Dynamic Properties of the Phosphorescent Triplet State of 9<I>H</I>-Thioxanthen-9-one (Thioxanthone) from Optically Detected Magnetic Resonance Spectroscopy
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概要
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A variety of optically detected magnetic resonance (ODMR) experiments have been performed on the lowest excited triplet state of 9<I>H</I>-thioxanthen-9-one at 1.4 K. The absorption and phosphorescence excitation spectra were also measured to supplement the ODMR studies. The results were analyzed to determine the mechanisms responsible for the radiative decay and intersystem crossing processes. The z sublevel has large activity in vibronic bands due to non-totally symmetric vibrations. The intensity mainly comes from mechanisms involving vibronic coupling between <SUP>1</SUP><I>n</I>,π<SUP>*</SUP> and <SUP>1</SUP>π,π<SUP>*</SUP> states. The y sublevel is selectively affected by the introduction of the sulfur atom, because of the increased importance of spin orbit coupling with <SUP>1</SUP>σ′,π<SUP>*</SUP> state which is largely localized on the thioether group.
- 公益社団法人 日本化学会の論文
著者
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Kinoshita Minoru
The Institute For Solid State Physics The University Of Tokyo
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Suga Kazuhiko
The Institute for Solid State Physics, The University of Tokyo
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