Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, PR China; Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
Talanta. 2019 Apr 1;195:752-756. doi: 10.1016/j.talanta.2018.11.112. Epub 2018 Nov 30.
The enhancement of surface plasmon-coupled emission (SPCE) by the synergistic effect of silver nanocubes (AgNCs) and graphene oxide (GO) on gold film has been observed with the enhancement factor over 30. The enhancement mechanisms were investigated through simulating the electromagnetic (EM) field patterns of near field and testing different concentration of AgNCs and thickness of dye layer. The enhancement was mainly triggered by the high electromagnetic field of AgNCs, the interaction between localized surface plasmons (LSP) and propagating surface plasmons (PSP) and the assistance of GO. This synergistic enhancement strategy provides a simple way to increase SPCE signal and enable develop a new fluorescence-based detection system.
已经观察到银纳米立方体 (AgNCs) 和氧化石墨烯 (GO) 在金膜上的协同效应增强了表面等离激元耦合发射 (SPCE)，增强因子超过 30。通过模拟近场的电磁场模式和测试不同浓度的 AgNCs 和染料层厚度，研究了增强机制。增强主要是由 AgNCs 的强电磁场、局域表面等离激元 (LSP) 和传播表面等离激元 (PSP) 之间的相互作用以及 GO 的辅助作用触发的。这种协同增强策略为增加 SPCE 信号提供了一种简单的方法，并能够开发一种新的基于荧光的检测系统。
