A bent and asymmetrically hindered chiral alkyl chain in smectic-A phase of an antiferroelectric liquid crystal as observed by 2H-NMR

被引：28

作者：

Yoshida, S ^{[1
]}

Jin, B

Takanishi, Y

Tokumaru, K

Ishikawa, K

Takezoe, H

Fukuda, A

Kusumoto, T

Nakai, T

Miyajima, S

机构：

[1] Tokyo Inst Technol, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan

[2] Shinshu Univ, Fac Text Sci & Technol, Dept Kansei Engn, Nagano 3868567, Japan

[3] Sagami Chem Res Ctr, Kanagawa 2290012, Japan

[4] Tokyo Univ Agr & Technol, Dept Biotechnol, Tokyo 1848588, Japan

[5] Inst Mol Sci, Aichi 4448585, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1999年 / 68卷 / 01期

关键词：

antiferroelectric liquid crystal; conformational chirality; bent molecular structure; asymmetrically hindered alkyl chain; H-2-NMR;

D O I：

10.1143/JPSJ.68.9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The structure and dynamics of the alkyl chains are investigated by H-2-NMR for specifically deuterated samples of an antiferroelectric chiral smectic liquid crystal MHPOBC. The H-2-NMR spectrum for the chiral alkyl chain exhibits very small quadrupolar splittings, and the methylenes close to the chiral center give double splittings ascribable to two different quadrupolar splittings for each methylene unit. The unusual nature of the chiral chain is revealed; the chain is bent from the molecular long axis, and is asymmetrically hindered.

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页码：9 / 11

页数：3

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