Helical pitch of m-phenylene ethynylene foldamers by double spin labeling

被引：88

作者：

Matsuda, K

Stone, MT

Moore, JS ^{[1
]}

机构：

[1] Univ Illinois, Roger Adams Lab, Dept Chem, Urbana, IL 61801 USA

[2] Univ Illinois, Roger Adams Lab, Dept Mat Sci & Engn, Urbana, IL 61801 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2002年 / 124卷 / 40期

关键词：

D O I：

10.1021/ja027437m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To investigate the helical conformation of oligo(m-phenylene ethynylene)s, a pair of TEMPO spin labels were appended to the backbone. The two TEMPO radicals were separated by the four, five, and six repeating units. ESR spectra of the labeled oligomers were measured in chloroform and in ethyl acetate solvents in which the oligomers are disordered and folded, respectively. The measurement and analysis of ESR spectra revealed that six repeating units make one helical turn. Copyright © 2002 American Chemical Society.

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页码：11836 / 11837

页数：2

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