HELIX-HELIX TRANSITION OF ALPHA-HELICAL POLY(BETA-PHENETHYL L-ASPARTATE) OBSERVED IN THE LYOTROPIC LIQUID-CRYSTALLINE STATE

被引：35

作者：

ABE, A

OKAMOTO, S

KIMURA, N

TAMURA, K

ONIGAWARA, H

WATANABE, J

机构：

[1] Department of Polymer Chemistry, Tokyo Institute of Technology, Tokyo, 152, 2-12-1 Ookayama, Meguro-ku

来源：

ACTA POLYMERICA | 1993年 / 44卷 / 01期

关键词：

D O I：

10.1002/actp.1993.010440108

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(beta-phenethyl L-aspartate) was found to exhibit a reversible transition from the right-handed to the left-handed alpha-helix in tetrachloroethane by raising temperature. The transition takes place in the dilute isotropic solution as well as in the anisotropic liquid-crystalline state around 80-degrees-C. H-2 NMR studies on the lyotropic system suggest that the inversion of the alpha-helix sense occurs in such a way that the nematic ordering of the backbone is not appreciably perturbed.

引用

页码：54 / 56

页数：3

共 8 条

[1] DEUTERIUM NMR ANALYSIS OF POLY(GAMMA-BENZYL L-GLUTAMATE) IN THE LYOTROPIC LIQUID-CRYSTALLINE STATE - ORIENTATIONAL ORDER OF THE ALPHA-HELICAL BACKBONE AND CONFORMATION OF THE PENDANT SIDE-CHAIN [J].