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Precise Design and Deliberate Tuning of Turn-On Fluorescence in Tetraphenylpyrazine-Based Metal-Organic Frameworks

Research 2023年第1期2022卷 341-351页

作者： He-Qi Zheng Lin Zhang Mengting Lu Xiaoyan Xiao Yu Yang Yuanjing Cui Guodong Qian State Key Laboratory of Silicon Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science EngineeringZhejiang UniversityHangzhou 310027China

The manipulation on turn-on fluorescence in solid state materials attracts increasing interests owing to their widespread *** we report how the nonradiative pathways of tetraphenylpyrazine(TPP)units in metal-organic frameworks(MOFs)systems could be hindered through a topological design *** MOFs single crystals of different topology were constructed via the solvothermal reaction of a TPP-based 4,4',4",4"-(pyrazine-2,3,5,6-tetrayl)tetrabenzoic acid(H,TCPP)ligand and metal cations,and their mechanisms of formation have been *** with the innate lowfrequency vibrational modes of flu net Tb-TCPP-1,such as phenyl ring torsions and pyrazine twists,Tb-TCPP-2 adopts a shp net,so the dihedral angle of pyrazine ring and phenyl arms is larger,and the center pyrazine ring in TPP unit is coplanar,which hinders the radiationless decay of TPP moieties in *** Tb-TCPP-2 exhibits a larger blue-shifted fluorescence and a higher fluorescence quantum yield than Tb-TCPP-1,which is consistent with the reduced nonradiative ***,Density functional theory(DFT)studies also confirmed aforementioned tunable turn-on fluorescence *** work constructed TPP-type MOFs based on a deliberately topological design approach,and the precise design of turn-on fluorescence holds promise as a strategy for controlling nonradiative pathways.

关键词： mechanism. pyrazine phenyl

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Tuning the electronic structure of a metal-organic framework for an efficient oxygen evolution reaction by introducing minor atomically dispersed ruthenium

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Carbon Energy 2023年第2期5卷 61-71页

作者： Yuwen Li Yuhang Wu Tongtong Li Mengting Lu Yi Chen Yuanjing Cui Junkuo Gao Guodong Qian State Key Laboratory of Silicon Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science and EngineeringZhejiang UniversityHangzhouZhejiangChina Institute of Functional Porous Materials School of Materials Science and EngineeringZhejiang Sci-Tech UniversityHangzhouZhejiangChina

The establishment of efficient oxygen evolution electrocatalysts is of great value but also ***,a durable metal–organic framework(MOF)with minor atomically dispersed ruthenium and an optimized electronic structure is constructed as an efficient ***,the obtained NiRu_(0.08)-MOF with doping Ru only needs an overpotential of 187 mV at 10 mA cm^(-2) with a Tafel slop of 40 mV dec^(-1) in 0.1M KOH for the oxygen evolution reaction,and can work continuously for more than 300 *** Ru mass activity is achieved,reaching 56.7 Ag^(-1)_(Ru) at an overpotential of 200 mV,which is 36 times higher than that of commercial RuO_(2).X-ray adsorption spectroscopy and density function theory calculations reveal that atomically dispersed ruthenium on metal sites in MOFs is expected to optimize the electronic structure of nickel sites,thus improving the conductivity of the catalyst and optimizing the adsorption energy of intermediates,resulting in significant optimization of electrocatalytic *** study could provide a new avenue for the design of efficient and stable MOF electrocatalysts.

关键词： electrocatalysis electronic structure metal-organic framework oxygen evolution reaction

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ChatGPT for Computational materials science:A Perspective

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Energy Material Advances 2023年第1期4卷 197-199页

作者： Zijian Hong School of Materials Science and Engineering Zhejiang UniversityHangzhouZhejiang 310027China Cyrus Tang Center for Sensor Materials and Applications State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhouZhejiang 310027China

ChatGPT has become a very popular artificial intelligence tool recently,with the ability to“chat”with human *** can perform some challenging tasks such as writing essays,coding,composing,painting,*** the roles of ChatGPT in helping with literature reviews and language editing have been widely debated,the potential applications of ChatGPT in computational materials science have yet to be ***,we will briefly discuss 3 aspects that ChatGPT could potentially be applied for computational materials science,i.e.,building structures,writing codes for specific scientific software,and preparing data visualization *** is found that while ChatGPT can make some simple mistakes when trying to accomplish general tasks,it has the ability to learn from our words when interacting with ***,we should also pay attention to some problems such as the consistency of the output,hidden errors,and ethical *** hope that this perspective will spur further interest in the potential applications of ChatGPT in computational materials science.

关键词： preparing writing helping

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Gate Tunable Labyrinth Domain Structures in a van der Waals Itinerant Ferromagnet Cr_(7)Te_(8)

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Chinese Physics Letters 2024年第9期41卷 122-132页

作者： Kui Meng Zeya Li Yicheng Shen Xiangyu Bi Junhao Rao Yuting Qian Zhansheng Gao Peng Chen Caiyu Qiu Feng Qin Jinxiong Wu Feng Luo Junwei Huang Hongtao Yuan National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210000China Center for the Physics of Low-Dimensional Materials Henan Joint International Research Laboratory of New Energy Materials and DevicesSchool of Physics and ElectronicsHenan UniversityKaifeng 475004China Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSmart Sensor Interdisciplinary Science CenterSchool of Materials Science and EngineeringNankai UniversityTianjin 300350China

Manipulating magnetic domain structure plays a key role in advanced spintronics *** rationale is that the labyrinthine domain structure,normally appearing in ferromagnetic thin films with strong magnetic anisotropy,shows a great potential to increase data storage density for designing magnetic nonvolatile memory and logic ***,an electrical control of labyrinthine domain structure remains ***,we demonstrate the gate-driven evolution of labyrinthine domain structures in an itinerant ferromagnet Cr_(7)Te_(8).By combining electric transport measurements and micromagnetic finite difference simulations,we find that the hysteresis loop of anomalous Hall effect in Cr_(7)Te_(8)samples shows distinct features corresponding to the generation of labyrinthine domain *** labyrinthine domain structures are found to be electrically tunable via Li-electrolyte gating,and such gate-driven evolution in Cr_(7)Te_(8)originates from the reduction of the magnetic anisotropic energy with gating,revealed by our micromagnetic *** results on the gate control of anomalous Hall effect in an itinerant magnetic material provide an opportunity to understand the formation and evolution of labyrinthine domain structures,paving a new route towards electric-field driven spintronics.

关键词： rational electrolyte ferromagnetic

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Dynamically responsive photonic metal–organic frameworks

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Advanced Photonics 2023年第5期5卷 7-25页

作者： He-Qi Zheng Lin Zhang Yuanjing Cui Guodong Qian Zhejiang University School of Materials Science and EngineeringCyrus Tang Center for Sensor Materials and ApplicationsState Key Laboratory of Silicon Materials and Advanced Semiconductor MaterialsHangzhouChina

Different from single and static photonic materials,dynamically responsive materials possess numerous advantages,such as being multifunctional,dynamically responsive,and able to provide multiple channels within spatially limited platforms,thus exhibiting great potential for application in the color-on-demand areas,including imaging,optical displays,anticounterfeiting,and *** functional metal–organic frameworks(MOFs),with highly designable framework structures and varieties of optical functional building units,possess broad research and application prospects in the field of photonics,which make it possible to design a promising platform with multifunctional and integrated photonic *** this review,beyond the preparation strategies of stimuli-responsive photonic MOFs,we also summarize the stimuli-responsive photonic MOFs regarding several most representative types of external stimuli(such as light,gas,pressure,and polarization).As shown,external stimulation endows the stimuli-responsive photonic MOFs with intriguing regulatable photonic properties:intensive and tunable emission,multiphoton-excitable luminescence,nonlinear optical,circularly polarized luminescence,lasing,***,their advanced representative applications,such as information encryption and anticounterfeiting display,biological imaging,chemosensing,and others,are also *** challenges are proposed and the prospects are addressed.

关键词： stimuli-responsive photonic properties switchable materials photochromic molecules metal-organic frameworks

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Recent progress in metal-organic frameworks(Part Ⅱ—material application)

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science China Chemistry 2025年第5期68卷 1642-1702页

作者： Jiandong Pang Wentao Jiang Xue-Wen Zhang Hao-Long Zhou Yuxiu Sun Wei Gong Bin Wang Fuyin Ma Linwei He Long Chen Qiang Chen He-Qi Zheng Yuanjing Cui Wen-Jie Shi Chao Zhang Mei Wang Yue-Biao Zhang Jie-Peng Zhang Chongli Zhong Yong Cui Shuao Wang Jian-Rong Li Guodong Qian Tong-Bu Lu Huan Pang Xian-He Bu School of Materials Science and Engineering Nankai University School of Physical Science and Technology Shanghai Tech University MOE Key Laboratory of Bioinorganic and Synthetic Chemistry GBRCE for Functional Molecular EngineeringSchool of ChemistryIGCMESun Yat-sen University Department of Chemistry Shantou University School of Chemical Engineering and Technology Tiangong University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary SciencesSoochow University College of Materials Science & Engineering Beijing University of Technology State Key Laboratory of Silicon and Advanced Semiconductor Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science & EngineeringZhejiang University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology School of Chemistry and Chemical Engineering Yangzhou University

As a class of functional crystalline porous materials, metal-organic frameworks(MOFs) gained rapid development in the past three decades and a large number of MOFs with ordered structures, high surface areas, and functionalized channels have been investigated. MOFs and MOF-derived/composite materials show great potential in many application fields. In this review, we discussed the main applications of MOFs and MOF-derived/composite materials in small molecule storage, separation, luminescence, sensing, multitype catalysis, and energy storage. In addition, challenges and problems in the future research of MOFs-related fields are also discussed.

关键词： metal-organic frameworks storage and separation sensing and detection multitype catalysis energy storage

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Parameter estimation in n-dimensional massless scalar field

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Chinese Physics B 2024年第3期33卷 231-237页

作者：杨颖荆继良 Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials School of Physics and ElectronicsHunan University of Science and TechnologyXiangtan 411201China Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081Chin

Quantum Fisher information(QFI)associated with local metrology has been used to parameter estimation in open quantum *** this work,we calculated the QFI for a moving Unruh-DeWitt detector coupled with massless scalar fields in n-dimensional spacetime,and analyzed the behavior of QFI with various parameters,such as the dimension of spacetime,evolution time,and Unruh *** discovered that the QFI of state parameter decreases monotonically from 1 to 0 over ***,we noted that the QFI for small evolution times is several orders of magnitude higher than the QFI for long evolution *** also found that the value of QFI decreases at first and then stabilizes as the Unruh temperature *** was observed that the QFI depends on initial state parameterθ,and Fθis the maximum forθ=0 orθ=π,Fφis the maximum forθ=π/*** also obtain that the maximum value of QFI for state parameters varies for different spacetime dimensions with the same evolution time.

关键词： quantum Fisher information parameter estimation open quantum systems

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Gate-tunable Berry curvature in van der Waals itinerant ferromagnetic Cr_(7)Te_(8)

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InfoMat 2024年第3期6卷 108-116页

作者： Kui Meng Zeya Li Zhansheng Gao Xiangyu Bi Peng Chen Feng Qin Caiyu Qiu Lingyun Xu Junwei Huang Jinxiong Wu Feng Luo Hongtao Yuan National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjingthe People's Republic of China Center for the Physics of Low-Dimensional Materials Henan Joint International Research Laboratory of New Energy Materials and DevicesSchool of Physics and ElectronicsHenan UniversityKaifengthe People's Republic of China Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsSmart Sensor Interdisciplinary Science CenterSchool of Materials Science and EngineeringNankai UniversityTianjinthe People's Republic of China

The anomalous Hall effect(AHE)that associated with the Berry curvature of occupied electronic states in momentum-space is one of the intriguing aspects in condensed matter physics,and provides an alternative for potential applications in topological *** experiments reported the tunable Berry curvature and the resulting magnetization switching process in the AHE based on strain engineering or chemical ***,the AHE modulation by these strategies are usually irreversible,making it difficult to realize switchable control of the AHE and the resultant spintronic ***,we demonstrated the switchable control of the Berry-curvature-related AHE by electrical gating in itinerant ferromagnetic Cr_(7)Te_(8)with excellent ambient *** gate-tunable sign reversal of the AHE can be attributed to the redistribution of the Berry curvature in the band structure of Cr_(7)Te_(8)due to the intercalation-induced change in the Fermi *** work facilitates the applications of magnetic switchable devices based on gate-tunable Berry curvature.

关键词： anomalous Hall effect Berry curvature van der Waals itinerant ferromagnetism

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Nonlinear optical metal-organic frameworks for ratiometric temperature sensing in physiological range

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Chinese Chemical Letters 2021年第4期32卷 1511-1514页

作者： Yating Wan Yuanjing Cui Yu Yang Guodong Qian State Key Laboratory of Silicon Materials Cyrus Tang Center for Sensor Materials and ApplicationsSchool of Materials Science and EngineeringZhejiang University.Hangzhou 310027China

The precise and real-time sensing of the temperature within the physiological range is of great significance in biology and ***,a Zn-based metal-organic framework(MOF)named ZnTCOMA is synthesized with good SHG performance due to its unique structure of the ligand and 3 D *** encapsulating the two-photon fluorescent dye DMASE into the pores of Zn-TCOMA,the composite Zn-TCOMA■DMASE is obtained and simultaneously exhibits SHG response and two-photon fluo *** the intensity ratio between two-photon fluorescence of DMASE and SHG signal of Zn-TCOMA,Zn-TCOMA■DMASE exhibits ratiometric temperature sensing property at physiological temperature region of 20~60℃with high *** MOF thermometer also shows excellent repeatability,good biocompatibility,and high temperature resolution of 0.018℃,opening a new avenue to develop diverse optical thermometric or thermographic applications in biotechnology or other areas.

关键词： Ratiometric thermometer Nonlinear optic Metal-organic framework Physiological temperature Two-photon excited fluorescence

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Significant Research and Technology Landscape on Electrostatically Charged Sprays for Agro-Food and Health Industry

Significant Research and Technology Landscape on Electrostat...

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International Conference on Electrostatics 2023

作者： Kumar Patel, Mamoj Rani, Raj Sohel, Aamir Chauhan, Aarti Manfacturing Science and Instrumentation CSIR-Central Scientific Instruments Organisation Chandigarh160 030 India Materials Science and Sensor Applications CSIR-Central Scientific Instrument Organisation Chandigarh160 030 India Academy of Scientific and Innovative Research Uttar Pradesh Ghaziabad201 002 India

The trans-disciplinary aspects of the embryonic field of electrostatic spraying have provided a major motivation to researchers for the development of novel techniques for spraying of protective coatings to perishable food commodities for enhanced shelf-life, protective agents for health and hygiene in addition to other applications of sprays to manufacturing, transportation, agriculture, environment, medical facilities and devices. It has become the motives behind the renewed curiosity in the usage of the electrostatics in liquid based sprays. This provides an efficient and uniform transportation of liquid based agents which avoids the wastage of natural resource with enhanced performance. Edible coatings and incorporation of nutrition and active ingredients may improve fruit quality providing foodstuffs supplemented with extra flavour and a delicious, tantalizing and mouth-watering appearance. Electrostatic spray technology for coating of antioxidants and edible films for food products and fruits preservation is a sustainable development strategy in this revolutionary technology era that has gained a lot of attention owing to its importance in enhancing the shelf life of foods keeping its nutritional and sensory properties. Electrostatic disinfection and sanitization has gained a lot of attention and people became more alert about health and hygiene during the COVID-19 pandemic. Although few research initiatives have been taken over the past years, the work largely remains in the nascent stage as far as field-scale technology development and commercialization is concerned. These technological and life sustaining technologies will overall lead to improvement in the quality of life. A significant value of the charge-to-mass ratio (Q/M) of 4.83 mC/kg was achieved at applied air pressure of 4 bar and liquid flow rate of 130 ml/min at a target distance of 10 cm from the nozzle tip. © Published under licence by IOP Publishing Ltd.

关键词： Electrostatics

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