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SOLID PHASE SYNTHESIS OF ISOXAZOLINES

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Chinese Journal of Reactive Polymers 2002年第1期11卷 55-60页

作者： SUNWeimin LUOJuntao huang wenqiang State Key Laboratory of Functional Polymer Material for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071China

The solid-phase synthesis of isoxazolines on 2-polystyrylsulfonamidoethanol resin is reported. 2-Polystyrylsulfonamidoethanol resin 1 was reacted with acryloyl chloride to afford 2-polystyrylsulfonylamidoethyl acrylate resin 2, which was further reacted with brominated aldoximes by [3+2] cycloaddition to give isoxazoline resin 4. Resin 4 was treated with aqueous 6 mol/L HCl solution to obtain isoxazolines in good yield and purity.

关键词： Solid phase synthesis 2-Polystyrylsulfonamidoethanol Isoxazoline

POLYSTYRYLSULFINATE RESIN AS REACTIVE INTERMEDIATE IN SOLID-PHASE ORGANIC SYNTHESIS AND SEPARATION

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Chinese Journal of Reactive Polymers 1996年第1期5卷 1-6页

作者： huang wenqiang Li Chenxi He Binglin State Key Laboratory of Functional Polymer Materials for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071China

This review deals with the preparation and application of Polymeric sulfinate resins as reactive intermediate in solid phase organic synthesis and separation.

关键词：反应媒介聚亚磺酸苯乙烯酯树脂固相有机合成固相有机分离

Modified NiFe-MOF with defects induced by-NH_(2)and-SH for enhanced adsorption and photocatalytic reduction of CO_(2)

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Journal of Materials Science & Technology 2024年第3期170卷 167-176页

作者： Ruting huang Yeyin Zhang wenqiang Li Wanxia Zhang Yong Fang Wenrui Zhang Anqi Cui Yu Ying Xianyang Shi Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui Province Key Laboratory of Wetland Ecosystem Protection and RestorationSchool of Resource and Environmental EngineeringAnhui UniversityHefei230601China Key Laboratory of Nutrient Cycling Resources and Environment of Anhui Institute of Soil and FertilizerAnhui Academy of Agricultural SciencesHefei230001China

In this study,a Ni-Fe metal-organic framework modified by-NH_(2)and-SH was synthesized using a sim-ple hydrothermal process for enhancing photocatalytic CO_(2)*** expected,the N2S-NiFe(NH_(2)-BDC/H_(4)DSBDC,2:1)displayed excellent photocatalytic CO_(2)reduction activity and high CO selectivity(12,412.23μmol g^(−1)h^(−1))under visible light irradiation(λ≥420 nm),which is 5 times that of ***,the excellent photocatalytic performance of N2S-NiFe can benefit from the rich defect trap site caused by the introduction of amino and sulfhydryl groups,accelerating charge transfer and promoting space charge separation,as supported by the photo-electrochemical *** better understand the CO_(2)adsorption mechanism,density functional theory calculations were performed,which revealed that the Niov site has more negative adsorption energy compared with the Feov *** study provides a simple strategy to establish efficient photocatalysts for CO_(2)reduction through the modification of organic ligands.

关键词： NiFe-MOF CO_(2)reduction Defect structure Photocatalytic

APPLICATION OF THE SULFONATE ESTER GROUP AS A LINKER FOR SOLID PHASE ORGANIC SYNTHESIS

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Chinese Journal of Reactive Polymers 2001年第1期10卷 21-26页

作者： SUN Weimin LUO Juntao huang wenqiang ZHU Xiaoxia The State Key Laboratory of Functional Polymer Material for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071China Department of Chemistry University of MontrealMontrealQuebecCANADA H3C 3J7

A use of Sulfonate ester as a linker in synthesis of (-aminoalkanols was reported. Diols were tethered onto polystyryl sulfonyl chloride resin, yielding sulfonate resins (2). After cleaved by diethyl amine, diisopropy... 详细信息

关键词： Polystyryl sulfonate ester Immobilization of diol (-Aminoalkanol Solid phase organic synthesis.

High room-temperature magnetization in Co-doped TiO_(2) nanoparticles promoted by vacuum annealing for different durations

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Journal of Semiconductors 2021年第7期42卷 71-77页

作者： wenqiang huang Rui Lin Weijie Chen Yuzhu Wang Hong Zhang College of Mechanical and Electrical Engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China

To clarify the contribution of oxygen vacancies to room-temperature ferromagnetism(RTFM)in cobalt doped TiO_(2)(Co-TiO_(2)),and in order to obtain the high level of magnetization suitable for spintronic devices,in this work,Co-TiO_(2) nano-particles are prepared via the sol-gel route,followed by vacuum annealing for different durations,and the influence of vacu-um annealing duration on the structure and room-temperature magnetism of the compounds is *** results reveal that with an increase in annealing duration,the concentration of oxygen vacancies rises steadily,while the saturation magnetiza-tion(Ms)shows an initial gradual increase,followed by a sharp decline,and even *** maximum Ms is as high as 1.19 emu/g,which is promising with respect to the development of spintronic *** analysis reveals that oxygen va-cancies,modulated by annealing duration,play a critical role in tuning room-temperature *** appropriate concentra-tion of oxygen vacancies is beneficial in terms of promoting RTFM in Co-TiO_(2).However,excessive oxygen vacancies will result in a negative impact on RTFM,due to antiferromagnetic superexchange interactions originating from nearest-neighbor Co^(2+)ions.

关键词： Co-doped TiO_(2)nanoparticles room-temperature ferromagnetism different annealing duration oxygen vacancy high magnetization

GreenPhos,a universal method for in-depth measurement of plant phosphoproteomes with high quantitative reproducibility

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Molecular Plant 2024年第1期17卷 199-213页

作者： Xiaoxiao Duan Yuanya Zhang Xiahe huang Xiao Ma Hui Gao Yan Wang Zhen Xiao Chengcheng huang Zhongshu Wang Bolong Li wenqiang Yang Yingchun Wang State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBejing 100101China University of Chinese Academy of Sciences Bejing 100049China Key Laboratory of Photobiology Instute of BotanyChinese Academy of SciencesBejing 100093China

Protein phosphorylation regulates a variety of important cellular and physiological processes in ***-depth profiling of plant phosphoproteomes has been more technically challenging than that of animal *** is largely due to the need to improve protein extraction efficiency from plant cells,which have a dense cell wall,and to minimize sample loss resulting from the stringent sample clean-up steps required for the removal of a large amount of biomolecules interfering with phosphopeptide purification and mass spectrometry *** this end,we developed a method with a streamlined workflow for highly efficient purification of phosphopeptides from tissues of various green organisms including Arabidopsis,rice,tomato,and Chlamydomonas reinhardtii,enabling in-depth identification with high quantitative reproducibility of about 11000 phosphosites,the greatest depth achieved so far with single liquid chromatography-mass spectrometry(LC-MS)runs operated in a data-dependent acquisition(DDA)*** mainstay features of the method are the minimal sample loss achieved through elimination of sample clean-up before protease digestion and of desalting before phosphopeptide enrichment and hence the dramatic increases of time-and *** method,named GreenPhos,combined with single-shot LC-MS,enabled in-depth quantitative identification of Arabidopsis phosphoproteins,including differentially phosphorylated spliceosomal proteins,at multiple time points during salt stress and a number of kinase substrate *** is expected to serve as a universal method for purification of plant phosphopeptides,which,if samples are further fractionated and analyzed by multiple LC-MS runs,could enable measurement of plant phosphoproteomes with an unprecedented depth using a given mass spectrometry technology.

关键词： plant phosphoproteomics phosphopeptides LC–MS Arabidopsis salt stress

Photon counting technique as a potential tool in micro-defect detection of epoxy insulation pull rod in gas-insulated switchgears

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High Voltage 2024年第2期9卷 267-274页

作者： Xianhao Fan Shu Niu Hanhua Luo Jizhong Liang Fang Liu wenqiang Li Weidong Liu Wensheng Gao Yulong huang Chuanyang Li Jinliang He School of Electrical Engineering Tsinghua UniversityBeijingChina Electric Power Research Institute Shangxi Power Grid CorporationTaiyuanShanxiChina Shandong Taikai Electrical Insulation Co. Ltd.TaianShandongChina

The micro-defects in epoxy-based insulation materials generate a local high electric field which results in continuous degradation,seriously endangering the insulation system of gas-insulated switchgears.A highly sensitive detection technique is reported for micro-defects of insulation pull rods based on the photon counting(PC)*** re-sults demonstrated that for an epoxy-based insulation pull rod,the photons released during electroluminescence and ionisation at 2 kV,which is less than the partial discharge inception voltage,can be clearly *** findings presented a strong correlation between photon counts and defect *** has been conducted to elucidate the mechanism behind defect-induced PC,employing the amplification of ionising luminescence through electric field distortion induced by micro defects and the augmentation of electroluminescence through the aggregation of trap *** this regard,the authors verified that PC can serve as a potential tool in the detection of micro-insulation defects,which also has huge potential in online insulation condition monitoring.

关键词： technique. insulation defect

ADSORPTION SELECTIVITY FOR Cu^(2+),Ni^(2+),Co^(2+)IONS USING CROSSLINKING CHITOSAN RESINS IMPRINTED BY METAL IONS

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Chinese Journal of Reactive Polymers 1999年第1期8卷 10-11页

作者： huang wenqiang HAN Lijun LI Chenxi HE Binglin The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation Institute of Polymer Chemistry Nankai University UniversityTianjin 300071 China

Metal ion-imprintedly crosslinked chitosan resin 1 and resin 2 were prepared by theuse of Cu2+ and Ni2+ as template ions and glutaraldehyde as crosslinking agent, *** investigation on the adsorption capacities and binding constants for Cu2+, Ni2+andCo2+ ions on chitosan resins, resin 1 and resin 2 exhibit the adsorption selectivity for themixture solution of 1:1 Cu2+ and Ni2+ ions. The adsorption selectivity of metal ion-imprintedresins for their template ions is much higher than that of uncrosslinked chitosan resin.

关键词： Chitosan Metal ion-imprinted chitosan resin Crosslinked chitosan resin Separation of metal ions Adsorption selectivity

A NEW POLYMER-BOUND 1,2-DIOL AS A PROTECTING AGENT FOR SYMMETRICAL DIALDEHYDE

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Chinese Journal of Polymer Science 1989年第4期7卷 346-353页

作者：任启生黄文强赵芬芝何炳林 Institute of Polymer Chemistry Nankai UniversityTianjin

A novel polymer-bound 1,2-diol, 3-polystyrylsulfonyl-1,2-propanediol (6) had been prepared by the reaction of sodium polystyrylsulfinate with allyl bromide, followed by oxidation and. hydrolysis or directly with 3-chloro-1,2-propanediol in the presence of a phase transfer catalyst, n-tetrabutylammonium iodide. The capacity of resin 6 for terephthaidehyde reached 1.43 mmol/g. The aldehydic groups attached to polymer 6 reacted with hydroxylamine hydrochloride or reduced by sodium borohydride giving p-formylbenzaldoxime (yield: 89%)and p-formyl-benzalcohol (yield: 734%), respectively. The high yields of these polymer-supported reactions showed that the polymer 6 possessed the effective isolation of its reactive sites.

关键词： 3-polystyrylsulfonyl-1 2 - propanediol polymer-supported protecting group,solid - phase organic synthesis cleavage of aldol linkages