首页|Effects of red and green laser irradiations on the optical properties of an azo-containing bent-core liquid crystal

Effects of red and green laser irradiations on the optical properties of an azo-containing bent-core liquid crystal

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With the ultraviolet-visible spectrophotometry, we have investigated the effects of red laser (633 nm) and green laser (532 nm) irradiations on the optical absorption of the ethyl alcohol solutions of an azo-containing bent-core liquid crystal. As the irradiation duration increases, the optical absorptions at about 360 nm of the bent-core compound exhibit concentration dependent and irradiation-time dependent features. The absorptions of dilute solutions (~2.2 mg/litter) are not sensitive to the laser irradiation duration whereas the absorptions of higher concentrations (~10 mg/litter) decrease as the laser irradiation continues. Our results have demonstrated that laser irradiation induced thermolysis is responsible for the dissociation of the azo-linkages in azo-containing bent-core compound. The mechanisms on the red and green light irradiations are discussed.

bent-core liquid crystalazo-compoundcis-trans isomerizationthermolysis

Yuan Ming Huang、Fu-fang Zhou、Bao-gai Zhai

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

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

2010

Key engineering materials

Key engineering materials

ISSN:1013-9826
年,卷(期):2010.428/429
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