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Fully Conjugated Covalent Organic Frameworks:Synthesis,Structures and Applications

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Chinese Journal of Chemistry 2023年第23期41卷 3447-3472页

作者： Yueshuai Xu Guanshi Ren Dianqi Zhang Lishui Sun yingjie zhao College of Polymer Science and Engineering Qingdao University of Science and TechnologyQingdaoShandong266000 China

This review presents a comprehensive examination of fully conjugated covalent organic frameworks(COFs),which constitute an emerging class of porous materials with immense potential for diverse *** article focuses on diversified fully conjugated COFs,including sp2 carbon-carbon linkages,pyrazine linkages,benzobisoxazole linkages,dioxin linkages,β-aminoalkenone linkages,*** synthesis techniques and structural attributes of these COFs are expounded upon in great detail,along with their potential applications in various *** review thus provides a valuable resource for researchers keen on delving into the synthesis and applications of fully conjugated COFs,thereby highlighting their potential for developing novel functional materials with distinctive properties.

关键词： Covalent organic frameworks Fully-conjugated system Crystallinity Stability Conjugation Porous polymers Conjugated polymers

百合bHLH家族系统进化和花香相关基因克隆及表达分析

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植物遗传资源学报 2024年第5期25卷 813-823页

作者：武琼刘佳鑫赵瑛杰梁蕤韩美玲李超杜方山西农业大学园艺学院太谷030801 山西农业大学城乡建设学院太谷030801 南京农业大学园艺学院南京210095 山西禾田悦农业技术服务有限公司吕梁033299

bHLH转录因子家族是植物中最大的转录因子家族之一。当前越来越多的植物bHLH转录因子家族被鉴定,然而百合bHLH转录因子家族的系统分析尚未见报道。本研究基于百合转录组数据,共鉴定出74个bHLH家族蛋白,均为亲水性蛋白,93%为不稳定蛋白,... 详细信息

bHLH转录因子家族是植物中最大的转录因子家族之一。当前越来越多的植物bHLH转录因子家族被鉴定,然而百合bHLH转录因子家族的系统分析尚未见报道。本研究基于百合转录组数据,共鉴定出74个bHLH家族蛋白,均为亲水性蛋白,93%为不稳定蛋白,61%为酸性蛋白。结构域分析发现有25个保守残基的一致性≥50%,其中R16、R17、L27、L49和L59位点高度保守。此外,64个b HLH蛋白能与DNA结合,包含58个E-box结合物和46个G-box结合物。系统进化分析将百合bHLHs分为21个亚家族,基于进化树发现百合bHLHs可能执行信号转导、非生物胁迫、植物生长发育和物质合成等功能。对3个可能与罗勒烯和芳樟醇相关的基因Unigene23213_All、***2_All和***2_All进行了克隆,发现它们在品种间存在97.30%~99.89%的同源性。表达模式分析结果显示,三者在花、叶和鳞中均有表达。该研究为开展百合bHLH转录因子的功能研究提供了重要的序列信息。

关键词：百合 bHLH家族鉴定基因克隆半定量RT-PCR

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One-Pot Synthesis of Fully-Conjugated Chemically Stable Two-Dimensional Covalent Organic Framework

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Chinese Journal of Chemistry 2022年第6期40卷 699-704页

作者： Hui Liu Yuxi Han Xuhan Zheng Jinyu zhao Yixiao Man Lishui Sun yingjie zhao Engineering Research Center of High Performance Polymer and Molding Technology Ministry of EducationCollege of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdaoShandong 266000China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China

Covalent organic frameworks(COFs)with good chemical stability coupled with extended-conjugation structures are highly ***,a fully-conjugated and chemically stable two-dimensional COF was synthesized by a one-pot,three-components synthe-sis through a successful conversion of amine,aldehyde,and alkyne groups into the quinoline units as linkages with B(C6F5)3 serving as a Lewis acid catalyst,whilst 2,3-dichloro-5,6-dicyano-1,4-benzoquinone(DDQ)was employed as an *** obtained fully conjugated 2D COF shows excellent stability in acid or base.

关键词： Covalent organic frameworks Fully-conjugated system Two-dimensional materials One-pot synthesis Chemical stability

Possible link between new coronavirus variants and atmospheric lightning and seawater intrusion

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Atmospheric and Oceanic Science Letters 2022年第1期15卷 81-83页

作者： Jianping Huang yingjie zhao Danfeng Wang Collaborative Innovation Centre for West Ecological Safety(CIWES) Lanzhou UniversityLanzhouChina

自新型冠状病毒肺炎暴发一年多以来,已经对全球产生深远影响.新型冠状病毒肺炎变异毒株的出现使当前疫情发展充满了不确定性.从这方面出发,我们讨论病毒变异与大气因素之间的联系.根据固氮过程和硝酸盐在人体中的转化过程,我们提出了新... 详细信息

自新型冠状病毒肺炎暴发一年多以来,已经对全球产生深远影响.新型冠状病毒肺炎变异毒株的出现使当前疫情发展充满了不确定性.从这方面出发,我们讨论病毒变异与大气因素之间的联系.根据固氮过程和硝酸盐在人体中的转化过程,我们提出了新型冠状病毒肺炎变异毒株的出现或许和闪电以及海水入侵有联系.我们的研究对新型冠状病毒肺炎变异毒株可能的产生原因提供新的观点.

关键词：新型冠状病毒肺炎变异毒株闪电海水亚硝酸盐硝酸盐一氧化氮

Multifunctional Perovskite Photodetectors: From Molecular-Scale Crystal Structure Design to Micro/Nano-scale Morphology Manipulation

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Nano-Micro Letters 2023年第10期15卷 565-594页

作者： yingjie zhao Xing Yin Pengwei Li Ziqiu Ren Zhenkun Gu Yiqiang Zhang Yanlin Song College of Chemistry Zhengzhou UniversityZhengzhou 450001People’s Republic of China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450001People’s Republic of China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of Sciences(ICCAS)Beijing 100190People’s Republic of China

Multifunctional photodetectors boost the development of traditional optical communication technology and emerging artificial intelligence fields, such as robotics and autonomous driving. However, the current implementation of multifunctional detectors is based on the physical combination of optical lenses, gratings, and multiple photodetectors, the large size and its complex structure hinder the miniaturization, lightweight, and integration of devices. In contrast, perovskite materials have achieved remarkable progress in the field of multifunctional photodetectors due to their diverse crystal structures, simple morphology manipulation, and excellent optoelectronic properties. In this review, we first overview the crystal structures and morphology manipulation techniques of perovskite materials and then summarize the working mechanism and performance parameters of multifunctional photodetectors. Furthermore, the fabrication strategies of multifunctional perovskite photodetectors and their advancements are highlighted, including polarized light detection, spectral detection, angle-sensing detection, and selfpowered detection. Finally, the existing problems of multifunctional detectors and the perspectives of their future development are presented.

关键词： Perovskite materials Crystal structure design Micro/nano-structure manipulation Working mechanism Multifunctional photodetectors

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智能采煤机器人关键技术

煤炭学报 2024年第2期49卷 1174-1182页

作者：马宏伟赵英杰薛旭升吴海雁毛清华杨会武张旭辉车万里曹现刚赵友军王川伟赵亦辉王鹏孙思雅马柯翔李烺西安科技大学机械工程学院陕西西安710054 陕西省矿山机电装备智能检测与控制重点实验室陕西西安710054 西安重工装备制造集团有限公司陕西西安710054 西安煤矿机械有限公司陕西西安710200

采煤机是综采工作面的核心装备,研发智能采煤机器人是实现综采工作面智能化的关键。综合分析当前采煤机机器人化研究进程中的传感检测、位姿控制、速度控制、截割轨迹规划与跟踪控制等技术的研究现状,提出研发智能采煤机器人必须破解的... 详细信息

采煤机是综采工作面的核心装备,研发智能采煤机器人是实现综采工作面智能化的关键。综合分析当前采煤机机器人化研究进程中的传感检测、位姿控制、速度控制、截割轨迹规划与跟踪控制等技术的研究现状,提出研发智能采煤机器人必须破解的“智能感知、位姿控制、速度控制、截割轨迹规划与跟踪控制、位-姿-速协同控制”五大关键技术,并给出解决方案。针对智能感知问题,提出了构建智能感知系统思路,给出了智能采煤机器人智能感知系统的架构,实现对运行状态、位姿、环境等全面感知,为智能采煤机器人安全、可靠运行提供保障;针对位姿控制问题,提出了智能PID位姿控制思路,给出了改进遗传算法的PID位姿控制方法,实现了智能采煤机器人位姿精准控制;针对速度控制问题,提出了融合“力-电”异构数据的截割载荷测量思路,给出了基于神经网络算法的截割载荷测量方法,实现了截割载荷的精准测量;提出牵引与截割速度自适应控制思路,给出了人工智能算法牵引与截割速度决策方法和滑模自抗扰控制的牵引与截割速度控制方法,实现了智能采煤机器人速度精准自适应控制;针对截割轨迹规划与跟踪控制问题,提出了截割轨迹精准规划思路,给出了融合地质数据和历史截割数据的截割轨迹规划模型,实现了截割轨迹的精准规划;提出了截割轨迹精准跟踪控制思路,给出了智能插补算法的截割轨迹跟踪控制方法,实现了智能采煤机器人截割轨迹高精度规划与精准跟踪控制;针对“位-姿-速”协同控制问题,提出了“位-姿-速”协同控制参数智能优化思路,给出了基于多系统互约束的改进粒子群“位-姿-速”协同控制参数优化方法,实现了智能采煤机器人智能高效作业。深入研究五大关键技术破解思路,有利于加快推动研发高性能、高效率、高可靠的智能采煤机器人。

关键词：智能采煤机器人智能感知速度控制截割轨迹规划与跟踪控制协同控制

Chlorine-substituted chiral 2D perovskite microwires with enhanced lattice rigidity for sensitive circularly polarized light detection

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Science China Chemistry 2023年第12期66卷 3602-3610页

作者： Meng Yuan Yuchen Qiu yingjie zhao Yuyan zhao Hui Li Xiao Wei Gaosong Chen Jiangang Feng Hanfei Gao Jinjin zhao Jiahui zhao Lei Jiang Yuchen Wu Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China College of Chemistry Zhengzhou UniversityZhengzhou 450001China College of Chemistry Jilin UniversityChangchun 130012China Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologyCollaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China University of Chinese Academy of Sciences(UCAS) Beijing 100049China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117585Singapore Suzhou Institute for Advanced Research University of Science and Technology of ChinaSuzhou 215123China Ji Hua Laboratory Foshan 528000China Department of Physics Shanxi Datong UniversityDatong 037009China

Chiral two-dimensional(2D) perovskites offer numerous attractive features for optoelectronics owing to their soft, deformable lattices and a high degree of chemical tunability. While tremendous advances have been made in perovskite-based direct circularly polarized light(CPL) detection, the low circular polarization anisotropy factor and sensitivity of those photodetectors arising from large lattice distortion still limit practical applications. Herein, chiral 2D perovskite-based single-crystalline microwire arrays with enhanced circular dichroism(CD) absorption are fabricated with the synergy of the capillary-bridgeconfined assembly method and chlorine-substituted phenethylamine(Cl-MBA). Compared with phenethylamine(MBA)-inserted perovskites, the smaller lattice distortion and increased halogen–halogen interaction within Cl–MBA-inserted perovskites strengthen lattice rigidity and weaken electron–phonon coupling to improve carrier transport and thermal stability, resulting in high-performance CPL photodetectors with an anisotropy factor of 0.25, responsivity exceeding 95.7±9.3 A W^(-1)and detectivity exceeding(3.05±0.30)×10^(13)Jones. This work opens a new perspective to modulate circular polarization sensitivity and will be helpful to realize promising implementations in quantum computation and communication.

关键词： chiral perovskites microwire arrays lattice rigidity circular polarization photodetectors

Triphenylamine-based highly active two-photon absorbing chromophores with push-pull systems

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Chinese Chemical Letters 2023年第7期34卷 444-448页

作者： Yanqi Ban Linhong Hao Zhenbo Peng Lishui Sun Lihua Teng yingjie zhao College of Polymer Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China College of Mathematics and Physics Qingdao University of Science and TechnologyQingdao 266061China

Two triphenylamine-based star-type push-pull chromophores(T1, T2) were designed and *** serves as the central core and acts as an electron-donating group surrounded by electronwithdrawing pentafluorobenzene or N,N-dimethyl substituted tetrafluorobenzene, which are connected by ethylene bridges. Single-crystal X-ray diffraction confirmed the structures and molecular arrangement of two chromophores. The systematic photophysical research of T1 and T2 absorption characteristics was carried out to gain a better understanding of how structure-property relationships affect the observed nonlinear optical absorption phenomenon. Complementary calculations based on density functional theory(DFT) further confirmed the experimental results. Both chromophores exhibited excellent two-photon absorption(TPA) properties in CH_(2)Cl_(2). Notably, T2 has more remarkable nonlinear optical absorption effects with the TPA cross-section up to 4.24 × 10~7GM. By adjusting the electronic structures of the chromophores through introducing pentafluorobenzene or N,N-dimethyl as functional groups with different electron-donating or withdrawing behaviors, the TPA performance of the small organic molecule could be greatly enhanced. These molecular structures with push-pull systems were excellent candidates for different two-photon applications.

关键词： Star-type chromophores Triphenylamine derivatives Two-photon absorption Nonlinear optical materials Push-pull systems

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外水压力作用下伸缩缝防渗体系数值模拟研究

科技资讯 2024年第2期22卷 135-138,243页

作者：张宇弛王雪张晨辰赵颖杰浙江同济科技职业学院浙江杭州311231

基于内聚力模型,建立了复合型防渗体系的有限元计算模型,探讨了在外水压力作用下防渗体系的剥离破坏过程。研究表明,表面涂层厚度、嵌缝深度与防渗体系抵抗变形能力成正比;随着嵌缝深度的增加,防渗体系抵抗水压变形能力的增强幅度越小,... 详细信息

基于内聚力模型,建立了复合型防渗体系的有限元计算模型,探讨了在外水压力作用下防渗体系的剥离破坏过程。研究表明,表面涂层厚度、嵌缝深度与防渗体系抵抗变形能力成正比;随着嵌缝深度的增加,防渗体系抵抗水压变形能力的增强幅度越小,涂层厚度对抵抗水压变形能力的增强幅度影响更小;防渗体系的破坏起始点有两处,当嵌缝材料厚度较小时,破坏起始点在聚脲表面涂层与混凝土的接合处;当嵌缝材料厚度较大时,破坏起始点在嵌缝材料与混凝土黏接层下部。通过定量分析,为抵抗1 MPa的水压,推荐内嵌材料深度至少1.5 cm、表面封闭层厚度至少2 mm。

关键词：输水隧洞内聚力聚脲防渗

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