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气相法生长N-salicylideneaniline单晶及其偏振特性
引用本文:赵立竹,申猛燕,後藤武生.气相法生长N-salicylideneaniline单晶及其偏振特性[J].物理学报,2001,50(8):1540-1544.
作者姓名:赵立竹  申猛燕  後藤武生
作者单位:(1)东北师范大学物理系,长春130024; (2)日本东北大学理学部,日本仙台980
摘    要:用气相法生长成足够大的N-salicylideneaniline(SA)单晶,并研究SA单晶对不同偏振探测光的光致变色性质.在不同温度和不同偏振的情况下,测试了光致着色和光致褪色过程中光密度变化的时间依存性质,并通过计算获得SA单晶用不同偏振探测光测得的激活能.并通过理论计算和实验结果发现,在200K温度用紫外光照射样品时,生成的酮分子中约有60%是trans酮构型和约40%的cis酮构型 关键词: N-salicylideneaniline单晶生长 光致变色 偏振特性

关 键 词:N-salicylideneaniline单晶生长  光致变色  偏振特性
收稿时间:2001-03-27
修稿时间:2001年3月27日

GROWING N-SALICYLIDENEANILINE (SA) SINGLE CRYSTAL BY PHYSICAL VAPOUR DEPOSITATION AND ITS POLARIZATION PROPERTY
ZHAO LI-ZHU,SHEN MENG-YAN and T. GOTO.GROWING N-SALICYLIDENEANILINE (SA) SINGLE CRYSTAL BY PHYSICAL VAPOUR DEPOSITATION AND ITS POLARIZATION PROPERTY[J].Acta Physica Sinica,2001,50(8):1540-1544.
Authors:ZHAO LI-ZHU  SHEN MENG-YAN and T GOTO
Abstract:We have grown clean N-salicylideneaniline (SA) single crystals large enough in size by physical vapour depositaion. The photochromism of the SA single is studied by probe light at different optical polarizations At different temperatures and different polarizations,we measured the time dependence of the change of optical density in the colored crystal in the forward and backward reactions.The activation energies of the single crystal are obtained in different optical polarizations.Based on theoretical calculations,the structure configurations of the SA molecules in the colored keto form are analyzed.When an ultraviolet (UV) light is irradiated on the sample at 200 K,about 60% of the ketone form molecules are found to be in the trans-configuration and about 40% of them in the cis-configuration.
Keywords:growing N-salicylideneaniline single crystal  photochromism  polarization property
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