10期6卷 289-300页

作者： Changfei Jing Junyang Ding Peipei Jia Mengmeng Jin Lihui Zhou Xijun Liu Jun Luo Sheng Dai Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyXiqingTianjinChina ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaLonghuaShenzhenChina Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyXuhuiShanghaiChina State Key Laboratory of Featured Metal Materials and Life−cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsMOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanningGuangxiChina

The low-energy electrochemical production of hydrogen peroxide(H_(2)O_(2))has garnered significant attention as a viable alternative to traditional industrial routes,with the goal of achieving carbon *** their H_(2)O_(2) selectivity in the two-electron oxygen reduction reaction(ORR),the coordination environment of tungsten(W)-based materials is *** this study,atomically dispersed W single atoms were immobilized on N-doped carbon substrates by a facile pyrolysis method to obtain a W single-atom catalyst(W-SAC).The coordination environment of an isolated W single atom with a tetra-coordinated porphyrin-like structure in W-SAC was determined by X-ray photoelectron spectroscopy and X-ray absorption spectroscopy ***,the as-prepared W-SAC showed superior two-electron ORR activity in 0.1 M KOH solution,including high onset potential(0.89 V),high H_(2)O_(2) selectivity(82.5%),and excellent *** using differential phase contrast-scanning transmission electron microscopy and density functional theory calculations,it is revealed that the charge symmetry-breaking of W atoms changes the adsorption behavior of the intermediates,leading to enhanced reactivity and selectivity for two-electron *** work broadens the avenue for understanding the charge transfer of W-based electrocatalytic materials and the in-depth reaction mechanism of SACs in two-electron ORR.

关键词： charge symmetry-breaking density functional theory scanning transmission electron microscopy tungsten single-atom catalyst two-electron oxygen reduction reaction

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Constructing inter-diffusive PtCuNi/WO_(3)interface to enhance the catalytic activity and stability in oxygen reduction

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Tungsten 2024年第2期6卷 293-303页

作者： Hao-Zhe Xu Dong Li Ying Chen Pin Fang Xiao-Xing Ke Olga Demidenko Yu-Jing Li Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China Scientifi c-Practical Materials Research Centre National Academy of Sciences of Belarus220072 MinskBelarus

Platinum-group-metal-based alloy nanocrystals have been considered as the most effi cient catalysts for oxygen reduction reaction(ORR).However,the poor stability issues limit their further deployment in *** oxide(WO_(3))has received attention due to its intrinsic electrochemical stability and proton absorption/desorption *** this work,we prepared PtCuNi/WO_(3)/C hybrid catalyst with inter-diff usive alloy/WO_(3)interface on *** catalyst exhibits enhanced activity and stability associated with the WO_(3)*** characterization results suggest that the increased activity originates from the complementary proton supply of non-stoichiometric H_(x)WO_(3).Moreover,WO_(3)prevents the particle from dissolution and detachment under vigorous electrochemical *** enhanced stability originates from the electronic interaction established between Pt and *** work provides new strategies to design high-performance ORR catalysts by taking the merits of WO_(3)。

关键词： Tungsten oxide PtCuNi Interface Electronic interaction

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Crystal-Collapse-Induced Synthesis of High-Capacitance LaCoO_(x)/Co-Doped Carbon-Based Supercapacitors

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Transactions of Tianjin University 2025年第1期31卷 29-41页

作者： Zhihao Deng Yuanbo Wang Wu Shao Jingwen He Jie Sheng Ronghao Cen Yufei Fu Wenjun Wu Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Shanghai Key Laboratory of Functional Materials ChemistryFeringa Nobel Prize Scientist Joint Research CenterInstitute of Fine ChemicalsFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China

The development of high-performance,reproducible carbon(C)-based supercapacitors remains a significant challenge because of limited specific ***,we present a novel strategy for fabricating LaCoO_(x) and cobalt(Co)-doped nanoporous C(LaCoO_(x)/Co@ZNC)through the carbonization of Co/Zn-zeolitic imidazolate framework(ZIF)crystals derived from a PVP-Co/Zn/La *** unique ZIF structure effectively disrupted the graphitic C framework,preserved the Co active sites,and enhanced the electrical *** synergistic interaction between pyridinic nitrogen and Co ions further promoted redox *** addition,the formation of a hierarchical pore structure through zinc sublimation facili-tated electrolyte *** resulting LaCoO_(x)/Co@ZNC exhibited exceptional electrochemical performance,delivering a remarkable specific capacitance of 2,789 F/g at 1 A/g and outstanding cycling stability with 92%capacitance retention after 3,750 *** findings provide the basis for a promising approach to advancing C-based energy storage technologies.

关键词： Supercapacitor High capacitance Carbon electrode Doping Crystal-collapse

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Application of Ag-based materials in high-performance lithium metal anode:A review

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材料科学技术（英文版） 2023年第2期133卷 165-182页

作者： Zhongxiu Liu Sihu Ha Yong Liu Fei Wang Feng Tao Binrui Xu Renhong Yu Guangxin Wang Fengzhang Ren Hongxia Li Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science & Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science & Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of High-Temperature Structural and Functional MaterialsHenan University of Science and TechnologyLuoyang 471003China School of Electrical Engineering Henan University of Science and TechnologyLuoyang 471023China State Key Laboratory of Advanced Refractories Sinosteel Luoyang Institute of Refractories Research Co.Ltd.Luoyang 471039China

Li metal is a promising candidate for battery anodes due to its high theoretical specific capacity(3860 mAh g-1)and low electrochemical potential(-3.04 V).Nevertheless,the challenges for Li metal include uncontrolled dendrites growth,unstable solid electrolyte interface,and infinite volume expansion during Li plating and stripping,which limit the further development of lithium metal anodes(LMAs).Intro-ducing Ag-based materials in LMAs is regarded as one of the most effective solutions to solve the above-mentioned problems,which have received considerable attention because of their superior characteristics,such as high electrical conductivity,outstanding lithiophilicity,and excellent mechanical ***,we review the recent progress on the application of Ag-based materials in ***,the theo-retical mechanism of Ag-based materials and their advantages in LMAs are *** addition,the relationship between their fabrication strategies,micro/nanostructures,and electrochemical performances is systematically ***,the challenges and opportunities for the future research and appli-cation of Ag-based materials in lithium metal batteries are proposed based on the available academic knowledge.

关键词： Ag-based materials Nucleation sites Current collectors Lithium metal anodes Electrochemical performance

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