Light-Emitting Polymer Single Nanofibers via Waveguiding Excitation
Light-Emitting Polymer Single Nanofibers via Waveguiding Excitation
复制标题
通过波导激发的发光聚合物单纳米纤维
DOI：
10.1021/nn100775v
复制
发表时间：
2010-09-01
期刊：
影响因子：
17.1
通讯作者：
Tong, Limin
中科院分区：
文献类型：
--
作者：
Gu, Fuxing;Yu, Huakang;Tong, Limin
我们报告了一种基于波导激发的发光聚合物纳米纤维（PNF）的一般方法。通过沿着PNF波导激发光，我们证明了光与PNF的相互作用与目前使用的照射激发相比增强了3个数量级以上。有趣的优点，如增强的激发效率，低激发功率操作下降到nW的水平，紧密限制的激发低串扰，和高的光稳定性的发光PNF获得。波导激发允许将各种荧光染料并入PNF中以产生覆盖整个可见光谱的荧光发射源。通过波导激发的发光单光子光纤可以在化学和生物传感器、光发射源和激光器中找到广泛的纳米光子应用。
We report a general approach to light-emitting polymer nanofibers (PNFs) based on waveguiding excitation. By waveguiding excitation light along the PNFs, we demonstrated that the interaction of light with PNFs is enhanced over 3 orders of magnitude compared with the currently used irradiating excitation. Intriguing advantages such as enhanced excitation efficiency, low excitation power operation down to nW levels, tightly confined excitation with low cross talk, and high photostability of the light-emitting PNFs are obtained. The waveguiding excitation allows incorporation of various fluorescent dyes into PNFs to generate multicolor emitting sources covering the entire visible spectrum. The light-emitting single PNFs via waveguiding excitation may find widespread nanophotonic applications in chemical and biological sensors, multicolor emitting sources, and lasers.