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Recent progress on the excited-state multiple proton transfer process in organic molecules

Science China Chemistry 2022年第10期65卷 1843-1853页

作者： Wan-Ying Yang Chang-Cun Yan Xue-Dong Wang Liang-Sheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa 999078China

In contrast to the widely reported excited-state single proton-transfer,excited-state multiple proton transfer(ESMPT)containing two or more intra-or inter-molecular proton transfers has greatly expanded the research scope of the excited-state proton *** recent decades,ESMPT-active organic molecules have attracted much attention owing to their unique photophysical properties,such as large magnitude Stokes shifts and dual *** photophysical properties facilitate the application of the organic molecules in organic solid-state lasers,fluorescent probes and sensors,and molecular ***,we introduce the fundamentals of the ESMPT and review the recent advances in different types of ESMPTs in organic ***,we present our conclusions and the future development prospects of the ESMPT in organic molecules.

关键词： excited-state multiple proton transfer hydrogen bond photoisomerization organic molecules photophysical properties

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Moisture is not always bad:H_(2)O accelerates the conversion of DMAPbI_(3) intermediate to CsPbI_(3)for boosting the efficiency of carbon-based perovskite solar cells to over 16%

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Fundamental Research 2024年第5期4卷 1110-1117页

作者： Hailiang Wang Huicong Liu Zijing Dong Xueyuan Wei Weiping Li Liqun Zhu Cheng Zhu Yang Bai Haining Chen School of Materials Science and Engineering Beihang UniversityBeijing 100191China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications MIIT Key Laboratory for Low-dimensional Quantum Structure and DevicesExperimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China

Inorganic CsPbI_(3)perovskite has exhibited great application potential in perovskite solar cells(PSCs)due to its suitable optical bandgap and high chemical ***,the perovskite phases of CsPbI_(3)are not stable at room temperature,where they transition to non-perovskite *** or water has been thought to be the primary factor inducing this phase transition,which should be avoided throughout the procedure of film and device ***,the present study indicates that preparing a precursor solution in humid air is beneficial to the growth of high-quality CsPbI_(3)perovskite to enhance device *** is demonstrated that the incorporation of H2O in the precursor solution from humid air or by intentional addition significantly changes the composition of coordination compounds and increases the amount of low iodine coordination *** a result,the crystallization of dimethylammonium lead iodide(DMAPbI_(3))intermediate is suppressed well,which accelerates its subsequent conversion to CsPbI_(3)***,an oriented CsPbI_(3)perovskite film with improved crystallinity and lower defect density is *** importantly,carbon-based PSCs(C-PSCs)based on the CsPbI_(3)perovskite film achieve an efficiency of 16.05%,a new record for inorganic C-PSCs.

关键词： Inorganic perovskite CsPbI_(3) Carbon electrode Solar cells Water

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Iron-based layered double hydroxide packed with metal-organic frameworks for enhanced overall water-splitting electrocatalysis

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Tungsten 2024年第4期6卷 859-868页

作者： Long Chen Yun Luo Zhi-Peng Yu Yi-Kun Cheng Yang Zheng Li He Jia-Hao Xiong Wen-Wen Kong Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi832003China Institute of Scientific Research Luzhou North Chemistry Industry Co.LtdLuzhou646600China International Iberian Nanotechnology Laboratory(INL) Avenida Mestre Jose Veiga4715-330BragaPortugal CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Key Laboratory of Electronic Information Materials and DevicesCenter of Materials Science and Optoelectronics EngineeringXinjiang Technical Institute of Physics and Chemistry of CASUrumqi830011China

Designing hybrid materials with numerous catalytic active sites,high specific surface area,and interfacial interactions is an effective strategy to improve electrocatalytic *** this work,iron-based metal organic frameworks(Fe-MOFs)@(Co,Ni)Fe-layered double hydroxide(LDH)is successfully constructed using the similar"MOF growing on LDH"strategy for oxygen evolution reaction and hydrogen evolution reaction in the alkaline *** synthesized hybrid materials in this particular way show excellent electrochemical overall water-splitting performance with the cell voltage of 1.62 V at10 mA·cm^(-2) in the alkaline environment due to the optimized adsorption/desorption properties of metal ions on oxygencontaining species and interfacial effects of hybrid ***-MOFs@(Co,Ni)Fe-LDH also exhibits excellent hydrogen and oxygen production efficiency of 370 and 175μL·min^(-1),*** work draws on an effective approach to the fabrication of MOF@LDH structures and provides new insights into overall water-splitting in alkaline conditions.

关键词： Metal-organic frameworks(MOFs) Layered double hydroxide Electrocatalysis Water splitting Interfacial interactions

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Gigahertz frequency hopping in an optical phase-locked loop for Raman lasers

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Chinese Physics B 2024年第2期33卷 60-65页

作者：毛德凯税鸿冕殷国玲彭鹏王春唯周小计 State Key Laboratory of Advanced Optical Communication System and Network School of ElectronicsPeking UniversityBeijing 100871China Institute of Carbon-based Thin Film Electronics Peking UniversityTaiyuan 030012China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China Institute of Advanced Functional Materials and Devices Shanxi UniversityTaiyuan 030031China

Raman lasers are essential in atomic physics,and the development of portable devices has posed requirements for time-division multiplexing of Raman *** demonstrate an innovative gigahertz frequency hopping approach of a slave Raman laser within an optical phase-locked loop(OPLL),which finds practical application in an atomic gravimeter,where the OPLL frequently switches between near-resonance lasers and significantly detuned Raman *** method merges the advantages of rapid and extensive frequency hopping with the OPLL’s inherent low phase noise,and exhibits a versatile range of applications in compact laser systems,promising advancements in portable instruments.

关键词： Raman lasers optical phase-locked loop frequency hopping

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Self-generating nanogaps for highly effective surface-enhanced Raman spectroscopy

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Nano Research 2022年第4期15卷 3496-3503页

作者： Yangkai Chen Huan Li Jianmei Chen Dong Li Mengyuan Zhang Guanghua Yu Lin Jiang Yi Zong Bin Dong Zhoufang Zeng Yandong Wang Lifeng Chi Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Institute of Functional Nano&Soft Materials(FUNSOM)Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Research and Development Center for Genetics Resource Chinese Academy of SciencesChangzhou 213000China Institute of Genetics and Development Biology Chinese Academy of SciencesBeijing 100101China

The fabrication of surface enhanced Raman spectroscopy(SERS)substrates with controlled high density hot spots still remains ***,we report highly effective SERS substrates containing the self-generating(SG)nanogaps from polystyrene nanosphere monolayer through isotropic plasma *** emergence of multimode hot spots,i.e.,metal film over nanosphere(MFON)-like hot spots(closed gaps,0 nm),individual self-aligned hot spots(discrete gaps,>20 nm)and threedimensional(3D)hot spots(nanogaps,1-10 nm),makes the SG SERS substrates superior as compared to the traditional MFON or the well-ordered self-aligned SERS substrates in terms of enhancement,uniformity,and *** SG SERS substrates can function as the excellent SERS platforms for trace molecule detection in the practical application fields.

关键词： surface-enhanced Raman spectroscopy nanogaps colloidal lithography reactive ion etching

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Ba_(2)B_(9)O_(13)F_(4)·BF_(4):first fluorooxoborate with unprecedented infinite [B_(18)O_(26)F_(8)] tubes and deep-ultraviolet cutoff edge

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Science China Chemistry 2023年第4期66卷 1073-1077页

作者： Huan Pei Xuefei Wang Jie Zhang Fangfang Zhang Zhihua Yang Shilie Pan Research Center for Crystal Materials CAS Key Laboratory of Functional Materials and Devices for Special EnvironmentsXinjiang Technical Institute of Physics and ChemistryChinese Academy of SciencesUrumqi 830011China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Fluorooxoborate has emerged as a promising system for exploring optical materials due to their rich structural chemistry and physicochemical properties,yet so far not fully ***,we report a new fluorooxoborate,Ba_(2)B_(9)O_(13)F_(4)·BF_(4),which contains the greatest variety of structural basic units,[BO_(3)],[BO_(2)F_(2)],[BO_(3)F],and[BF_(4)],and exhibits unprecedented 1D infinite[B_(18)O_(26)F_(8)]*** unique structure avoids the dangling bonds caused by terminal oxygens,which is beneficial to the large bandgap and deep-ultraviolet cutoff *** article expands the crystal structure of fluorooxoborates and contributes to the exploration of deep-ultraviolet optical materials in fluorooxoborate systems.

关键词： fluorooxoborate unprecedented infinite tubes four basic units deep-ultraviolet

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Acceptor-planarized typeⅠphotosensitizer for lipid droplet-targeted two-photon photodynamic therapy by ferroptosis

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Science China Chemistry 2024年第7期67卷 2392-2402页

作者： Jie Sha Weimin Liu Jiasheng Wu Yanping Wang Xuewei Li Haohui Ren Zhi Pang Wenjun Zhang Chun-Sing Lee Pengfei Wang Key Laboratory of Photochemical Conversion and Optoelectronic Materials CityU-CAS Joint Laboratory of Functional Materials and DevicesTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China Center of Super-Diamond and Advanced Films&Department of Materials Science and Engineering City University of Hong KongHong KongChina

Two-photon photodynamic therapy(TP-PDT)has garnered significant attention because of its excellent depth of tissue penetration and high spatiotemporal ***,the limited targeting ability and oxygen dependency of photosensitizers(PSs)significantly hinder the effectiveness of photodynamic therapy in hypoxic tumor ***,we designed and synthesized two lipid droplet(LD)-targeted two-photon PSs(TBPCP and TBCP)by reducing benzene rings to achieve“acceptor planarization”.Notably,acceptor planarization not only enhanced the intramolecular charge transfer but also transferred the photochemical reaction from typeⅡ(TBPCP)to typeⅠ(TBCP).Under the irradiation of 940 nm femtosecond pulsed laser,TBPCP and TBCP showed bright two-photon-excited fluorescence and excellent LD targeting in living *** TBPCP(typeⅡPS),the outstanding TP-PDT efficacy of TBCP(typeⅠPS)under hypoxic conditions could be obtained in both cellular experiments and multicellular tumor spheroids(MCTS)***,both TBPCP and TBCP could induce the lipid peroxidation in the typeⅠor typeⅡPDT due to the location of LD,depleting GSH and inactivating GPX4 to induce nonprogrammed ferroptosis in cells.

关键词： two-photon photodynamic therapy lipid droplet targeting acceptor planarization hypoxia tumor ferroptosis

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Amyloid-Like Protein Coating as a Barrier Against Plasticizer Leaching

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CCS Chemistry 2025年第2期7卷 493-506页

作者： Facui Yang Mengjie Li Jingwen Xiong Xiaopeng Lv Xuehao Ma Weixing Chen Peng Yang Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices Engineering Research Center of Light Stabilizers for Polymer MaterialsUniversities of Shaanxi ProvinceSchool of Materials and Chemical EngineeringXi’an Technological UniversityXi’an 710021 Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119

Phthalate plasticizers can cause reproductive system problems and women’s infertility as an endocrine interferon due to easy migration or leaching from *** of the coatings used for plastic surface modification exhibit limited efficacy in preventing plasticizer migration,and have the disadvantages of complex preparation methods and lack of interfa-cial ***,a dense proteinaceous/polysaccharide coating self-assembled from amy-loid-like aggregates is formed on the surface of *** coating exhibits excellent antiplasticizer migration properties and stable interfacial adhesion robustness,thereby guaranteeing optimal effective-ness when subjected to external forces such as bend-ing,stretching,tearing,and flowing water,in order to comply with the migration limit set by the European Union *** leaching amount of plasticizer is reduced 83.8-99.9%in different leaching media compared to the uncoated ***,for medical plastics with coated phase-transitioned lysozyme/sodium alginate,including hemodialysis tubes,infusion tubes,and blood bags,the plasticizer concentration in the leaching solution was reduced by∼92%.The coating also exhibits an excellent resistance to the nonspecific adsorption of active substances(drugs,platelets,and bacteria).This study provides a strategy for application of bio-polymer-based coatings in food and medical pack-aging materials toward the inhibition of plasticizer migration.

关键词： phthalate plasticizers plasticizer migra-tion amyloid-like coating medical plastics migra-tion stability

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Thermoelectric transport properties of p-type Bi_(2)Se_(3)-Sb_(2)Se_(3)-In_(2)Se_(3) high entropy compounds

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Rare Metals 2024年第7期43卷 3415-3421页

作者： Feng Jiang Cheng-Liang Xia Yong-Bin Zhu Jun Li Yue Chen Wei-Shu Liu Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

The introduction of entropy concept into thermoelectric materials recently has attracted broad ***,we showed the phase diagram of the ternary systems of Bi_(2)Se_(3)-Sb_(2)Se_(3)-In_(2)Se_(3).Among the high entropy compounds (HECs),we have identified an intrinsic p-type region near our previously reported Bi_(0.8)Sb_(0.8)In_(0.4)Se_(3) in the phase diagram.

关键词： entropy (3) compounds

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Integration of urchin-like MnCo_(2)O_(4)@C core–shell nanowire arrays within porous copper current collector for superior performance Li-ion battery anodes

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Rare Metals 2024年第2期43卷 599-611页

作者： Xue-Ru Zhang Qiong Wu Yong Zhang Xi-Fei Li Ting Xie Yu-Cheng Wu Instrumental Analysis Center Hefei University of TechnologyHefei230009China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei230009China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China Institute of Advanced Electrochemical Energy Xi’an University of TechnologyXi’an710048China

Spinel MnCo_(2)O_(4) is a promising energy storage candidate as anode materials in lithium-ion batteries owing to synergistic effects of two intrinsic solid-state redox ***,low conductivity,poor rate capacity and rapid capacity fading have seriously impaired its practical *** overcome the inferiorities,urchin-like MnCo_(2)O_(4)@C core–shell nanowire arrays have been fabricated directly within a porous copper current collector via a facile hydrothermal method followed by a chemical vapor deposition carbonization *** a typical nanowire,the core is composed of interconnected MnCo_(2)O_(4)nanoparticles and the shell shows as a thin amorphous carbon *** integrated MnCo_(2)O_(4)@C/Cu structure could act as working anodes without using additives or polymer *** MnCo_(2)O_(4)@C/Cu possesses slightly longer Li-ion insertion/desertion pathway than that of MnCo_(2)O_(4)/Cu,the carbon shell could effectively prevent the pulverization of MnCo_(2)O_(4) and lower down charge transfer resistance and actively participate in Li-ion *** rearrangement of carbon atoms during lithiation/delithiation cycling could inhibit the formation of passive solid electrolyte interphase *** a result,the MnCo_(2)O_(4)@C/Cu electrode presents superior rate capacity(600 mAh·g^(−1) at 1 A·g^(−1)) and better stability(797 mAh·g^(−1) after 200 cycles at 100 mA·g^(−1)).The excellent reversible Li ion storage capacity,cycling stability and rate capacity endow MnCo_(2)O_(4)@C/Cu great potential as stable and high output integrated anode materials in Li-ion batteries.

关键词： MnCo_(2)O_(4)@C Urchin-like nanowire arrays Core-shell Integrated anode materials Lithium-ion batteries

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