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Photo-instability in a binary mixture of banana-shaped and rod-shaped liquid crystals

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  • NETL
  • NSTL
  • Trans Tech Publications Ltd
By triangular wave method, we studied the effects of ultraviolet irradiation on the polarization of a binary liquid crystal mixture. The mixture was comprised of 94 wt% of banana-shaped liquid crystal 4-chloro-l,3-phenylene bis [4-(4-n-tetradecyl) phenylimino methyl] benzoate and 6 wt% of an azo-containing rod-shaped liquid crystal hexanoic acid 4-(4-ethoxy-phenylazo)-phenyl ester. Under the 365 nm irradiation for 40 minutes, the polarization of the mixture was observed to decrease 10% although the component of the banana-shaped liquid crystal was photostable. Our results demonstrated that photolysis took place in the component of azo-containing rod-shaped liquid crystal.

banana-shaped liquid crystal, photostability, spontaneous polarization, azobenzene complexphotoirradiationantiferroelectricity

Lan-li Chen、Bao-gai Zhai、Yuan Ming Huang

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Department of Electronics, Nanyang Institute of Technology, Henan 473004, China

Modem Educational Technology Center, Yunnan Normal University, Yunnan 650092, China

College of Physics & Electronic Information, Yunnan Normal University, Yunnan 650092, China

2010

10.4028/www.scientific.net/KEM.428-429.305

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.428/429
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