Optical Measurements on the BP III to Isotropic Phase Transition in Highly Chiral Liquid Crystals
作者:
JonathanB. Becker,
PeterJ. Collings,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1995)
卷期:
Volume 265,
issue 1
页码: 163-170
ISSN:1058-725X
年代: 1995
DOI:10.1080/10587259508041688
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Optical activity and light scattering measurements in the chiral-racemic system of 4-(2-methylbutyl) phenyl-4-hexyloxybenzoate (CE4) reveal a much larger decrease in the discontinuity at the third blue phase (BP III) to isotropic phase transition than reported previously using adiabatic scanning calorimetry on another compound. Whereas these new data show that the transition is still slightly discontinuous for the pure optical isomer of CE4, similar light scattering measurements on the pure optical isomer of 4″-(2- methylbutylphenyl)-4′-(2-methylbutyl)-4-biphenyl-carboxylate (CE2), which is more chiral than CE4, show no discontinuity at all.
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