期刊
CHEMISTRY OF MATERIALS
卷 17, 期 20, 页码 4958-4964出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm050837z
关键词
-
Two differently substituted azobenzenes having terminal trimethoxysilyl groups attached to the para position of the phenyl rings by means of different linkers have been used in combination with tetraethyl orthosilicate to prepare two periodic mesoporous organosilicas. As the corresponding precursors in solution, these solids exhibit a photochemical trans-to-cis isomerization of the azo group upon irradiation at 358 nm. The cis-configured isomer reverts to the trans isomer either photochemically upon irradiation at 450 nm or thermally at room temperature within days. As a consequence of the dramatic changes in the molecular dimension of azobenzene upon trans/cis isomerization, the adsorption of gold nanoparticles (1-10 nm) into the mesoporous silica depends reversibly on the trans or cis configuration of the azo groups grafted on the walls, the adsorption capacity of the trans-configured azobenzene being larger.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据