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Journal of Rare Earths 2022年第3期40卷 421-427,I0003页

作者： Ping Wu Qianli Ma Wensheng Yu jinxian wang Guixia Liu Xiangting Dong Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province Changchun University of Science and TechnologyChangchun 130022China

Eu^(3+) ions were grafted onto the surface of electrospun polyacrylonitrile(PAN)nanofibers through coordination effect between C≡N groups on PAN nanofibers and Eu^(3+) ions,and benzoic acid(BA)was introduced as an assistant *** impacts of concentrations of Eu^(3+) ions and BA,and reaction time on the properties of final products were *** results reveal that Eu^(3+) ions can be successfully grafted onto PAN nanofibers,but the fluorescence intensity of the obtained PAN@Eu^(3+) nanofibers is very *** BA is introduced as the assistant ligand,the fluorescence intensity of the obtained PAN@(Eu^(3+)/BA)nanofibers is greatly stronger than that of PAN@Eu^(3+)nanofibers,and meanwhile,concentration quenching effect of Eu^(3+) ions can be effectively ***,the superior structure of PAN@(Eu^(3+)/BA)nanofibers not only brings the effective utilization of precious elemental europium,but also guarantees high mechanical strength.

关键词： Electrospinning Polyacrylonitrile Nanofibers Fluorescence Rare earths

The etching strategy of zinc anode to enable high performance zinc-ion batteries

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Journal of Energy Chemistry 2024年第1期88卷 125-143,I0004页

作者： Xueqing Fu Gaopeng Li Xinlu wang jinxian wang Wensheng Yu Xiangting Dong Dongtao Liu School of Chemistry and Environmental Engineering Changchun University of Science and TechnologyChangchun 130022JilinChina Department of Chemistry Northeast Normal UniversityChangchun 130024JilinChina

Zinc-ion batteries(ZIBs)are considered to be one of the most promising candidates to replace lithium-ion batteries(LIBs)due to the high theoretical capacity,low cost and intrinsic ***,zinc dendrites,hydrogen evolution reaction,surface passivation and other side reactions will inevitably occur during the charging and discharging process of Zn anode,which will seriously affect the cycle stability of the battery and hinder its practical *** etching strategy of Zn anode has attracted wide attention because of its simple operation and broad commercial prospects,and the etched Zn anode can effectively improve its electrochemical ***,there is no comprehensive review of the etching strategy of Zn *** review first summarizes the challenges faced by Zn anode,then puts forward the etching mechanisms and properties of acid,salt and other ***,based on the above discussion,the challenges and opportunities of Zn anode etching strategy are proposed.

关键词： Zinc-ion batteries Zn anode Etching 3D structures Dendrite-free

Cobalt-Catalyzed Vinylation of Organozinc Reagents with Aldehydes

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Chemical Research in Chinese Universities 2001年第Z1期17卷 184-185页

作者： wang jinxian Department of Chemistry Northwest Normal University

Transtion metal catalyzed vinylation of organic halides are known to be a very convenient method for forming carbon-carbon bonds at unsubstituted vinylic position. The versatility of stilbenes is well known because of its various biological active components, the variety of its reactions in organic syntheses, and its ability to function as a bonding partner for metals in complexes. Many methods have been described for the synthesis of stilbenes. The reduction, dehydrogenation, and elimination reactions leading to stilbenes without formation of new carbon-carbon bonds are known to be a very convenient methods. Synthetically more important are the dimerization reactions: oxidative or eleminative dimerization of a suitable methylarene often constitutes the method of choice for the preparation of a symmetric stilbene. Meerwein arylation and Heck reaction are prominent examples for the synthesis of stilbenes from arenes and styrenes. Moreover, condensation reactions of a nucleophilic with an electrophilic arylmethyl compound include Knoevenagel type reactions and the very general Wittig and Wittig-Horner reactions are also known methods.

关键词： convenient method active components Heck reaction method of

Microwave Assisted Cross-Coupling Reaction of Sodium Tetraphenylborate with Aroyl Chlorides on Palladium-Doped KF/Al2O

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Chemical Research in Chinese Universities 2001年第Z1期17卷 186-187页

作者： wang jinxian Department of Chemistry Northwest Normal University

The palladium-catalyzed cross-coupling reaction of organoborate compounds with organic electrophiles is very attractive method for organic synthesis. These coupling reactions offer a powerful tool for the formation of carbon-carbon bonds. 1 In the past few years a number of methods have been devoloped which permit the use of organoboron compounds that are thermally stable and inert to water and oxygen. Further these coupling reactions have been used successfully for the synthesis of natural products, pharmaceutical intermediates, and combinatiorial libraries of organic compounds. Sodium tetraphenylborate is a stable, non-toxic and has been used as a phenylating agent affording σ-phenyl complexes of various transition metals by the transfer of a phenyl group from boron to metals. Phenyl transfer from this reagent to some organopalladium complexes making a new carbon-carbon bond has also been noted. Uemura and Huang reported respectively that Pd(0) or Si-P-Pd(0)-catalyzed reaction of acyl chlorides and NaBPh4 proceeded in THF to give the corresponding phenyl ketones. However, only one phenyl group out of four in the borate was available for transfer. Recently, Bumagin reported that the cross-coupling reaction of NaBPh4 with acyl chlorides in the presence of Pd(OAc)2 and Na2CO3 in dry or aqueous acetone to give high yields of unsymmetric ketones. However, the reaction time is long(1-6 h).

关键词： acyl chlorides transition metals organic synthesis organic compounds natural products reaction time transfer of

A Convenient Synthesis of Conjugated Acetylenic Ketones by Copper(l)-Catalyzed under Microwave Irradiation

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Chemical Research in Chinese Universities 2001年第Z1期17卷 190-191页

作者： wang jinxian Department of Chemistry Northwest Normal University

Alkynyl ketones are useful precursors and intermediates in synthetic organic chemistry1 and has evoked considerable interest. A number of methods for the synthesis of conjugated acetylenic ketones involve the reaction a metal acetylide with an acyl chlorides or another carboxylic acid derivative have been developed 2. Recently, the synthesis of α, β-conjugated acetylenic ketones catalyzed by Pd(Ⅱ) or by copper(Ⅰ)pd(Ⅱ) reaction of 1-alkynes and acyl chlorides have been described. The acylation of terminal alkynes by acyl chlorides in the presence of catalytic amounts copper(Ⅰ) salts leading to α, β-conjugated acetylenic ketones has also been reported. However, many of these reactions suffer from lack of high pressure (17 atm), long reaction time (30 h)and require low temperatures (-78℃). Our work involves the synthesis of conjugated acetylenic ketones via the reaction of terminal alkynes with aroyl chlorides in the presence of cuprous iodide under microwave irradiation conditions.

关键词： acyl chlorides microwave irradiation low temperatures carboxylic acid reaction time high pressure methods for

Numerical Range of the Linear Combination of Volterra Operator and Its Adjoint

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Journal of Mathematical Research with Applications 2023年第2期43卷 234-240页

作者： jinxian wang Yuxia LIANG School of Mathematical Science Tianjin Normal University

The classical Volterra operator V and its adjoint operator V*play important roles in the complex space L2[0, 1]. As to the properties of linear combination of V and V*, we present the equivalent condition ensuring z1V +z2V*（z1, z2∈ C） satisfies the accretive property. Then an accurate representation of the numerical range of（u+iv）I +mV +n V*（u, v, m, n ∈ R, m+n ≥ 0）is described in this paper.

关键词： Volterra operator the adjoint operator numerical range

Amphipathic Janus Nanofibers Aerogel for Efficient Solar Steam Generation

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Energy & Environmental Materials 2024年第4期7卷 422-432页

作者： Rui wang Jinshuo Deng Ping Wu Qianli Ma Xiangting Dong Wensheng Yu Guixia Liu jinxian wang Lei Liu Chongqing Research Institute Changchun University of Science and TechnologyChongqing 401135China Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province Changchun University of Science and TechnologyChangchun 130022China

Solar steam generation is a promising water purification technology due to its low-cost and environmentally friendly applications in water purification and ***,hydrophilic or hydrophobic materials alone are insufficient in achieving necessary characteristics for constructing highquality solar steam generators with good comprehensive ***,novel hydrophile/hydrophobe amphipathic Janus nanofibers aerogel is designed and used as a host material for preparing solar steam *** product consists of an internal cubic aerogel and an external layer of photothermal *** internal aerogel is composed of electrospun amphipathic Janus *** to the unique composition and structure,the prepared solar steam generator integrates the features of high water evaporation rate(2.944 kg m^(-2)h^(-1)under 1 kW m^(-2)irradiation),selffloating,salt-resisting,and fast performance recovery after ***,the product also exhibits excellent properties on desalination and removal of organic *** with traditional hydrophilic aerogel host material,the amphipathic Janus nanofibers aerogel brings much higher water evaporation rate and salt resistance.

关键词： aerogels electrospinning photothermal materials solar desalination solar steam generation

Decorating rare-earth fluoride upconversion nanoparticles on AuNRs@Ag core-shell structure for NIR light-mediated photothermal therapy and bioimaging

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Journal of Rare Earths 2022年第2期40卷 193-200,I0001页

作者： Jingzhi Dou Bei Chen Guixia Liu Xiangting Dong Wensheng Yu jinxian wang Yunxiao Zhang Zhanguo Li Jiang Zhu Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province Changchun University of Science and TechnologyChangchun 130022China Key Laboratory of Artificial Micro-and Nano-Structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072China Tianjin Jinhang Technical Physics Institute Tianjin 300070China School of Optoelectronic Engineering Changchun University of Science and TechnologyChangchun 130022China School of Foreign Languages Changchun University of Science and TechnologyChangchun 130022China

Photothermal therapy(PTT)has presented its inherent application value in cancer ***,single-functional photothermal materials cannot meet the precise diagnosis and treatment of cance *** re,it is important to design a nanocomposite that has both high therapeutic efficiency and multimodal imaging *** our work,a new nanostructure of gold nanorods(AuNRs)with silver shells decorated by BaGdF5:Yb^(3+),Er^(3+)nanoparticle was synthesized by a simple *** biostability of AuNRs is increased by coating with silver shells,and the AuNR@Ag nanoparticles can be used as excellent surface enhanced Raman scattering(SERS)***,the modification of BaGdF5:Yb^(3+),Er^(3+)nanoparticles provides the possibility of real-time optical imaging of the tumor *** the irradiation of NIR laser,the AuNR@Ag/BaGdF5:Yb^(3+),Er^(3+)nanocomposites(NCs)have strong upconversion emission and excellent photothermal conversion ***,the NCs show low cytotoxicity and good biocompatibility in MTT cytotoxicity ***,the NCs are also exceptional contrast agents for CT *** in vitro photothermal therapy test,NCs show excellent killing efficiency on tumor ***,the multifaceted research of AuNR@Ag/BaGdF5:Yb^(3+),Er^(3+)multifunctional nanomaterials provides a break for high-efficiency tumor photothermal therapy and multimodal imaging.

关键词： Multifunctional nanocomposites Photothermal therapy Multimodal imaging Rare earths

微波辐射下水相中一锅法合成多芳基取代1,2-二氮杂衍生物

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化学通报 2008年第4期71卷 317-320页

作者：施小宁王进贤天水师范学院生命科学与化学学院天水741001 西北师范大学化学与化工学院兰州730070

微波辐射下,以芳香醛和芳香酮为起始原料,由一锅法合成2,4,6-三芳基硫代吡喃盐,然后直接加入水合肼反应,几乎以定量收率仅只生成3,5,7-三芳基-4H-1,2-二氮杂衍生物。该法以水为反应溶剂且中间盐不用分离,具有操作简单、条件温和、产... 详细信息

微波辐射下,以芳香醛和芳香酮为起始原料,由一锅法合成2,4,6-三芳基硫代吡喃盐,然后直接加入水合肼反应,几乎以定量收率仅只生成3,5,7-三芳基-4H-1,2-二氮杂衍生物。该法以水为反应溶剂且中间盐不用分离,具有操作简单、条件温和、产率高、环境友好等优点。产物经元素分析、1H NMR、MS表征了其结构。

关键词：微波辐射一锅法水相反应 3,5,7-三芳基-4H-1, 2-二氮杂革衍生物 2,4,6-三芳基硫代吡喃盐水合肼

REACTIONS OF DIAZONIUM SALTS AND OXIME——SYNTHESIS OF ARYLALDEHYDES KETONES, NITRILES, CARBOXYLIC ACIDS AND AMIDES

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Chinese Science Bulletin 1981年第11期26卷 1055-1056页

作者：王进贤 Gansu Teachers University

The arylation of unsaturated compounds by diazonium salts with copper salt catalysis was first disclosed by Hans Meerwein. Reactions of diazonium salts and oximes of simple constitution gave aromatic aldehydes and ket... 详细信息

关键词： aldehydes aromatic unsaturated convenient catalysis constitution amines NITRILES salts preparing