摘要
通过三聚氯氰的氯原子和聚乙烯醇的羟基之间脱氯化氢的反应,用含有2个偶氮苯的三聚氯氰衍生物改性聚乙烯醇(PVA)1788。红外光谱和核磁共振分析表明,在二氧六环和水混合溶剂中可以将偶氮苯成功接枝到PVA上,PVA中约每12个羟基就有1个发生反应。含有偶氮苯的PVA可以溶解在水和二甲亚砜中。其紫外可见吸收光谱与偶氮苯相似,并表现出偶氮苯的典型光致异构现象。
Poly（vinyl alcohol）1788（PVA）was modified by a cyanuric chloride derivative containing two azobenzene groups through dehydrochlorination reaction between the chlorine atom and the hydroxyl.Infrared spectra and 1 H-nmR analysis indicated that azobenzene moiety could be successfully grafted to PVA in the mixture of 1,4-dioxane and deionized water,and about one-twelfth of the hydroxyls in PVA participated in the reaction.The azobenzene-modified PVA can be dissolved in dimethyl sulphoxide and deionized water.Its UV-vis absorption spectrum is similar to that of azobenzene and exhibits typical reversible photoisomerization behaviors.
出处
《化工科技》
CAS
2013年第3期5-8,共4页
Science & Technology in Chemical Industry
基金
国家自然科学基金项目(21074085)
关键词
聚乙烯醇
偶氮苯
三聚氯氰
紫外可见吸收
光致异构
Poly（vinyl alcohol）
Azobenzene
Cyanuric chloride
UV-vis absorption
Photoisomerization
