物理化学学报2017，Vol.33Issue(11)：2199-2206,8.DOI:10.3866/PKU.WHXB201705226
Au纳米粒子表面附近偶氮苯分子的吸收光谱
Absorption Spectra of Azobenzene Molecules on Au Nanoparticle Surface
摘要
Abstract
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.关键词
偶氮苯分子/金属纳米粒子/等离子基元/吸收光谱Key words
Azobenzene/Metallic nanoparticle/Plasmon/Absorption spectrum分类
化学化工引用本文复制引用
孙进,丁宗玲,喻远琴,李广..Au纳米粒子表面附近偶氮苯分子的吸收光谱[J].物理化学学报,2017,33(11):2199-2206,8.基金项目
The project was supported by the National Natural Science Foundation of China (21103001) and Natural science Research Project of Anhui Higher Education,China (KJ2017A033).国家自然科学基金(21103001)和安徽省高等学校自然科学研究项目(KJ2017A033)资助项目 （21103001）
