Bansal, A. K. and Holzer, W. and Penzkofer, Alfons and Tsuboi, Taiju (2006) Absorption and emission spectroscopic characterization of platinum-octaethyl-porphyrin (PtOEP). CHEMICAL PHYSICS, 330 (1-2). pp. 118-129. ISSN 0301-0104, 1873-4421
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The absorption and. emission spectroscopic behaviour of the platinum complexed porphyrin PtOEP (platinum-octaethyl-porphyrin) is studied at room temperature. Liquid solutions, doped films, and a neat film are investigated. The absorption cross-section spectra including singlet-triplet absorption, the triplet-singlet stimulated emission cross-section spectra, the phosphorescence quantum distributions, the phosphorescence quantum yields, and the phosphorescence signal decays are determined. In the neat film a red-shifted phosphorescent excimer emission is observed. In diluted solid solution (polystyrene and dicarbazole-biphenyl films) as well as in de-aerated liquid solutions (tetrahydrofuran, toluene, chloroform) high phosphorescence quantum yields are obtained. In air-saturated liquid solutions, the phosphorescence efficiency :is reduced by oxygen quenching. At intense short-pulse laser excitation the phosphorescence lifetime is shortened by triplet-triplet annihilation. No amplification of spontaneous emission was observed. (c) 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LIGHT-EMITTING DEVICES; OPTICAL-CONSTANTS MEASUREMENT; FORSTER ENERGY-TRANSFER; SOLID-STATE LASERS; CONJUGATED POLYMERS; OXYGEN SENSORS; THIN-FILM; ORGANIC ELECTROPHOSPHORESCENCE; RESPONSE CHARACTERISTICS; FLUORESCENCE BEHAVIOR; organometallic complex; PtOEP; platinum-octaethyl-porphyrin; doped film; neat film; liquid solutions; phosphorescence quantum yield; phosphorescence lifetime; singlet-triplet absorption; stimulated emission cross-section; triplet-triplet annihilation; amplified spontaneous emission |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Alfons Penzkofer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 19 Jan 2021 09:41 |
| Last Modified: | 19 Jan 2021 09:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33779 |
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