Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea.
Nanoscale. 2014 May 21;6(10):4966-84. doi: 10.1039/c4nr00241e.
The interaction between light and matter is the fundamental aspect of many optoelectronic applications. The efficiency of such devices is mainly dictated by the light emitting properties of fluorophores. Unfortunately, the intensity of emission is adversely affected by surface defects, scattering and chemical instability. Therefore, enhancing the luminescence of fluorophores is necessary for better implementation of nanocomposites in biological and optical applications. There are many interesting phenomena which can be observed if the characteristics of the fluorophores and metal nanoparticles are integrated. Photoluminescence (PL) by fluorophores can be enhanced or quenched by the presence of neighboring plasmonic metal nanostructures. An unambiguous study of the mechanism behind the enhancement and the quenching of emission is necessary to obtain new insight into the interactions between light and metal-fluorophore nanocomposites. In this review the core aspect of combining plasmonic metal nanostructures with fluorophores is discussed by considering various functional roles of plasmonic metals in modifying the PL properties reported by various research groups. A few representative applications of SPR mediated luminescence are also discussed.
光与物质的相互作用是许多光电应用的基础。这些器件的效率主要取决于荧光团的发光特性。不幸的是，发射强度会受到表面缺陷、散射和化学不稳定性的不利影响。因此，为了更好地将纳米复合材料应用于生物和光学领域，增强荧光团的发光性能是必要的。如果将荧光团和金属纳米粒子的特性集成在一起，就可以观察到许多有趣的现象。荧光团的光致发光（PL）可以通过相邻的等离子体金属纳米结构的存在而增强或猝灭。为了深入了解光与金属-荧光团纳米复合材料之间的相互作用，需要对增强和猝灭发射的机制进行明确的研究。在这篇综述中，通过考虑等离子体金属在各种研究小组所报道的 PL 性质的修饰中所起的各种功能作用，讨论了将等离子体金属纳米结构与荧光团结合的核心方面。还讨论了一些代表 SPR 介导发光的应用。
