Effective luminescence quenching of tris(2,2-bipyridine)ruthenium(II) by methylviologen on clay by the aid of poly(vinylpyrrolidone)

被引：21
|
作者：
Kakegawa, N
Ogawa, M
机构：
[1] Waseda Univ, Dept Earth Sci, Shinjuku Ku, Tokyo 1698050, Japan
[2] Waseda Univ, Grad Sch Sci & Engn, Shinjuku Ku, Tokyo 1698050, Japan
来源：
LANGMUIR | 2004年 / 20卷 / 17期
关键词：
D O I：
10.1021/la036213u
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electron-transfer quenching of tris(2,2-bipyridine)ruthenium(II) by methylviologen in an aqueous suspension of clay in the presence of poly(vinylpyrrolidone) was investigated. The quenching behavior of the excited tris(2,2-bipyridine)ruthenium(II) on clay by the coadsorbed methylviologen indicated the homogeneous distribution of the adsorbed dyes. The quenching rate was high when the clay with larger particle size was used as the host. The adsorption of poly(vinylpyrrolidone) on clay resulted in the coadsorption of the tris(2,2-bipyridine)ruthenium(II) and methylviologen without segregation.
引用
收藏
页码：7004 / 7009
页数：6
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