Femtosecond time-resolved photo-absorption studies on the excitation dynamics of chromium(III) porphyrin complexes in solution

Masahiko Inamo, Chie Okabe, Takakazu Nakabayashi, Nobuyuki Nishi, Mikio Hoshino

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The electronic relaxation dynamics of the excited states of the chromium(III) tetraphenylporphyrin complexes, [Cr(TPP)(Cl)(L)] (L = H2O, pyridine, 1-methylimidazole), in toluene were studied by using femtosecond time-resolved absorption spectroscopy. The excited state (4T1) of 1-methylimidazole and pyridine complexes given by a very rapid intersystem crossing from 4S1 to 4T1 decays to establish the 4T1 6T1 equilibrium in several hundred picoseconds. The 4T1 state of [Cr(TPP)(Cl)(H2O)] exhibits a biexponential decay composed of the photodissociation process of the axial H2O ligand and the decay of the photolyzed intermediate to the ground state of [Cr(TPP)(Cl)].

Original languageEnglish
Pages (from-to)167-172
Number of pages6
JournalChemical Physics Letters
Volume445
Issue number4-6
DOIs
Publication statusPublished - 2007 Sep 13
Externally publishedYes

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Femtosecond time-resolved photo-absorption studies on the excitation dynamics of chromium(III) porphyrin complexes in solution'. Together they form a unique fingerprint.

  • Cite this