Czerwieniec, R. and Finkenzeller, Walter J. and Hofbeck, T. and Starukhin, A. and Wedel, A. and Yersin, Hartmut (2009) Photophysical properties of Re(pbt)(CO)₄ studied by high resolution spectroscopy. Chemical Physics Letters 468, pp. 205-210.
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Photophysical properties of Re(pbt)(CO)₄ are investigated at cryogenic temperatures and high magnetic fields. The highly resolved spectra show that the zero field splitting of the lowest triplet T₁ into three substates is smaller than 2 cm⁻¹. With this result, the T₁ state can be classified as only slightly MLCT-perturbed ³LC (³ππ*) state. Consistently, spin-lattice relaxation times are slow at T = 1.2 K and emission decay times with τ(I) = 960 μs, τ(II) = 320 μs, and τ(III) = 24 μs are long due to only small singlet admixtures. The vibrational satellite structures observed reflect different vibrational deactivation mechanisms and reveal similar geometries of the emitting triplet and the ground state.
|Institutions:||Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Light and Matter) > Prof. Dr. Hartmut Yersin|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Owner:||Prof. Dr. Hartmut Yersin|
|Deposited On:||17 Dec 2010 09:04|
|Last Modified:||17 Dec 2010 09:04|
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