Journal
CHEMICAL PHYSICS LETTERS
Volume 468, Issue 1-3, Pages 46-51Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2008.11.075
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Funding
- Bundesministerium fur Bildung und Forschung (BMBF)
- University of Regensburg with the University of Southern California
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The emitting triplet state of Pt(4,6-dFppy)(acac) doped into n-octane is studied at cryogenic temperatures by site-selective high-resolution optical spectroscopy. The investigations reveal a very specific zero-field splitting (ZFS) pattern of the emitting T-1 state and the individual deactivation times of the substates to the singlet ground state S-0. Spin-lattice relaxation (SLR) processes occurring between the T-1 substates are ascribed to a combination of the direct and the Raman process. Due to the relatively long SLR time at low temperature, a Boltzmann distribution is not established directly after the excitation pulse below approximate to 2 K. (C) 2008 Elsevier B. V. All rights reserved.
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