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Chinese Journal of Chemistry 2018年第12期36卷 1130-1134页

作者： Zheng GU BO Wu guo-fang jiang Yong-Gui Zhou State Key Laboratory of Catalysis Dalian institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning 116023China College of Chemistry and Chemical Engineering Hunan UniversityChangshaHunan 410082China

An efficient bifunctional squaramide‐catalyzed Michael addition/cyclization of azadienes with malononitrile has been successfully developed, providing a facile access to chiral benzofuran‐fused 1,4‐dihydropyridines with excellent yields, wide substrate scope and up to 99% ee. Additionally, this formal [4+2] cycloaddition can be performed in gram scale without noticeable loss of yield and enantioselectivity.

关键词： 1,4‐dihydropyridines cycloaddition azadienes tandem reactions organocatalysis asymmetric synthesis

One-dimensional phenanthroline-based covalent organic framework bearing single cobalt atoms for efﬁcient photocatalytic CO_(2) reduction

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Aggregate 2024年第5期5卷 331-339页

作者： Lv-Ye Ai Qian Wang Xiao-Wen Chen guo-fang jiang State Key Lab of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangshaHunanChina School of Materials and Environmental Engineering Shenzhen PolytechnicShenzhenGuangdongChina

Metalated covalent organic frameworks(COFs)for 2D and 3D topologies are continuously being developed,whereas metalated COFs with 1D topologies are still in their ***,a novel 1D phenanthroline-based COF containing 4,4-(1,10-phenanthroline-2,9-diyl)bis[benzaldehyde](PBA)is reported(PAD-COF).Subsequently,a metalated 1D COF,Co SAS/PAD-COF,is constructed using the bidentate ligand properties of PBA and anchoring the single Co atoms in PAD-COF through a post-synthetic modiﬁcation *** complex signiﬁcantly improved the photocatalytic performance of PAD-COF,and the CO yield of the optimized Co SAS/PAD-COF was stable at 3091µmol g^(-1) h^(-1) with a selectivity of 93%,which is approximately 43.7 times that of the original *** and theoretical results demonstrate the excellent CO_(2) photoreduction activity of Co SAS/PAD-COF owing to the synergistic effect of single Co catalytic sites and *** them,PAD-COF,as the host,adsorbs CO_(2) molecules and loads single Co ***,Co atoms function as catalytic sites and promote the adsorp-tion and activation of CO_(2),while reducing the reaction energy barrier formed by the*COOH ***,this unique metalated 1D COF provides a fresh approach to photocatalytic CO_(2) reduction.

关键词： 1D phenanthroline-based covalent organic framework metalated photocatalytic CO_(2)reduction single Co atoms

Effects of connecting sequences of building blocks on reticular synthesis of covalent organic frameworks

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Nano Research 2021年第2期14卷 381-386页

作者： De-Li Ma Cheng Qian Qiao-Yan Qi Zhong-Ri Zhong guo-fang jiang Xin Zhao State Key Lab of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan Universityf Changsha 410082China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling RoadShanghai 200032China

The principle of reticular chemistry has been widely used to guide the design of crystalline porous materials such as metal organic frameworks(MOFs)and covalent organic frameworks(COFs).While in the early strategies only the symmetries of the building blocks were considered for reticular synthesis of COFs,recently a few researches on COFs with hierarchical porosities indicate that connecting sequence of building blocks also plays a crucial role in determining crystalline structures of ***,this important phenomenon has not been systematically investigated *** this article,a model system has been established to demonstrate how different connecting sequences of two C_(2v)-symmetric building blocks lead to the formation of four two-dimensional(2D)COFs with distinct framework *** verify this concept,target synthesis was conducted to produce three COFs,whose structures were confirmed by powder X-ray diffraction and pore size distribution analysis.

关键词： reticular chemistry covalent organic framework connecting sequence building block

A luminescent one-dimensional covalent organic framework for organic arsenic sensing in water

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Chinese Chemical Letters 2024年第11期35卷 304-308页

作者： Chao Liu Chao Jia Shi-Xian Gan Qiao-Yan Qi guo-fang jiang Xin Zhao Advanced Catalytic Engineer Research Center of the Ministry of Education College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

Roxarsone(ROX)is a commonly used antibacterial and growth-promoting additive to animal *** development of an effective method for detecting ROX and its conversion products is of importance because of their potential harm to human health and ***,we report the designed synthesis of a novel one-dimensional covalent organic framework(1D COF),named EP-COF,and its application as a fluorescent probe for ROX ***-COF is constructed based on imine linkages,exhibiting high crystallinity,strong fluorescence emission,and good dispersibility in *** displays a remarkable capability to efficiently detect ROX,with an impressive detection limit of 4.5 nmol/***,EP-COF also offers advantages of excellent selectivity,and high structural *** work not only presents a promising approach for the detection of harmful substances like ROX,but also serves as a valuable reference for exploring application of 1D COFs in chemical sensing.

关键词： One-dimensional Covalent organic framework Fluorescent probe Roxarsone Sensing

The green synthesis of 2,3-dihydroquinazolin-4（1H）-ones via direct cyclocondensation reaction under catalyst-free conditions

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The green synthesis of 2,3-dihydroquinazolin-4（1H）-ones vi...

中国化学会第九届全国有机化学学术会议

作者： Shi-guo Zhang guo-fang jiang Lian-Sheng Liu Zong-Bo Xie Department of Applied Chemistry East China Institute of Technology

＜正＞2,3-Dihydroquinazoline-4（1H）-one derivatives belong to an important class of nitrogen heterocycles that attracted much attention because these quinazolinone scaffolds as core unit for a wide spectrum of nature plant alkaloids and pharmacological compounds and these derivatives exhibit various potential biological and pharmaceutical activities including anticonvulsant,

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XML空间频繁变化结构挖掘方法

计算机学报 2013年第2期36卷 317-326页

作者：李巍李雄飞郭建芳吉林大学计算机科学与技术学院长春130012 符号计算与知识工程教育部重点实验室长春130012

XML数据在实际使用过程中不断发生改变,针对XML数据动态可变的特点,提出一种根据XML数据变化过程挖掘XML空间频繁变化结构SFCS(Spatial Frequently Changing Structure)的方法,首先提出XML子结构空间度量方法,通过结构空间变化度SSCD、... 详细信息

XML数据在实际使用过程中不断发生改变,针对XML数据动态可变的特点,提出一种根据XML数据变化过程挖掘XML空间频繁变化结构SFCS(Spatial Frequently Changing Structure)的方法,首先提出XML子结构空间度量方法,通过结构空间变化度SSCD、版本空间变化度VSCD和空间变化程度SCD这3个度量值衡量XML子结构的空间变化频繁性并提出SFCS定义.进一步,提出一种用于保存XML空间变化信息和发现SFCS的数据模型SC-DOM,论证了XML编辑操作对子结构空间的影响并据此提出SC-DOM状态动态迁移方式,最后提出根据SC-DOM发现SFCS的算法并讨论算法复杂度.实验结果表明SFCS是频繁变化的结构,使用SC-DOM模型进行SFCS挖掘是有效且可扩展的.

关键词：数据挖掘 XML 频繁模式空间频繁变化结构 SC-DOM

Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao Li Yangfei Chen Yang jiang Xiaofei guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang guo-Cui Mao Hui-Lin jiang Bao-Xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang Li Shan guo Zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang guozhao fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

西南岩溶石山地区水窖水质状况及保护措施——以云南木美地下河流域为例

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水资源保护 2005年第1期21卷 18-20页

作者：郭芳姜光辉中国地质科学院岩溶地质研究所广西桂林541004

以云南省木美地下河流域为例,就西南岩溶区水窖的水质状况进行分析,结果表明水窖的水质状况尚为良好。由于水窖建材及水源类型等的不同,导致水窖水质的差异。水窖的污染类型有四类:颜色、肉眼可见物异常;超长时间放置导致生物性污染;pH... 详细信息

以云南省木美地下河流域为例,就西南岩溶区水窖的水质状况进行分析,结果表明水窖的水质状况尚为良好。由于水窖建材及水源类型等的不同,导致水窖水质的差异。水窖的污染类型有四类:颜色、肉眼可见物异常;超长时间放置导致生物性污染;pH值呈碱性;生活垃圾和污水引起HCO-3,Ca2+,Na+,Cl-等离子超标。建议加大力度,加强水源地的保护,改善水窖的水质。

关键词：水窖水质岩溶区云南