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A Single-Fluorophore Multicolor Molecular Sensor That Visually Identifies Organic Anions Including Phosphates

CCS Chemistry 2024年第3期6卷 774-782页

作者： Zezhou Zong Qi Zhang Da-Hui Qu Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237

Developing fluorescent sensors for small-molecule phosphates offers opportunities in optically detecting biorelevant reactions and ***,it remains elusive how to identify phosphates from other anions,such as carboxylates and sulfates,because current synthetic phosphate receptors lack *** we report the construction of a multicolor fluorescent sensor that can identify phosphates from other analogous *** key design principle is to take advantage of the highly sensitive conformation-dependent emissive wavelength of diphenyl-9,14-dihydrodibenzo[a,c]phenazine fluorophores to sense the minor structural differences between phosphates and other anions,for example,sulfates and *** effect of structural factors such as spacer length and urea versus thiourea has been investigated by comparing the optical properties and binding affinities with the phosphate *** strategy provides a simple and robust fluorescent sensing solution to optically analyze small-molecule phosphates with antiinterference performance.

关键词： fluorescent sensors photoluminescence host-guest chemistry supramolecular chemistry noncovalent bonds

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Natural potential difference induced functional optimization mechanism for Zn-based multimetal bone implants

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Bioactive Materials 2025年第2期44卷 572-588页

作者： Jing Xu Zhenbao Zhang Jianhui Wang Yuhan Qi Xiaohong Qi Yijie Liang Manxi Li Haixia Li Yantao Zhao Zhuangzhuang Liu Yanfeng Li Medical School of Chinese PLA Beijing100039China Department of Stomatology The Fourth Medical Centre of PLA General HospitalBeijing100048China Key Laboratory for Advanced Materials Processing Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China Senior Department of Orthopedics The Fourth Medical Centre of PLA General HospitalBeijing100048China Beijing Engineering Research Center of Orthopedics Implants Beijing100048China Institute of Process Engineering Chinese Academy of SciencesBeijing100190China

Zn-based biodegradable metals(BMs)are regarded as revolutionary biomaterials for bone ***,their clinical application is limited by insufficient mechanical properties,delayed in vivo degradation,and overdose-induced Zn^(2+)***,innovative multi-material additive manufacturing(MMAM)is deployed to construct a Zn/titanium(Ti)hetero-structured *** biodegradation and biofunction of Zn exhibited intriguing characteristics in composites.A potential difference of about 300 mV naturally existed between Zn and *** natural potential difference triggered galvanic coupling corrosion,resulting in 2.7 times accelerated degradation of *** excess release of Zn^(2+)induced by accelerated degradation enhanced the antibacterial function.A voltage signal generated by the natural potential difference also promoted in vitro osteogenic differentiation through activating the PI3K-Akt signaling pathway,and inhibited the toxicity of overdose Zn^(2+)in vivo,significantly improving bone ***,MMAM technology allows for the specific region deployment of *** the future,Ti and Zn could be respectively deployed in the primary and non-loadbearing regions of bone implants by structural designs,thereby achieving a functionally graded application to overcome the insufficient mechanical properties of Zn-based *** work clarifies the functional optimization mechanism for multimetal bone implants,which possibly breaks the application dilemma of Zn-based BMs.

关键词： Multi-material additive manufacturing Biodegradable metal Zn/Ti Potential difference Bone repair

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Enhanced charge separation by interchain hole delocalization in nonfullerene acceptor-based bulk heterojunction materials

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Carbon Energy 2023年第7期5卷 27-37页

作者： Chang-Mok Oh Sujung Park Jihoon Lee Sung Heum Park Shinuk Cho In-Wook Hwang Advanced Photonics Research Institute Gwangju Institute of Science and TechnologyGwangjuRepublic of Korea Department of Physics and Energy Harvest Storage Research Center University of UlsanUlsanRepublic of Korea Department of Physics Pukyong National UniversityBusanRepublic of Korea

Bulk heterojunction(BHJ)composites show improved power conversion efficiencies when optimized in terms of morphology using various film processing methods.A reduced carrier recombination loss in an optimized BHJ was characterized ***,the driving force that leads to this reduction was not clearly *** this study,we focus on the decreased carrier recombination loss and its driving force in optimized nonfullerene acceptor-based PTB7-Th:IEICO-4F BHJ *** demonstrate that the optimized BHJ shows deactivation in the sub-nanosecond nongeminate carrier recombination *** driving force for this deactivation was determined to be the improved interchain hole delocalization between the *** enhanced interchain hole delocalization was observed using steady-state photoinduced absorption(PIA)*** particular,increased splitting between the polaron PIA bands was ***,improved interchain hole delocalization was observed for other state-of-the-art BHJ materials,including D18:Y6 with optimized morphologies.

关键词： bulk heterojunction interchain hole delocalization nonfullerene acceptor photoinduced absorption spectroscopy solar cell

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NEW DRUG DELIVERY SYSTEM WITH CATECHIN LOADED IN MESOPOROUS SILICA NANOPARTICLES

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UPB Scientific Bulletin, Series B: Chemistry and Materials science 2024年第3期86卷 15-28页

作者： Petrisor, Gabriela Motelica, Ludmila Ficai, Denisa Trusca, Roxana Doina Surdu, Adrian Vasile Voicu, Georgeta Oprea, Ovidiu Cristian Ficai, Anton Science and Engineering of Oxide Materials and Nanomaterials Faculty of Chemical Engineering and Biotechnologies National University of Science and Technology POLITEHNICA Bucharest Romania National Research Center for Food Safety National University of Science and Technology POLITEHNICA Bucharest Romania National Center for Micro and Nanomaterials National University of Science and Technology POLITEHNICA Bucharest Romania Department of Inorganic Chemistry Physical Chemistry and Electrochemistry Faculty of Applied Chemistry and Materials Science National University of Science and Technology POLITEHNICA Bucharest Romania Academy of Romanian Scientists Bucharest Romania

Catechin is a polyphenol found in high quantities in green tea and its properties make it have a high potential to be used in controlled release systems with important activity on the human body. Mesoporous systems loaded with catechin have the potential to be used in drug delivery systems with different biological applications imposed by the support itself (suitable for bone-related application) or by the nature and properties of the loaded biological active agents. In this study, catechin was loaded into mesoporous silica: MCM-41 and MCM-48. The obtained mesoporous systems were characterized from a morphological and structural point of view and the release of catechin from mesoporous silica in two simulated biological fluids was monitored. © 2024, Politechnica University of Bucharest. All rights reserved.

关键词： Mesopores

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Passive on-chip isolators based on the thin-film lithium niobate platform

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Chinese Physics B 2025年第3期34卷 408-413页

作者： Jiacheng Liu Gongyu Xia Qilin Hong Pingyu Zhu Kai-Kai Zhang Keyu Xia Ping Xu Shiqiao Qin Zhihong Zhu College of Advanced Interdisciplinary Studies&Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices National University of Defense TechnologyChangsha 410073China Institute for Quantum Information and State Key Laboratory of High-Performance Computing College of Computer Science and TechnologyNational University of Defense TechnologyChangsha 410073China College of Engineering and Applied Sciences National Laboratory of Solid State Microstructuresand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China

Optical isolators,the photonic analogs of electronic diodes,are essential for ensuring the unidirectional flow of light in optical systems,thereby mitigating the destabilizing effects of back ***-film lithium niobate(TFLN),hailed as“the silicon of photonics,”has emerged as a pivotal material in the realm of chip-scale nonlinear optics,propelling the demand for compact optical *** report a breakthrough in the development of a fully passive,integrated optical isolator on the TFLN platform,leveraging the Kerr effect to achieve an impressive 10.3 dB of isolation with a minimal insertion loss of 1.87 *** theoretical simulations have demonstrated that our design,when applied to a microring resonator with a Q factor of 5×10^(6),can achieve 20 dB of isolation with an input power of merely 8 *** advancement underscores the immense potential of lithium niobate-based Kerr-effect isolators in propelling the integration and application of high-performance on-chip lasers,heralding a new era in integrated photonics.

关键词： thin-film lithium niobate Kerr effect optical isolator

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A SiC 3D Power IC Directly Integrating a Power MOSFET With Its CMOS Gate Driver Using Flip Chip Bonding 35

A SiC 3D Power IC Directly Integrating a Power MOSFET With I...

引用

35th International Symposium on Power Semiconductor Devices and ICs, ISPSD 2023

作者： Yao, Atsushi Okamoto, Mitsuo Sato, Shinji Yamaguchi, Daiki Sato, Hiroshi Advanced Power Electronics Research Center National Institute of Advanced Industrial Science and Technology Tsukuba Ibaraki305-8569 Japan

ISBN: (纸本)9798350396829

In this study, the first 3D direct integration of a SiC power MOSFET and its SiC CMOS gate driver is achieved using flip chip bonding, enabling a wire bondless connection. Switching operation of the resulting 'SiC 3D power IC' is achieved experimentally at 600 V and 20 A for the first time at speeds of 102 and 67.0 V/ns for turn-on and turn-off operations, respectively. Further experiments demonstrated that the switching speed of the first version of the SiC 3D power IC is improved by over 14% compared to previous devices using wire bonding (wire bonding devices). Numerical predictions indicate that the SiC 3D power IC has the potential to more than double the switching speed of wire bonding devices and realizes switching speeds of 300 V/ns or more if the gate resistance is decreased. © 2023 IEEE.

关键词： CMOS integrated circuits

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Revealing structural degradation in layered structure oxides cathode of lithium ion batteries via in-situ transmission electron microscopy

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Journal of Materials science & technology 2023年第23期154卷 189-201页

作者： Fanjie Xia Weihao Zeng Haoyang Peng Hong Wang Congli Sun Ji Zou Jinsong Wu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Nanostructural Research Center (NRC) Wuhan University of Technology Wuhan 430070 China Hubei Longzhong Laboratory Xiangyang 441000 China

Transition metal oxides with layered structure have been widely used as cathode materials for lithium-ion batteries(LIBs)which have relatively high energy density,large capacity and long ***,in the long-term electrochemical cycle,the inevitable degradation of performance of LIBs due to structural degradation in cathodes severely restricts their large-scale practical *** the underlying mechanism of structural degradation is the most critical scientific ***,in situ transmission electron microscopy(TEM)has become a useful tool to study the structural and compositional evolutions at atomic scale in electrochemical reactions,which provided a unique and in-depth understanding of the structural *** this review,we discuss the recent advances in the in situ TEM,focusing on its role in revealing the structural degradation mechanisms in the four key places:(1)the interface between the cathodes and electrolyte;(2)the cathode surface;(3)the particle interior and(4)those induced by thermal *** insight gained by the in-situ TEM which is still developing at its fast pace is unique and expected to provide guidance for designing better layered cathode materials.

关键词： Li-ion battery Layered cathodes Structural degradations Electron microscopy In-situ

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Mesoporous organic solar cells

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Chinese Chemical Letters 2024年第11期35卷 465-469页

作者： Chengcheng Xie Chengyi Xiao Hongshuo Niu Guitao Feng Weiwei Li Engineering Research Center for Energy Conversion and Storage Technology of Guizhou School of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong SAR 999077China

The device configuration with mesoporous titanium dioxide(m-TiO2)has garnered considerable attention as a promising solution for high-stable perovskite and dye-sensitized solar cells,although its application in organic solar cells remains *** this communication,we have incorporated this structure into both bulk-heterojunction(BHJ)and single-component organic solar cells(SCOSCs).Surprisingly,mesoporous OSCs(M-OSCs)demonstrate a deteriorative efficiency in BHJ-type cells,whereas this configuration succeeds in SCOSCs,exhibiting competitive performance with planar OSCs(P-OSCs).This pioneering study has resulted in a competitive power conversion efficiency of 9.67%for m-TiO_(2)-based cells,marking a significant milestone in the advancement of ***,profiting from the better ultraviolet resistance of m-TiO_(2)than zinc oxide,this M-OSC exhibits superior photostability than that of P-OSCs when subjected to continuous one-sun(AM1.5G)*** its entirety,this research not only introduces the concept of M-OSCs for the first time but also unveils a novel device architecture poised to address the long-term stability concerns within the realm of OSCs.

关键词： Mesoporous titanium dioxide Single-component organic solar cells Bulk-heterojunction Ultraviolet resistance Photostability

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Improved surface hydrophobicity of self-assembled transport layers enables perovskite/silicon tandem solar cells with efficiency approaching 31%

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Journal of Energy Chemistry 2025年第5期104卷 749-755页

作者： Jing Yang Jin Wang Biao Shi Yixin Dong Dongxue Liu Shenhzhi Xu Qian Huang Xiaona Du Fu Zhang Miao Yang Yongcai He Bo He Xiaoning Ru Shengzhong Liu Xixiang Xu Pengyang Wang Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterState Key Laboratory of Photovoltaic Materials and CellsNankai UniversityTianjin 300350China Three Gorges Corporation Science and Technology Research InstituteBeijing 101199China Tianjin Key Laboratory of Efficient Utilization of Solar Energy Tianjin 300350China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina LONGi Central R&D Institute LONGi Green Energy Technology Co.Ltd.Xi’an 710018ShaanxiChina

[4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid(Me-4PACz)self-assembled monolayer(SAM)as the hole transport materials have been demonstrated remarkable potential in perovskite solar cells(PSCs).However,the hydrophobicity of Me-4PACz presents a critical challenge for the fabrication of high-quality perovskite films due to its poor ***,a doped Al_(2)O_(3)with Me-4PACz to modify the Me-4PACz surface was *** one hand,this approach improved the wettability of the Me-4PACz film,enhancing the coverage,uniformity,and buried interface properties of the perovskite *** the other hand,compared to Al_(2)O_(3)modification alone,doping Al_(2)O_(3)with Me-4PACz allowed direct contact between the perovskite and Me-4PACz,resulting in better buried interface *** a result,we achieved an efficiency of 22.71%for single-junction wide-bandgap perovskite solar cells(1.68 eV).Additionally,the efficiency of perovskite/silicon tandem solar cells was improved from 28.68%to 30.92%,with a significant reduction in ***,the tandem cells demonstrated no degradation after 4200 s of operation at the maximum power point.

关键词： Me-4PACz Tandem solar cell Perovskite/silicon Hydrophic

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Portable fluorogenic probe for monitoring of volatile amine vapour and food spoilage

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Chinese Chemical Letters 2024年第3期35卷 257-261页

作者： Jian-Hao Zhao Wen-Xing Xu Bin Li Wei Xu Wu-Kun Zhang Ming-Shuai Yuan Hui-Zi Li Qing-Guo He Xiang Ma Jian-Gong Cheng Yan-Yan Fu State Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of the Chinese Academy of SciencesBeijing 100039China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

There are urgent needs of volatile amine gas sensors with high-performance in food quality control,disease monitoring and environmental ***-film fluorescent probe is suitable for amine vapour sensing due to its high sensitivity,high selectivity,and no polluting ***,a novel fluorescent probe based on indacenodithiophene structure withπconjugated system was designed and *** experimental results show that the films prepared by this material exhibit rapid and distinct fluorescence quenching after being exposed to saturated vapours of primary amine,secondary amine and tertiary amine represented by n-propylamine,diethylamine and trimethylamine,*** quenching of fluorescence is 84%,87%and 96%,respectively,within 10 *** detection mechanism of probe for primary amine is based on specific chemical reaction,while the detection mechanism for secondary amine and tertiary amine is intramolecular charge *** experiments show that the detection limit of the fluorescent probe for trimethylamine,an important marker of food spoilage,could reach 4.610 ***-site detection based on spoilage of small yellow croaker suggests the material possesses the potential for food freshness *** simple fluorogenic probe is an original approach to simplify real-time visual monitoring of volatile amine vapour.

关键词： Fluorescent probe Volatile amine Gas sensing Trimethylamine Food spoilage

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