Benzene excimer fluorescence in Dibenzophenanthroline thin film

IF 3.1 3区 化学 Q3 CHEMISTRY, PHYSICAL
Jiafen Lin , Saran Long , Animesh Ghosh , Andrew C. Grimsdale , Xiaojun Peng , Licheng Sun , Gagik G. Gurzadyan
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引用次数: 0

Abstract

Ultrafast relaxation dynamics of 13,14-diphenyldibenzo[b,j][4,7]phenanthroline (DBP3) thin film were studied with various time-resolved spectroscopic techniques including TCSPC, fluorescence up-conversion and fs transient absorption spectroscopy. Two fluorescence emission bands originating from S1 state of phenanthroline and intramolecular benzene excimer were observed. Intramolecular benzene excimer fluorescence lifetime is suppressed by a factor of ten in thin film as compared to diluted solution while conversely the S1 fluorescence lifetime of DBP3 is enhanced in film.

Abstract Image

二苯并菲罗啉薄膜中的苯准分子荧光
采用TCSPC、荧光上转换和瞬态吸收光谱等时间分辨光谱技术研究了13,14-二苯基二苯并[b,j][4,7]菲罗啉(DBP3)薄膜的超快弛豫动力学。在邻菲罗啉和分子内苯准分子的S1态上观察到两条荧光发射带。与稀释溶液相比,薄膜中苯分子内准分子的荧光寿命被抑制了十倍,而相反,DBP3的S1荧光寿命在薄膜中得到增强。
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来源期刊
Chemical Physics Letters
Chemical Physics Letters 化学-物理:原子、分子和化学物理
CiteScore
5.70
自引率
3.60%
发文量
798
审稿时长
33 days
期刊介绍: Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.
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