National Taiwan Ocean University Institutional Repository:Item 987654321/27619
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题名: Aggregated states of luminescent conjugated polymers in solutions
作者: R. Chang;J. H. Hsu;W. S. Fann;J. Yu;S. H. Lin;Y. Z. Lee;S. A. Chen
贡献者: NTOU:Institute of Optoelectronic Sciences
國立臺灣海洋大學:光電科學研究所
日期: 2000-01-28
上传时间: 2011-10-21T02:32:25Z
出版者: Chemical Physics Letters
摘要: Abstract:In order to study the electronic properties of the interchain state in light-emitting polymers, we have performed spectroscopic experiments for 2,5-dioctyloxy PPV (DOO-PPV) in both good (chloroform) and poor (2-methyl-tetrahydrofuran) solvents. The concentration-dependent absorption, photoluminescence (PL) spectra and dynamics of time-resolved PL can be explained by the coexistence of an intrachain and one kind of aggregated states in poor solution. The estimated lifetime and transition moment of the aggregated state lead to significant quantum efficiency of PL which is about 0.75 times that of the intrachain state. The PL spectrum for the aggregated state resembles that of a thin film, implying that the emissive species in thin film is more likely to be an aggregated state.
關聯: 317(1-2), pp.153-158
URI: http://ntour.ntou.edu.tw/handle/987654321/27619
显示于类别:[光電科學研究所] 期刊論文

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