科研之友
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摘要
In this paper, a real-time time-dependent density functional theory (TDDFT) coupled with the classical electrodynamics finite difference time domain (FDTD) technique is employed to investigate the optical properties of hybrid systems composed of gold nanoparticles (NPs) and the azobenzene adsorbate. The results demonstrate that the molecular absorption spectra over the entire energy range can be enhanced by localized surface plasmon resonance (LSPR) of Au NPs. However, the electronic coupling between the azobenzene and Au nanoparticles influences the energy and intensity of some special absorption peaks, leading to quite different spectral profiles of the hybrid complexes compared to those of isolated molecules or sole NPs. The plasmonic enhancement is also dependent on the NP-molecule separation distance and the geometrical parameters of NPs.
- 出版日期2017-8-25
- 单位安徽大学
