文献类型：期刊文献

英文题名：Bridged-cyclodextrin supramolecular hydrogels: host-guest interaction between a cyclodextrin dimer and adamantyl substituted poly(acrylate)s

作者：Wang, Jie[1];Xu, Yisheng[1];Wang, Yiming[2];Liu, Jianjia[2];Xu, Jun[2];Li, Li[2];Hanh-Trang Nguyen[3];Duc-Truc Pham[3];Lincoln, Stephen F.[3];Guo, Xuhong[2]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia

年份：2015

卷号：5

期号：57

起止页码：46067

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20152300908372);WOS:【SCI-EXPANDED(收录号:WOS:000355425700057)】；

基金：We gratefully acknowledge NSFC Grants 51403062, 51273063, 21306049 and 20774030, the Fundamental Research Funds for the Central Universities, the higher school specialized research fund for the doctoral program (222201313005 and 222201314029), the China Postdoctoral Science Foundation (2013M541485), the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-14C01), the Australian Research Council Grant DP110103177 and 111 Project Grant (B08021) for support of this work.

语种：英文

外文关键词：Tetherlines - Hydrogels - Dimers - Complexation

摘要：The formation of a hydrogel constructed from a cyclodextrin dimer (beta CD(2)ur) and adamantyl substituted poly(acrylate) was investigated by 2D NOESY H-1 NMR and isothermal titration calorimetry (ITC). The two methods generally demonstrate enhancement of complexation as the length of the hydrophobic tether increases, which is likely to be due to the cooperative effect. An optimal tether length of 6 was found to maximize the complexation between beta CD(2)ur and the polymer. Increasing the tether length to twelve carbons slightly reduces the complexation affinity revealed by ITC experiments. Meanwhile, rheological analysis indicates the maximum degree of crosslinking was achieved by PAAADhn/beta CD(2)ur complexation since the rigid structure of PAAAD restricts the crosslinking based on the host-guest complexation between the cyclodextrin dimer and adamantyl substituent and the competitive binding from the long alkyl tether in PAAADddn reduces the degree of crosslinking.