文献类型：期刊文献

英文题名：Multi-stimuli responsive supramolecular polymers and their electrospun nanofibers

作者：Chen, Jianzhuang[1];Zhang, Shuangshuang[2];Sun, Fugen[1];Li, Nan[1];Cui, Kun[2];He, Jianping[1];Niu, Dechao[1];Li, Yongsheng[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Lab Low Dimens Mat Chem, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Synthet & Self Assembly Chem Organ Funct, 345 Lingling Lu, Shanghai 200032, Peoples R China

年份：2016

卷号：7

期号：17

起止页码：2947

外文期刊名：POLYMER CHEMISTRY

收录：;EI(收录号：20162002395569);WOS:【SCI-EXPANDED(收录号:WOS:000374878100005)】；

基金：This work was financially supported by the National Natural Science Foundation of China (grant no. 21404039 and 51172070), the China Postdoctoral Science Foundation (grant no. 2014M560304 and 2015T80406), and the Fundamental Research Funds for the Central Universities (grant no. WD1414042). The authors are grateful to Dr Xuzhou Yan, Xiaofan Ji, Xiaodong Chi, and Peifa Wei from Zhejiang University and Dr Chengyou Han from China University of Petroleum (East China) for their great help and useful discussions in this work.

语种：英文

外文关键词：Supramolecular chemistry - Salts - Self assembly - Complexation - Functional polymers

摘要：A novel type of multi-stimuli responsive supramolecular polymer (MRSP) has been successfully constructed based on the self-assembly of heteroditopic macromonomers in a mixed solvent (CDCl3 : CD3CN = 2 : 1, v/v), which contain benzo-21-crown-7 (B21C7) host units and secondary ammonium salt guest moieties at each end of a poly(epsilon-caprolactone) (PCL) chain. Owing to the reversible host-guest complexation between B21C7 and the secondary ammonium salt, the resulting MRSPs exhibit multistimuli responsiveness to cations, pH, anions and temperature. More interestingly, nanofibers were facilely obtained via the solution electrospinning of a MRSP, which presented enhanced degradation behaviors in the presence of K+, Cl-, Et3N, or heating, indicating a multiple stimuli-responsive nature.