Adsorption of a cationic porphyrin onto mesoporous silicas

Atsuko Yoshida, Norishige Kakegawa, Makoto Ogawa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


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).

Original languageEnglish
Pages (from-to)721-731
Number of pages11
JournalResearch on Chemical Intermediates
Issue number7-9
Publication statusPublished - 2003


  • Adsorption
  • Aggregation
  • Luminescence
  • Mesoporous silica
  • Porphyrin

ASJC Scopus subject areas

  • Chemistry(all)


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