In situ identification of the adsorption of 4,4′-thiobisbenzenethiol on silver nanoparticles surface: a combined investigation of surface-enhanced Raman scattering and density functional theory study†,10.1039/C2CP24147A

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Lactoyl-CoA 全氟丁基戊烷白叶藤碱全氟己基辛烷新白叶藤碱壳寡糖特色专题-生物多肽

In situ identification of the adsorption of 4,4′-thiobisbenzenethiol on silver nanoparticles surface: a combined investigation of surface-enhanced Raman scattering and density functional theory study†

Ting-ting You,Peng-gang Yin,Li Jiang,Xiu-feng Lang,Lin Guo

Physical Chemistry Chemical Physics Pub Date : 03/26/2012 00:00:00 , DOI:10.1039/C2CP24147A

Abstract

We investigated the configuration characteristic and adsorption behavior of 4,4′-thiobisbenzenethiol (TBBT) on the surface of silver nanoparticles (NPs). Under different conditions and preparation processes, several possible surface species were produced including single-end adsorption on a silicon wafer, double-end adsorption and bridge-like adsorption. Although consisting of the same molecule and nano material, different adsorption systems exhibited different spectral characteristics in the surface-enhanced Raman spectroscopy (SERS). A density functional theory (DFT) study further verified the corresponding adsorption states. The combined SERS-DFT study provided a framework towards investigating and designing adsorption systems at a molecular level, indicating the potential use in applications such as nano-sensors.