Photoinduced singlet charge transfer in a ruthenium(II) perylene-3,4: 9,10-bis(dicarboximide) complex

Victoria L. Gunderson, Elisha Krieg, Michael T. Vagnini, Mark A. Iron, Boris Rybtchinski, Michael R Wasielewski

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Elucidation of photoinduced charge transfer behavior in organic dye/metal hybrids is important for developing photocatalytic systems for solar energy conversion. We report the synthesis and photophysical characterization of a perylene-3,4:9,10-bis(dicarboximide) (PDI)-ruthenium(II) complex, bis-PDI-2,2′-bipyridineRu(II)Cl2(CNtbutyl) 2, which has favorable energetics, ΔGCS ≈ -1.0 eV, for singlet electron transfer from the Ru complex to PDI. Time-resolved optical spectroscopy reveals that upon selective photoexcitation of PDI, ultrafast charge transfer (1*PDI generates the Ru(III)-PDI-• ion pair. The resulting vibrationally hot Ru(III)-PDI-• ion pair exhibits fast relaxation (τ = 3.9 ps) and charge recombination (τCR = 63 ps). Our experimental and computational (DFT and TDDFT) studies show that energy-preserving photodriven singlet electron transfer can dominate in properly designed organic dye/metal complexes, making them of particular interest for use in artificial photosynthetic systems for solar fuels formation.

Original languageEnglish
Pages (from-to)7533-7540
Number of pages8
JournalJournal of Physical Chemistry B
Volume115
Issue number23
DOIs
Publication statusPublished - Jun 16 2011

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Perylene
Ruthenium
ruthenium
Charge transfer
electron transfer
Coloring Agents
Dyes
dyes
charge transfer
Ions
solar energy conversion
Electrons
Photoexcitation
Coordination Complexes
Metal complexes
photoexcitation
Energy conversion
Discrete Fourier transforms
metals
Solar energy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

Photoinduced singlet charge transfer in a ruthenium(II) perylene-3,4 : 9,10-bis(dicarboximide) complex. / Gunderson, Victoria L.; Krieg, Elisha; Vagnini, Michael T.; Iron, Mark A.; Rybtchinski, Boris; Wasielewski, Michael R.

In: Journal of Physical Chemistry B, Vol. 115, No. 23, 16.06.2011, p. 7533-7540.

Research output: Contribution to journalArticle

Gunderson, Victoria L. ; Krieg, Elisha ; Vagnini, Michael T. ; Iron, Mark A. ; Rybtchinski, Boris ; Wasielewski, Michael R. / Photoinduced singlet charge transfer in a ruthenium(II) perylene-3,4 : 9,10-bis(dicarboximide) complex. In: Journal of Physical Chemistry B. 2011 ; Vol. 115, No. 23. pp. 7533-7540.
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