Ultrafast electronic deactivation and vibrational dynamics of photoexcited uranium(IV) porphyrin sandwich complexes

Osman Bilsel, Stanley N. Milam, Gregory S. Girolami, Kenneth S Suslick, Dewey Holten

Research output: Contribution to journalArticlepeer-review

Abstract

The ground- and excited-state optical spectra of two UIV bis(porphyrin) sandwich complexes reveal features characteristic of porphyrins held within van der Waals contact. The photoexcited complexes exhibit ultrafast (∼1 ps) deactivation to the ground electronic state in a multistep process involving intersystem crossing into the triplet manifold and subsequent relaxation via ligand-field (f,f) excited state(s). This ultrafast and highly energetic electronic deactivation is followed by complex time-dependent spectral changes on the picosecond time scale that are ascribed to vibrational relaxation in the ground electronic state.

Original languageEnglish (US)
Pages (from-to)7216-7221
Number of pages6
JournalJournal of physical chemistry
Volume97
Issue number28
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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