摘要
以乙基苯酰氧苯偶氮苯甲醛液晶分子为样品,研究了紫外光照条件下该样品光反应动力学过程,并分析了几种常见无机盐对样品反-顺异构化动力学过程的影响。在THF为溶剂条件下,以紫外光谱法研究该化合物光反-顺异构化反应需70 min,0~40 min反应动力学方程符合一级反应速率过程,按n_(无机盐)∶n_(样品)=1∶1、1∶2、2∶1添加比例研究了不同无机盐,及添加量对该液晶化合物紫外光反应动力学过程有不同影响,结果表明,当n_(CuSO_(4))∶n_(样品)=2∶1时,对化合物的反-顺异构化过程反应速率常数增加较大,而当n_(MnSO_(4)):n_(样品)=1∶2时,可以较大幅度降低反应过程的速度常数。
The trans-cis isomerization of ethylbenzazobenzaldehyde liquid crystal compounds in tetrahydrofuran, their kinetics of isomerization and influence caused by adding some common inorganic salts on them were studied. The reaction kinetics of the azo compound was studied thtough UV spectroscope, with the reaction was almost taking 70 minutes in THF as solvent. And within 0-40 minutes,the reaction kinetics equation agreed with the first order reaction rate process. Adding common inorganic salts in the azo compound according to the molar ratio of 1:1, 1:2 and 2:1 showed that different common inorganic salts and the amount of metal ions had different effects on the UV reaction kinetics of the liquid crystal compound. The study showed that when CuSO_(4) was added in the ratio to the sample of 2:1, the effect on the trans-cis isomerization process of the compound was the largest, and that while MnSO_(4) was added with the ratio to the sample of 1:2, the speed content of the isomerization was decreased greatly.
作者
郑敏燕
罗镇平
董丽丽
苏广进
陈恺杰
原中会
徐斯敏
ZHENG Minyan;LUO Zhenping;DONG Lili;SU Guangjin;CHEN Kaijie;YUAN Zhonghui;XU Simin(School of Chemistry and Chemical Engineering,Xianyang Normal University,Xianyang 712000,Shaanxi,China)
出处
《咸阳师范学院学报》
2021年第2期46-49,共4页
Journal of Xianyang Normal University
基金
国家自然科学基金项目(21102121)
咸阳市科技局科学技术研究计划项目(2017k02-19)
陕西省大学生创新创业训练计划项目(S201910722048)。
关键词
偶氮芳香醛液晶
动力学
无机盐
紫外光谱
azoaromatic aldehydes
isomeration kinetics
inorganic salts
UV reaction
