A thermal and solvocontrollable cylindrical nanoshutter based on a single screw-sense helical polyguanidine

被引：69

作者：

Tang, HZ

Novak, BM ^{[1
]}

He, JT

Polavarapu, PL

机构：

[1] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA

[2] Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2005年 / 44卷 / 44期

关键词：

circular dichroism; helical structures; molecular devices; polyguanidine; switching;

D O I：

10.1002/anie.200501977

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Helix-sense-selective polymerization of an achiral carbodiimide using a chiral titanium catalyst yields the regioregular, stereoregular poly[N-(1-anthryl)-N′-n-octadecylguanidine] (poly-1). A reversible thermo- and solvent-driven switching phenomena is exhibited by poly-1 (see scheme) in electronic circular dichroism and optical rotation studies. Furthermore, the helicity of poly-1 is assigned and the mechanism of this switching process is elucidated. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.

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收藏

页码：7298 / 7301

页数：4

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