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Facile Synthesis of Functional Poly(methyltriazolylcarboxylate)s by Solvent-and Catalyst-free Butynoate-Azide Polycycloaddition

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Chinese Journal of polymer science 2020年第1期38卷 17-23,I0005页

作者： Wei-Wen Chi Rong-yuan Zhang Ting Han Jian Du Hong-kun Li Wei-Jie Zhang Yong-Fang Li Ben Zhong Tang State and Local Joint engineering Laboratory for Novel Functional polymeric Materials Laboratory o f Advanced Optoelectronic MaterialsCollege o f ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China department o f Urology The First AfTiliated Hospital ofSoochow UniversitySuzhou 215006China department o f chemistry Hong Kong Branch o f Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University o f Science&TechnologyClear Water BayKowloonHong KongChina

The copper-catalyzed and metal-free azide-alkyne click polymerizations have become efficient tools for polymer synthesis. However,the 1,3-dipolar polycycloadditions between internal alkynes and azides are rarely employed to construct functional polymers. Herein, the polycycloadditions of dibutynoate(1) and tetraphenylethene-containing diazides(2) were carried out at 100 °C for 12 h under solvent-and catalyst-free conditions, producing soluble poly(methyltriazolylcarboxylate)s(PMTCs) with high molecular weights in high yields. The resultant polymers were thermally stable with 5% weight loss temperatures up to 377 °C. The PMTCs showed aggregation-induced emission(AIE)properties. They could work as fluorescent sensors for detecting explosive with high sensitivity, and generate two-dimensional fluorescent photopatterns with high resolution. Furthermore, their triazolium salts could be utilized for cell-imaging applications.

关键词： Solvent-and catalyst-free polycycloaddition Aggregation-induced emission Photopattern Cell imaging

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High Performance Electrospun Polynaphthalimide Nanofibrous Membranes with Excellent Resistance to Chemically Harsh Conditions

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Chinese Journal of polymer science 2021年第12期39卷 1634-1644页

作者： Meng-Jie yuan Zhao-Yu Hu Hong Fang Shu-Jing Li Hong-Tao Guo Ru-Bei Hu Shao-Hua Jiang kun-Ming Liu Hao-Qing Hou department of chemistry and Chemical engineering Jiangxi Normal UniversityNanchang 330022China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Faculty of Materials Metallurgy and chemistry Jiangxi University of Science and TechnologyGanzhou 341000China

Polynaphthalimide(PNI)with six-membered imide ring(_(6-)PI)has better chemical resistance than five-membered imide ring(_(5-)PI),but is difficult to be processed into nano fibers due to the poor *** this work,we proposed a template strategy to fabricate nanofiber _(6-)PI membranes and their composite *** _(6-)PI and _(6-)PI composite fibrous membranes were prepared using high-molecular-weight polymers _(5-)PAA and PVP as templates by ***,DMA,TGA and tensile tests were used to characterize their chemical structures,thermal stability and mechanical *** eye-observation,micro-morphology investigation and tensile tests were applied to evaluate the chemical resistance of nanofibrous membranes in strong acid,strong alkaline,and concentrated *** results demonstrated that 6-PI nano fibrous membra nes possessed the best thermal stability,best acid,alkaline,and salt resista nee with the highest mecha nical rete *** study will provide basic information for high-performance electrospun 6-PI nanofiber membranes and provide opportunities for applications of Pls in different chemically harsh environments.

关键词： Polynaphthalimide Nanofibrous membrane Strong acid Strong base Salt

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Understanding energetic disorder in electron-deficient-core-based non-fullerene solar cells

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science china chemistry 2020年第8期63卷 1159-1168页

作者： Jun yuan Chujun Zhang Honggang Chen Can Zhu Sin Hang Cheung Beibei qiu Fangfang Cai Qingya Wei Wei Liu Hang Yin Rui Zhang Jidong Zhang Ye Liu Huotian Zhang Weifang Liu Hongjian Peng Junliang Yang Lei Meng Feng Gao Shukong So Yongfang Li Yingping Zou college of chemistry and Chemical engineering Central South UniversityChangsha 410083China department of Physics and Institute of Advanced Materials Hong Kong Baptist UniversityHong KongChina beijing National Laboratory for molecular sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China department of Physics Chemistry and Biology(IFM)Linkoping UniversityLinkdping 58183Sweden State Key Laboratory of polymer Physics and chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of Physics and ElectronicChangsha 410083China

Recent advances in material design for organic solar cells(OSCs)are primarily focused on developing near-infrared nonfullerene acceptors,typically A-DA′D-A type acceptors(where A abbreviates an electron-withdrawing moiety and D,an electron-donor moiety),to achieve high external quantum efficiency while maintaining low voltage ***,the charge transport is still constrained by unfavorable molecular conformations,resulting in high energetic disorder and limiting the device ***,a facile design strategy is reported by introducing the"wing"(alkyl chains)at the terminal of the DA′D central core of the A-DA′D-A type acceptor to achieve a favorable and ordered molecular orientation and therefore facilitate charge carrier *** from the reduced disorder,the electron mobilities could be significantly enhanced for the"wing"-containing *** carefully changing the length of alkyl chains,the mobility of acceptor has been tuned to match with that of donor,leading to a minimized charge imbalance factor and a high fill factor(FF).We further provide useful design strategies for highly efficient OSCs with high FF.

关键词： non-fullerene organic solar cells electron-deficient-core energetic disorder molecular design strategy

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