Adsorption of a cationic porphyrin onto mesoporous silicas

被引：29
|
作者：
Yoshida, A
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：
RESEARCH ON CHEMICAL INTERMEDIATES | 2003年 / 29卷 / 7-9期
关键词：
mesoporous silica; adsorption; porphyrin; luminescence; aggregation;
D O I：
10.1163/156856703322601735
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The adsorption of a cationic porphyrin, tetrakis-(N-methyl-4-pyridiniumyl)porphine, into mesoporous silicas from solution of tetrakis-(N-methyl-4-pyridiniumyl)porphine p-toluene sulfonate was investigated. Irrespective of the pore size (2.4, 3.5 and 4.2 nm), the cationic porphyrin was adsorbed effectively onto mesoporous silicas to give brown-colored powders. Depending on the amounts adsorbed, which correlate with the average intermolecular distance, the porphines tend to aggregate (dimer).
引用
收藏
页码：721 / 731
页数：11
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