Intercalation of a free-base porphyrin into layered tetratitanic acid

Teruyuki Nakato*, Yumiko Iwata, Kazuyuki Kuroda, Masao Kaneko, Chuzo Kato

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


An intercalation compound of layered H2Ti4O9 with 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin (H2tmpyp4+) was synthesised by a guest-exchange method using the NPrH3+-HxTi4O9 intercalation compound as intermediate. The porphyrin is present as the free base without protonation. Its molecules are arranged with their planes inclined to the [Ti4O9]2- layers because of the high charge density of the host layers. Whereas the fluorescence spectrum of the intercalated H2tmpyp4+ indicated that the porphyrin is present as a monomer without stacked aggregation, the fluorescence decayed as rapidly as that of solid powders of H2tmpyp4+ 4I-, suggesting the porphyrin molecules interact with one another in the interlayer space.

Original languageEnglish
Pages (from-to)1405-1409
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number9
Publication statusPublished - 1993 Dec 1

ASJC Scopus subject areas

  • Chemistry(all)


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