文献类型：期刊文献

英文题名：The synthesis of a rigid conjugated viologen and its cucurbituril pseudorotaxanes

作者：Song, Yingfeng;Huang, Xinghua;Hua, Haojie;Wang, Qiaochun[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2017

卷号：137

起止页码：229

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20164502979071);WOS:【SCI-EXPANDED(收录号:WOS:000390182700027)】；

基金：This work was financially supported by NSFC/China (21572063, 21372076), the Science Fund for Creative Research Groups (21421004), and the Programme of Introducing Talents of Discipline to Universities (B16017).

语种：英文

外文关键词：Cucurbiturils; Viologen; Host-guest interaction; Pseudorotaxanes; Electrochemistry

摘要：A linear viologen (bis[4-(4-pyridinyl)phenyl] viologen, BPPV) characterized by a fully-conjugated structure was synthesized through Zinke reaction. BPPV consists of a unique linear sexiaryl structure and is apt to be encapsulated by cucurbit[n]uril (CB[n], n = 6 or 7) in aqueous solution, forming a [2]pseudorotaxane (BPPV subset of CB[6]) with CB[6] in a central-included mode and a final [3]pseudorotaxane (BPPV subset of 2CB[7]) with CB[7] in a side-included manner. The reduction potentials became higher for BPPV subset of 2CB[7], and the highest for BPPV subset of CB[6] when compared with BPPV. BPPV, BPPV subset of CB[6] and BPPV subset of 2CB[7] all underwent reversible one-electron redox reaction in aqueous solution, accompanied by obvious color changes, showing a good prospect in the fabrication of electrochromic display devices. (C) 2016 Elsevier Ltd. All rights reserved.