NOVEL CHIRAL DOPANTS FROM OPTICALLY-ACTIVE 2.4-PENTANEDIOL

被引:1
|
作者
SHIBATA, T [1 ]
KIMURA, M [1 ]
TAKANO, S [1 ]
OGASAWARA, K [1 ]
机构
[1] TOUHOKU UNIV,SENDAI,MIYAGI 111,JAPAN
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1993年 / 237卷
关键词
CHIRAL DOPANT; OPTICALLY ACTIVE 2.4-PENTANEDIOL; HELICAL PITCH;
D O I
10.1080/10587259308030161
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
A variety of chiral dopants from optically active 2.4-pentanediol (A) were prepared. [GRAPHICS] The temperature coefficient of induced cholesteric pitch of these materials (dP/dT) was measured to show that dP/dT depended on substituent group X. When X = Cl, compound (A) shows a short induced helical pitch and dP/dT = 0. Acetoxy and methoxy derivatives show negative dP/dT. Furthermore, when X = OH, compound (A) shows positive dP/dT.
引用
收藏
页码:483 / 485
页数:3
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