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Experimental indication of chemical effects in surface enhanced hyper Rayleigh scattering using dye-adsorbed Ag nanoparticles

机译:使用染料吸附的银纳米粒子在表面增强超瑞利散射中化学作用的实验指示

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We report on the observation of chemical effects in surface enhanced hyper Rayleigh scattering (SEHRS), using silver nanoparticles adsorbed with stilbazolium dyes. The experimental results show that the enhancement factors varied with different donor structures of the dyes, which cannot be explained only according to the electromagnetic effect. Using the extinction spectra and surface enhanced Raman scattering spectra (SERS) to provide the complementary results, we deduce that chemical effects also play an important role in SEHRS in addition to the electromagnetic effect. The chemical effects may be related with the Ag-adsorbate charge transfer transition, similar to the mechanism in SERS.
机译:我们报告了在表面增强的超瑞利散射(SEHRS)中使用吸附有stilbazolium染料的银纳米颗粒的化学作用的观察结果。实验结果表明,增强因子随染料给体结构的不同而变化,不能仅根据电磁效应来解释。使用消光光谱和表面增强拉曼散射光谱(SERS)提供互补的结果,我们推论出化学作用在SEHRS中除电磁作用外也起着重要作用。与SERS中的机制相似,化学作用可能与Ag-吸附物的电荷转移转变有关。

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