Effects of red and green laser irradiations on the optical properties of an azo-containing bent-core liquid crystal
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/iitter) 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 crystal Azo-compound Cis-trans isomerization Thermolysis
Yuan Ming Huang Fu-fang Zhou Bao-gai Zhai
College of Physics & Electronic Information, Yunnan Normal University, Yunnan 650092, China Modem Educational Technology Center, Yunnan Normal University, Yunnan 650092, China
国际会议
2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)
昆明
英文
588-592
2009-08-02（万方平台首次上网日期，不代表论文的发表时间）