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CPL-active hybrid copper(Ⅰ)halides enabled by cation inclusion with chiral crown-ether

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Science China Chemistry 2024年第10期67卷 3283-3290页

作者： Peng Fan Li-Xuan Cai Xiao-Fang duan Fan Yin Chen-Chen Li zhong-Hua Deng Xiao-zhen Li Qing-Fu Sun College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350117China Strait Institute of Flexible Electronics(Future Technologies) Fujian Key Laboratory of Flexible ElectronicsFujian Normal University and Strait Laboratory of Flexible ElectronicsFuzhou 350117China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian College University of Chinese Academy of SciencesFuzhou 350002China

Chiral hybrid metal halides with high photoluminescence quantum yield(PLQY)and superior dissymmetry factor(g_(lum))are promising candidates for circularly polarized luminescence(CPL)emitting ***,it is a great challenge to achieve both high g_(lum)and large ***,we report a new supramolecular strategy to fabricate chiral hybrid Cu(Ⅰ)-halides with nearunity quantum yields and intense CPL *** dissymmetry factor can be dramatically modulated by tuning the hostguest *** to the chirality and variable conformations of the host-guest complexes,a series of chiral[G@L^(R/S)]_(2)Cu_(4)I_(6)have been *** incorporation of different cations within the chiral L^(R/S)hosts leads to variations of packing modes along the c-axis and different extent of distortions in the[Cu_(4)I_(6)]_(2)-*** them,[H_(3)O@L^(R/S)]+cations are stacked based on Van der Waals interactions and hierarchically self-assemble into a right/left-handed helix in[H_(3)O@L^(R/S)]_(2)Cu_(4)I_(6),which results in a high g_(lum)of-7×10^(-3)and a large PLQY of 96.92%.Notably,[G@L^(R/S)]_(2)Cu_(4)I_(6)shows promising applications in single-component white light emitting diodes(WLEDs),exhibiting a maximum dissymmetry factor of-1.2×10^(-3).The effective host-guest complexation and oriented hierarchical self-assembly provide an effective strategy for the development of high-performance CPL materials.

关键词： host-guest interaction circularly polarized luminescence copper iodide cluster hierarchical self-assembly chirality

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一体化摩擦电自供能气湿传感器研究进展

电子学报 2024年第2期52卷 660-677页

作者：刘勃豪谢光忠段再华袁震蒋亚东太惠玲电子科技大学光电科学与工程学院电子薄膜与集成器件国家重点实验室四川成都611731

气湿传感器在环境检测、工农业生产以及医疗健康等领域应用甚广,然而主流的电阻、电容、光电气湿传感器需要外部供能工作,一方面电池的频繁更换与维护增加了泄露引起的环境污染,另一方面传感器对外界能源过于依赖将限制其在缺乏能源的... 详细信息

气湿传感器在环境检测、工农业生产以及医疗健康等领域应用甚广,然而主流的电阻、电容、光电气湿传感器需要外部供能工作,一方面电池的频繁更换与维护增加了泄露引起的环境污染,另一方面传感器对外界能源过于依赖将限制其在缺乏能源的场合中正常工作.鉴于此,通过赋予气湿传感器自发收集外界环境能量并转化成电能的能力,以实现长期自主工作的自供能气湿传感器的理念应运而生.摩擦纳米发电机(TriboElectric NanoGenerator,TENG)作为一种新型能量俘获装置,由于其成本低、可结构设计且能量转换效率高等优势,在机械能收集与自供能传感器等领域应用广泛.进一步赋予TENG外界信息感知的能力,可实现单一器件兼具能量收集与气体敏感的功能,这种一体化摩擦电自供能传感器是目前传感器领域发展的一个热点方向.本文对一体化摩擦电自供能气湿传感器的研究现状与最新进展进行了综述,可从以下三个方面进行概括.(1)一体化摩擦电气湿传感器工作原理与气敏机理,并基于TENG的等效电路模型论述了影响敏感性能的参数—介电层摩擦电荷密度、介电层介电常数与电极层电导率;(2)一体化摩擦电气体传感器的研究进展,根据检测对象将其主要分为氨气(Ammonia,NH3)、乙醇以及其他有机挥发化合物(Volatile Organic Compound,VOC)气体传感器,介绍了其在呼出气、食品变质以及尾气排放检测场合的应用;(3)一体化摩擦电湿度传感器的研究进展,根据湿度对输出电信号幅值影响的不同将其主要分为电信号下降型传感器与电信号上升型传感器,介绍了其在非接触开关、皮肤湿度与尿不湿检测场合的应用.最后对一体化摩擦电气湿传感器的研究现状与面临的问题挑战进行了总结,并对其未来的发展方向进行了展望,可为相关研究提供参考.

关键词：摩擦纳米发电机一体化自供能敏感机理气体传感器湿度传感器

A chitosan/amido-graphene oxide-based self-powered humidity sensor enabled by triboelectric effect

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Rare Metals 2021年第8期40卷 1995-2003页

作者： Bo-Hao Liu Guang-zhong Xie Cheng-zhen Li Si Wang zhen Yuan Zai-Hua duan Ya-Dong Jiang Hui-Ling Tai State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu610054China

In this work,amido-graphene oxide(GO-NH_(2))loaded chitosan(CTS)composite material(CTS/GO-NH_(2))that acts as both the triboelectric and sensing film was prepared on rotary fan-shaped triboelectric nanogenerator for humidity *** with the pristine CTSbased triboelectric humidity sensor(CTS-THS)and GONH_(2)-THS,the CTS/GO-NH_(2)-based humidity sensor exhibited higher humidity response and better linearity in the relative humidity(RH)range of 18.7%RH-91.5%*** above results can be explained by the massive exposed and less concealed hydrophilic functional groups of CTS with the help of the wrinkle structure of GO-NH_(2).Meanwhile,the CTS/GO-NH_(2)-THS possessed good repeatability and acceptable hysteresis(~6.2%RH).Finally,a humidity sensing mechanism coupling triboelectric contact charging effect with electrons transfer principle under moisture environment was established to interpret the enhanced humidity sensing performance of the composite film-based *** work demonstrates that CTS/GONH_(2) composite film can be utilized to fabricate humidity sensors based on the triboelectric effect.

关键词： Chitosan Amido-graphene oxide Triboelectric nanogenerator Humidity sensors Hydrogen bonding interaction

Reply to Shanmugam,G.“Review of research in internal-wave and internal-tide deposits of China:Discussion”

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Journal of Palaeogeography 2014年第4期3卷 351-358页

作者： zhen-zhong Gao You-Bin He Xiang-Dong Li Tai-zhong duan School of Geosciences Yangtze University School of Land Resource Engineering Kunming University of Science and Technology Petroleum Production and Research Institute of SINOPEC

We are glad to know that our paper ＂Review of research in internal-wave and internal-tide deposits of China＂（Gao et al., 2013） published in Journal of Palaeogeography has attracted close attention of international peers, and we noted that Shanmugam has provided a critical assessment of our paper. He claimed that ＂interpretations of ten ancient exam- ples in China and one in the central Appalachians （USA） as deep-water deposits of internal waves and internal tides are unsustainable＂, among many other comments and criticisms, and he concluded that ＂any interpretation of ancient strata as deposits of internal waves and internal tides is premature＂. This article is aimed at responding to his major criticisms. We believe that constructive discussions will benefit the development of the study in internal-wave and internal-tide deposits. Unfortunately, Shanmugam seems not to follow this line of scientific criticism, but is trying to reject all research results in this subject based on his illogical and inconsistent reasoning, and distortion of others＇ points of view. In this article, with facts and evidences, we will refuse the main wrong assertions of Shanmugam＇s, for example, ＂the use of bidirectional cross-bedding as evidence for deposition by baroclinic currents in outcrop studies is sedimentologically erroneous ＂ and ＂any interpretation of ancient strata as deposits of internal waves and internal tides is premature＂. We will also use typical characteristics of the ancient examples to demonstrate that they are certainly not turbidites, or contourites, or tsunami-related deposits, but internal-wave and internal-tide deposits as the most plausible to defend the rationality of our interpretation in our previous papers.

关键词： internal-wave and internal-tide deposits bidirectional cross-bedding sedi- mentary succession critical assessment

Temperature Effects on Properties of Bi(2223) High Temperature Superconducting Tapes

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Chinese Physics Letters 2001年第5期18卷 677-679页

作者： WANG zheng-Dao CHEN Zhao-Jia duan zhen-zhong WANG Wen-Quan Cryogenic Laboratory Chinese Academy of SciencesBeijing 100080 Institute of Physics Chinese Academy of SciencesBeijing 100080 Northwest Institute for Non-Ferrous Metal Research Xi’an 710016 Beijing General Research Institute for Non-Ferrous Metals Beijing 100080

The critical current density Jc and n-value have been studied from 40 K to critical temperature for four types of Bi-system 2223 tapes with different *** experimental results demonstrate that the change of Jc can be divided into three parts and n-value has some decrease with a decrease in *** engineering application,a proper working temperature can be selected to satisfy the practical ***,the temperature effects on critical stress for Ag-sheath tape was also *** results demonstrate that the critical stress does not change monotonously with a decrease in *** increases first,then decreases with the further decrease in temperature.

关键词： temperature. stress critical

Arabidopsis LOS5 Gene Enhances Chilling and Salt Stress Tolerance in Cucumber

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Journal of Integrative Agriculture 2013年第5期12卷 825-834页

作者： LIU Li-ying duan Liu-sheng ZHANG Jia-chang MI Guo-quan ZHANG Xiao-lan ZHANG zhen-xian REN Hua-zhong College of Agronomy and Bio-Technology China Agricultural University Horticulture Institute Henan Academy of Agricultural Sciences

Low temperature and high salinity are the major abiotic stresses that restrict cucumber growth and production, breeding materials with multiple abiotic resistance are in greatly need. Here we investigated the effect of introducing the LOS5 gene, a key regulator of ABA biosynthesis in Arabidopsis thaliana, under the stress-responsive RD29A promoter into cucumber （Cucumis sativus L. cv. S516）. We found that T1 RD29A-LOS5 transgenic lines have enhanced tolerance to cold and salt stresses. Specifically, transgenic lines exhibited dwarf phenotypes with reduced leaf number, shorter internode, decreased length of the biggest leaf, fewer female flowers, shorter fruit neck and lower vitamin C （Vc）. The increased cold tolerance can be reflected from the significantly decreased cold index, the reduced electrolyte leakage index and the MDA content upon cold treatment as compared to those in the control. This may result from the accumulation of internal ABA, soluble sugars and proline, and the enhanced activities of protective enzymes superoxide dismutase （SOD）, peroxidase （POD） and catalase （CAT） in the transgenic lines. Under salt treatment, the transgenic lines exhibited increased germination index, vigor index, more lateral roots and increased root fresh weight. Moreover, RD29A-LOS5 transgenic plants displayed quicker responses in salt stress than that in low-temperature stress.

关键词： ABA low-temperature stress LOS5 transgenic plant cucumber salt stress

基本飞行中战斗机飞行员对座舱智能化的使用需求

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空军航空医学 2024年第3期41卷 225-230页

作者：刘娟田甄白霜钟阿婷段宇郭华林榕杜健郭小朝空军军医大学空军特色医学中心研究部航空心理研究室北京100142 空军军医大学空军特色医学中心研究部航空医学工程研究中心北京100142 空军军医大学空军特色医学中心研究部航空卫生保障与飞行安全研究室北京100142 空军军医大学空军特色医学中心研究部航空人因工程研究室北京100142

目的通过调查战斗机飞行员的操作要求、认知特点和使用习惯等,提出基本飞行阶段飞行员对座舱智能化使用需求的具体条目及优先级,提高飞机智能化水平。方法编制《基本飞行阶段飞机座舱智能化使用需求调查表》,随机抽取296名男性飞行员进... 详细信息

目的通过调查战斗机飞行员的操作要求、认知特点和使用习惯等,提出基本飞行阶段飞行员对座舱智能化使用需求的具体条目及优先级,提高飞机智能化水平。方法编制《基本飞行阶段飞机座舱智能化使用需求调查表》,随机抽取296名男性飞行员进行调查,要求其回忆各项任务中需要人工观察、判断和计算的信息,在对信息进行分析汇总的基础上提出新型战斗机座舱智能化人机工效设计相关的意见/建议。结果共收集到各类意见/建议3182条,其中座舱智能化意见/建议共计2997条,占比94.19%;从2997条智能化意见/建议中提炼出智能化使用需求条目共计52个,其中受飞行员重点关注的条目共计34个;自动驾驶、智能语音(含告警)、智能避撞和语音操控等4个条目,在起飞前准备、滑出/起飞、进场/着陆、导航和巡航5个任务阶段均被飞行员重点关注,说明飞行员迫切需要将这4个条目的功能实现智能化。结论调查结果可为优化战斗机座舱控制界面的人-机适配性设计、科学合理地增强未来新型战斗机座舱的智能化水平及降低飞行员的工作负荷提供重要参考。

关键词：基本飞行座舱设计人工智能使用需求人机工效飞行员

Identification of proteins associated with Fusarium crown rot resistance in wheat using label-free quantification analysis

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Journal of Integrative Agriculture 2021年第12期20卷 3209-3221页

作者： JIN Jing-jing duan Shuo-nan Ql Yong-zhi zhen Wen-chao MA Jun College of Plant Protection Hebei Agricultural UniversityBaoding 071001P.R.China State Key Laboratory of North China Crop Improvement and Regulation Baoding 071001P.R.China College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193P.R.China College of Agronomy Hebei Agricultural UniversityBaoding 071001P.R.China

Fusarium crown rot(FCR),typically caused by Fusarium pseudograminearum,is a severe soil-borne disease that,in recent years,has become an emerging threat to Chinese wheat *** the first time in this study,we investigated and compared the proteomic characteristics of two Chinese wheat varieties(04 zhong 36 and Xinmai 26)at 24,48,and 72 h post-inoculation using label-free quantitative proteomic analysis.A total of 9234 proteins were successfully quantified,of which 783 were differentially expressed after *** proteins were mainly involved in metabolic,single-organism,and cellular ***-three proteins associated with defense,cell wall formation,photosynthesis,etc.,showed consistently different expression between the two genotypes at multiple time *** particular,chitinase,which degrades chitin in the fungal cell wall and limits fungal growth,was exclusively and consistently upregulated in 04 zhong 36 across the three time *** proteins such as flavonoid O-methyltransferase,glycosyltransferase,and peroxidase were only upregulated in 04 zhong 36,and proteins,including the berberine bridge enzyme and rubisco large subunit-binding protein,were specifically downregulated in Xinmai *** expression of transcripts encoding eight selected proteins through qRT-PCR analysis supported the proteomic ***,the results of this study allow us to understand FCR resistance in wheat at the protein *** proteins and their corresponding genes may be useful resources for the genetic improvement of FCR resistance in wheat.

关键词： wheat Fusarium crown rot proteomic differential expression multiple time points

Deployment and application of ERP service on grid

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通讯和计算机（中英文版） 2008年第5期5卷 52-55,65页

作者： GAO zhong-wen duan Rui-zhen JIANG Dong College of Automation Harbin University of Science and Technology Harbin 150080 China