Protonation-induced switching of pleated foldamers of diaminonaphthalene-bipyridinium polymers

被引：4

作者：

Chen, Lan ^{[1
]}

Wang, Hui ^{[1
]}

Zhang, Dan-Wei ^{[1
]}

Zhou, Yaming ^{[1
]}

Li, Zhan-Ting ^{[1
]}

机构：

[1] Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dept Chem, Shanghai 200433, Peoples R China

来源：

TETRAHEDRON | 2017年 / 73卷 / 14期

基金：

美国国家科学基金会;

关键词：

Foldamers; Diaminonaphthalene; Donor-acceptor interaction; Protonation switching; Reversible; RADICAL-CATION DIMERIZATION; 3-DIMENSIONAL SUPRAMOLECULAR POLYMERS; COVALENT ORGANIC FRAMEWORKS; MOLECULAR STRANDS; AROMATIC AMIDE; OLIGOMERS; BINDING; DRIVEN; WATER; TRANSPORT;

D O I：

10.1016/j.tet.2017.02.034

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

1,5-diaminonaphthalene (DAN) and bipyridinium (BIPY2+) were copolymerized into NP1 and NP2 linked by acylhydrazone bonds. The formed intramolecular charge-transfer (CT) complex drove the linear foldamers to adopt pleated folding conformation. Upon protonation of the DAN units by triflic acid (TFSA), the pleated folding conformation unfolded to linear structure because of electron repulsion. And this linear structure can be refolded to pleated structure by titrating with triethylamine (TEA). 1,5-dinaphtho [38]crown-10 (DN38C10) can encapsulate bipyridinium group on the polymers after protonation. These processes were supported by UV vis and fluorescence spectroscopy studies. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1841 / 1844

页数：4