电纺发光纤维中受激发射与荧光共振能量转移的相互作用
Interplay of Stimulated Emission and Fluorescence Resonance Energy Transfer in Electrospun Light-Emitting Fibers
摘要：
研究了电纺发光光纤中的伴随放大自发发射（ASE）和Förster共振能量转移（FRET）。当用适当的FRET偶联系统掺杂染料时，独立式纤维垫表现出可调的FRET效率，更重要的是，表现出可定制的受激发射阈值条件。此外，通过相干后向散射实验测量光子的传输平均自由程，在纤维材料中发现了光的有效光的散射。ASE和FRET的相互作用导致在设计电纺纤维的光学性质时的高度控制，包括来自供体和受体组分的同时受激发射的发生。所有可调光学性质是非常有趣的，鉴于应用电纺发光材料在照明，显示和传感技术。
英文摘要：
Concomitant amplified spontaneous emission (ASE) and Förster resonance energy transfer (FRET) are investigated in electrospun light-emitting fibers. Upon dye-doping with a proper FRET couple system, free-standing fibrous mats exhibit tunable FRET efficiency and, more importantly, tailorable threshold conditions for stimulated emission. In addition, effective scattering of light is found in the fibrous material by measuring the transport mean free path of photons by coherent backscattering experiments. The interplay of ASE and FRET leads to high control in designing optical properties from electrospun fibers, including the occurrence of simultaneous stimulated emission from both donor and acceptor components. All tunable-optical properties are highly interesting in view of applying electrospun light-emitting materials in lightening, display, and sensing technologies.
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