摘要
将Dawson结构的18-钼砷酸(As2Mo18)与喹啉形成的电荷转移盐分别与聚乙烯醇(PVA)和聚乙烯吡咯烷酮(PVP)进行薄膜组装,得到具有可逆光致变色性的H6As2Mo18O62·9C9H7N·1.5C2H6O/PVA和H6As2Mo18O62·9C9H7N·1.5C2H6O/PVP杂化薄膜,通过热重、IR、紫外-可见吸收光谱、循环伏安对杂化薄膜进行了表征,并对其光致变色性进行了研究。结果表明,光照后杂多酸与聚合物之间发生了电荷转移,杂多阴离子中的MoVI被还原为MoV,同时聚合物被氧化。
The charge-transfer complex of H6As2Mo18O62/quinoline was assembled in poly(vinyl alcohol) (PVA) matrix and polyvinylpyrrolidone(PVP) matrix. Two reversible photochromic hybrid films of H6As2Mo18O62·9C9H7N·1.5C2H6O/PVA and H6As2Mo18O·9C9H7N·1.5C2H6O/PVP were obtained. The two hybrid films were characterized by TG, IR, UV-Vis and CV. The results showed that the intervalence charge transfer(Mo^V→Mo^Ⅵ) underwent between the heteropolyacid and the polymer after UV irradiation of the hybrid films, accompanying with the reduction of Mow to Mov and simultaneous oxidation of the polymer.
出处
《广州化工》
CAS
2009年第4期86-88,共3页
GuangZhou Chemical Industry
基金
湖北省教育厅科研重点项目(D20091006)
湖北大学有机功能分子合成与应用教育部重点实验室开放基金项目(2007-KL-002)
关键词
杂多酸
喹啉
聚乙烯醇
聚乙烯吡咯烷酮
光致变色
heteropolyacids
quinoline
poly(vinyl alcohol)
polyvinylpyrrolidone
photochromism