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Citation: Liu Tian-Jun, Wu Shi-Kang. Study on the Excimer Fluorescence Behavior of α、ω-Biscoumarin Long Chain Compounds[J]. Acta Physico-Chimica Sinica, ;1996, 12(08): 677-683. doi: 10.3866/PKU.WHXB19960802 shu

Study on the Excimer Fluorescence Behavior of α、ω-Biscoumarin Long Chain Compounds

1.
Institute of Photographic Chemistry,Academia Sinica,Beijing 100101

Received Date: 9 October 1995
Available Online: 15 August 1996

The fluorescence behavior of coumarin excimer formed form the excited α, ω-biscoumarin long chain compounds in different conditions has been investigated in this paper. The fluorescence spectra show its emission maximum wave-length at 450nm in aqueous solution, and the single photon counting technique indicates its lifetime around 5.0ns. The 1H NMR spectra demonstrate the reason of the excimer formation to be the hydrophobic interaction which enhances the intramolecular aggregation of coumarin located at the terminal of molecule.
- Coumarin,
- Long chain compound,
- Excimer
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