MOLECULAR-ORIENTATION IN POLYMER-DISPERSED LIQUID-CRYSTALS USING TIME-RESOLVED FT-IR

被引：16

作者：

KOHRI, S ^{[1
]}

KOBAYASHI, J ^{[1
]}

TAHATA, S ^{[1
]}

KITA, S ^{[1
]}

KARINO, I ^{[1
]}

YOKOYAMA, T ^{[1
]}

机构：

[1] NIPPON BIORAD LABS,CHUO KU,TOKYO 104,JAPAN

来源：

APPLIED SPECTROSCOPY | 1993年 / 47卷 / 09期

关键词：

TIME-RESOLVED FT-IR; TIME-RESOLVED MICRO-FT-IR; POLYMER-DISPERSED LIQUID CRYSTALS; MOLECULAR ORIENTATION;

D O I：

10.1366/0003702934067342

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Molecular orientation of nematic microdroplets in polymer-dispersed liquid crystal (PDLC) films has been investigated by time-resolved FT-IR (TR/FT-IR) in the presence of an applied electric field. Two kinds (fast and slow) of reorientation processes are found, and these may be attributed to reorientation of liquid crystal molecules at the surface and the central region of droplets. In addition, an induction time has been observed before the onset of the actual reorientation. It is suggested that there are no essential differences between rigid and flexible molecular segments with respect to reorientation dynamics of at least 1 ms time resolution. TR and micro-FT-IR techniques have been combined in order to study the reorientation dynamics of the different regions of droplets.

引用

页码：1367 / 1369

页数：3

共 4 条

[1] Molecular Reorientation in PDLC Films Monitored by (2)H-NMR: Electric Field Induced Reorientation Mechanism and Optical Properties [J].