Adsorption of a cationic porphyrin onto mesoporous silicas

作者：Yoshida A; Kakegawa N; Ogawa M^*

来源：Research on Chemical Intermediates, 2003, 29(7-9): 721-731.

DOI：10.1163/156856703322601735

• mesoporous silica
• adsorption
• porphyrin
• luminescence
• aggregation

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).

• 出版日期2003