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Absorption and emission spectroscopic characterization of platinum-octaethyl-porphyrin (PtOEP)

被引：155
作者：
Bansal, A. K.
Holzer, W.
Penzkofer, A.
Tsuboi, Taiju
机构：
[1] Univ Regensburg, Inst Expt & Angew Phys 2, D-93053 Regensburg, Germany
[2] Kyoto Sangyo Univ, Fac Engn, Kita Ku, Kyoto 6038555, Japan
来源：
CHEMICAL PHYSICS | 2006年 / 330卷 / 1-2期
基金：
日本学术振兴会;
关键词：
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;
D O I：
10.1016/j.chemphys.2006.08.002
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
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页码：118 / 129
页数：12
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