4.5 Article

Excited State Dynamics of Isocyano Rhenium(I) Phenanthroline Complexes from Time-Resolved Spectroscopy

Journal

CHEMPHYSCHEM
Volume 20, Issue 15, Pages 1946-1953

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201900581

Keywords

density functional calculations; isocyanide ligands; Raman spectroscopy; rhenium; time-resolved spectroscopy

Funding

  1. Hong Kong University Grants Committee Area of Excellence Scheme [AoE/P-03-08]
  2. General Research Fund [CityU 11303318]
  3. City University of Hong Kong [7004658]
  4. Hong Kong UGC Special Equipment Grant [SEG HKU09]
  5. UGC Special Equipment Grant [SEG-HKU-7]
  6. University of Hong Kong Development Fund 2013-2014 project New Ultrafast Spectroscopy Experiments for Shared Facilities

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The photophysical processes in a series of isocyano Re(I) phenanthroline complexes {[Re(CNR)(n)(CO)(4-n)(phen)](PF6); n=2, 3, 4, R=2,6-(Pr-i)(2)C6H3- or Bu-t- (n=2)} in acetonitrile have been studied by resonance Raman spectroscopy, transient resonance Raman spectroscopy, and femtosecond / nanosecond transient spectroscopy to elucidate the nature of their electronic transitions and emissive excited state(s). The kinetics of the intersystem crossing, vibrational relaxation and radiative decay of the metal-to-ligand charge transfer {MLCT [d pi(Re)->pi*(phen)]} excited state have also been determined.

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