Tunable Fluorescence Emission and Efficient Energy Transfer in Doped Organic Nanoparticles

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• 作者：Xiuping Li ; Yan Qian ; Shuangqing Wang ; Shayu Li* ; Guoqiang Yang*
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：March 5, 2009
• 年：2009
• 卷：113
• 期：9
• 页码：3862-3868
• 全文大小：285K
• 年卷期：v.113,no.9(March 5, 2009)
• ISSN：1932-7455

文摘

Luminescent organic nanoparticles consisting of a green-emitting ESIPT compound DHBIA doped with a red-emitting dye MAFN have been prepared by the reprecipitation method. It was found that emission of nanoparticles can be tuned gradually from green to red by increasing doping levels. These nanoparticles could be analyzed as a system of densely packed chromophores that showed efficient energy transfer from DHBIA to MAFN. The energy transfer in these systems was assigned to the Frster resonance mechanism. A simple model was modified and used to analyze quantitatively this energy transfer behavior in doped nanoparticles. The bathochromic of guest emission was presumably due to solid state solvation effects (SSSE).