An acid-base switchable [2]rotaxane

被引：130

作者：

Elizarov, AM ^{[1
]}

Chiu, SH ^{[1
]}

Stoddart, JF ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2002年 / 67卷 / 26期

关键词：

D O I：

10.1021/jo020373d

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A chemically addressable, bistable [2]rotaxane, which incorporates a dumbbell-shaped component containing both secondary dialkylammonium and 1,2-bis(pyridinium)ethane recognition sites for its ring component, dibenzo[24]crown-8 (DB24C8), has been assembled. H-1 NMR spectroscopy has demonstrated that deprotonation (and reprotonation) of the secondary dialkylammonium (dialkylamine) recognition site induces the DB24C8 ring to move away from this site to the 1,2-bis(pyridinium)ethane one (and back again) in a discrete manner, particularly when the experiment is performed in CDCl3 solution.

引用

页码：9175 / 9181

页数：7

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