Chemical mechanism of surface-enhanced resonance Raman scattering via charge transfer in pyridine-Ag-2 complex
文献类型：期刊论文
| 作者 | Sun, MT ; Wan, BS ; Liu, YJ ; Jia, Y ; Xu, HX |
| 刊名 | JOURNAL OF RAMAN SPECTROSCOPY
 |
| 出版日期 | 2008 |
| 卷号 | 39期号:3页码:402 |
| ISSN号 | 0377-0486 |
| 中文摘要 | A theoretical model is presented to describe the chemical mechanism of surface-enhanced resonance Raman scattering (SERRS) via charge transfer (CT) in the pyridine-Ag-2 complex. We first describe the influence of the interaction between the metal cluster and pyridine to the ground-state properties of the pyridine-Ag-2 complex, such as charge redistribution, the change of the atomic-resolved density of state, and the change of energy levels of occupied and unoccupied molecular orbitals. Second, we visualize the CT between the metal cluster and pyridine and within the intracluster on the electronic state transitions with charge difference density. The CT between the metal cluster and pyridine is the direct evidence of chemical mechanism for SERRS. Third, the spectra of SERRS are calculated with different incident light wavelengths that resonate with the different electronic state energy levels, and the enhanced intensities of different vibrational modes are compared, which show that there are different enhancement rates for different vibrational modes. Strong Raman scattering can be achieved not only by the CT between pyridine and the metal cluster but also by electronic intracluster excitation via a type of Forster excitation transfer, and the latter results from the local field effects by collective plasmons. The selection rules for the SERRS have been obtained for these two types of enhanced mechanisms. Copyright (C) 2008 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34717]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Sun, MT,Wan, BS,Liu, YJ,et al. Chemical mechanism of surface-enhanced resonance Raman scattering via charge transfer in pyridine-Ag-2 complex[J]. JOURNAL OF RAMAN SPECTROSCOPY,2008,39(3):402. |
| APA | Sun, MT,Wan, BS,Liu, YJ,Jia, Y,&Xu, HX.(2008).Chemical mechanism of surface-enhanced resonance Raman scattering via charge transfer in pyridine-Ag-2 complex.JOURNAL OF RAMAN SPECTROSCOPY,39(3),402. |
| MLA | Sun, MT,et al."Chemical mechanism of surface-enhanced resonance Raman scattering via charge transfer in pyridine-Ag-2 complex".JOURNAL OF RAMAN SPECTROSCOPY 39.3(2008):402. |
入库方式： OAI收割
来源：物理研究所
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