Fluorescence studies on the photo-induced ligation in the excited singlet state of magnesium tetraphenylporphine

Seigo Yamauchi, Yasuko Suzuki, Tohru Ueda, Kimio Akiyama, Yasunori Ohba, Masamoto Iwaizumi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We found that axial ligation of pyridine occurs more efficiently in the excited singlet state than in the ground state for five-coordinated magnesium tetraphenylporphine (MgTPP) at room temperature in methylcyclohexane solution. The rates of association and dissociation of an axial ligand were determined from the decay of the fluorescence. The former process is faster than the latter by a factor of 8.5 in the ligand of 1 M pyridine. The results are interpreted in terms of the changes in electronegativity of the central Mg cation through the metal-porphyrin interaction.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalChemical Physics Letters
Volume232
Issue number1-2
DOIs
Publication statusPublished - 1995 Jan 6

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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