CAJ | 학술논문

研究了紫外光照和温度对偶氮弯曲液晶极化电流的影响.在365 nm紫外光照下,这种偶氮化合物的极化强度随紫外光照时间增加而变化直至为零；当温度从150℃升高到175 ℃时,弯曲液晶的极化电流随温度线性降低,用Landau-de Gennes理论解释了这一现象.其极化情况随紫外光照和温度而变化的实验规律表明:在紫外光照下偶氮弯曲液晶发生了光致异构化、光裂解和热裂解作用.
연구료자외광조화온도대우담만곡액정겁화전류적영향.재365 nm자외광조하,저충우담화합물적겁화강도수자외광조시간증가이변화직지위령；당온도종150℃승고도175 ℃시,만곡액정적겁화전류수온도선성강저,용Landau-de Gennes이론해석료저일현상.기겁화정황수자외광조화온도이변화적실험규률표명:재자외광조하우담만곡액정발생료광치이구화、광렬해화열렬해작용.
By triangular wave method,the effects of ultraviolet irradiation and temperature on the polarization of a bent-core liquid crystal containing azobenzene were studied.Under the 365 nm ultraviolet irradiation,the switching currents were observed to change with the time of ultraviolet irradiation until they diminished.As the temperature increases from 150 ℃ to 175 ℃,the switching currents of the bent-core liquid crystal were observed to decrease linearly with temperature.The unusual temperaturedependent polarization was discussed in the light of Landau-de Gennes theory.The results demonstrated that photoisomerization,photolysis and thermolysis may take place in the bent-core liquid crystal containing azobenzene.