Direct observation of electron spin polarization transfer in triplet-triplet energy transfer between porphyrins and fullerene in fluid solution

Jun ichi Fujisawa, Yasunori Ohba, Seigo Yamauchi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Time-resolved electron paramagnetic resonance (EPR) has been used to investigate electron spin polarization transfer in triplet-triplet (T-T) energy transfer between porphyrins (MOEP and MTPP; M=H2, Zn) and fullerene (C60) in toluene solution. EPR spectra of excited triplet (T1) states of both a donor (porphyrins) and an acceptor (C60) were directly observed. The induced spin polarizations of T1 C60 were found to be the same as those of T1 porphyrins. From the analyses of time-profiles of both triplet signals, it was shown that T1 polarizations of porphyrins are transferred to T1 fullerene with conservation of spin polarizations via T-T energy transfer.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalChemical Physics Letters
Volume282
Issue number2
DOIs
Publication statusPublished - 1998 Jan 9

ASJC Scopus subject areas

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

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