A study of molecular dynamics and phase transitions in solid MBBA
作者:
V.K. Dolganov,
I. Pócsik,
L. Rosta,
期刊:
Liquid Crystals
(Taylor Available online 1993)
卷期:
Volume 14,
issue 6
页码: 1895-1900
ISSN:0267-8292
年代: 1993
DOI:10.1080/02678299308027725
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The solid state polymorphism of liquid crystalline MBBA was investigated by temperature dependent NMR spin-lattice relaxation time measurements. The sensitivity of the method could be utilized because the correlation time of the measurement is in the correlation time region of molecular motion. Motional correlation time and activation energy values were determined and the results show some interesting changes between the different solid phases. Non-trivial variation in the end-chain rotational motion in two crystalline phases has been observed. Conclusions were drawn on the relationship between rotational molecular dynamics, intermolecular order and phase transitions.
点击下载:
PDF (312KB)
返 回