摘要
利用蒸发诱导自组装和后植入的方法,制备出了在紫外光照下可变色的二氧化硅/磷钼酸复合薄膜.结果表明,磷钼酸粒子很好的分散并牢牢附着在有机胺改性的二氧化硅介孔薄膜的孔道中;经紫外光照后发生电荷转移,杂多阴离子被还原成杂多蓝,由无色变成蓝色,而薄膜的褪色过程则与氧气存在有关.
The photochromic mesoporous silica/ molybdphosphoric acid composite thin films were prepared by evaporation induced self-assembly process and wetness impregnation.The results indicate that the PMo molecules are homogeneously distributed and immobilised inside silica mesopores modified by organic amine.The composite thin films change from colorless to blue under ultraviolet irradiation.It is shown that the charge transfer occurs by reduction of heteropolyanions accompanying the formation of heteropolyblues,and the bleaching process of composite thin films is closely related to the presence of oxygen.
出处
《光电技术应用》
2010年第2期42-44,50,共4页
Electro-Optic Technology Application
基金
国防科技大学校预研基金(JC06-01-06)
教育部新世纪优秀人才支持计划基金(2007)
关键词
光致变色
介孔复合薄膜
磷钼酸
二氧化硅
photochromism
mesoporous composite thin films
molybdphosphoric acid
silica
