The effect of plasmonic nanoparticles (NPs) on the fluorescence and phosphorescence intensity of organic dye molecules was studied theoretically and experimentally. A theoretical model that takes into account nonradiative transfer of excitation energy from a molecule to an NP and the changes in the rates of spontaneous emission and light absorption by a molecule near an NP was proposed to calculate the luminescence intensity of a molecule in the presence of a plasmonic NP. Numerical estimates for an erythrosine molecule and a silver NP showed that the greatest increase in luminescence was observed at distances of 4–8 nm between the molecule and the NP surface. Experimentally observed changes in luminescence spectra and shortening of the erythrosine triplet state lifetime in poly(vinyl alcohol) films doped with silver NPs were explained using the proposed model.

从理论上和实验上研究了等离子体纳米粒子（NPs）对有机染料分子荧光和磷光强度的影响。提出了一种理论模型，该模型考虑了从分子到 NP 的激发能量的非辐射转移以及 NP 附近分子的自发发射和光吸收速率的变化，以计算存在以下物质时分子的发光强度：等离子体 NP。对赤藓红分子和银 NP 的数值估计表明，在分子与 NP 表面之间距离 4-8 nm 处观察到发光的最大增加。使用所提出的模型解释了实验观察到的发光光谱的变化和掺杂银纳米粒子的聚乙烯醇薄膜中赤藓红三线态寿命的缩短。