Photoinduced energy and electron transfer in rubrene-benzoquinone and rubrene-porphyrin systems

Jafar Iqbal Khan, Abdullah Saud Abbas, Shawkat Mohammede Aly, Anwar Usman, Vasily Melnikov, Erkki Alarousu, Omar F. Mohammed

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Excited-state electron and energy transfer from singlet excited rubrene (Ru) to benzoquinone (BQ) and tetra-(4-aminophenyl) porphyrin (TAPP) were investigated by steady-state absorption and emission, time-resolved transient absorption, and femtosecond (fs)-nanosecond (ns) fluorescence spectroscopy. The low reduction potential of BQ provides the high probability of electron transfer from the excited Ru to BQ. Steady-state and time-resolved results confirm such an excited electron transfer scenario. On the other hand, strong spectral overlap between the emission of Ru and absorption of TAPP suggests that energy transfer is a possible deactivation pathway of the Ru excited state.
Original languageEnglish (US)
Pages (from-to)237-242
Number of pages6
JournalChemical Physics Letters
Volume616-617
DOIs
StatePublished - Nov 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Shawkat M. Aly is grateful for the post-doctoral fellowship provided by Saudi Basic Industries Corporation (SABIC). The work reported herein was supported by the King Abdullah University of Science and Technology.

ASJC Scopus subject areas

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

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