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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：中科院大连化学物理研究所
学位：博士
所在单位：物理学院
学科：原子与分子物理. 光学
电子邮箱：mdchen@dlut.edu.cn
Theoretical study on SERRS of rhodamine 6G adsorbed on Ag-2 cluster: chemical mechanism via intermolecular or intramolecular charge transfer
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论文类型：期刊论文
发表时间：2008-09-01
发表刊物：JOURNAL OF RAMAN SPECTROSCOPY
收录刊物：SCIE、Scopus
卷号：39
期号：9
页面范围：1170-1177
ISSN号：0377-0486
关键字：charge difference density; chemical mechanism via charge transfer; R6G; R6G-Ag-2 complex; SERRS
摘要：The problem of the chemical enhancement of rhodamine 6G (R6G) adsorbed on silver cluster has been theoretically investigated by charge difference densities (CDDs) to show the direct charge transfer (CT) evidence. For surface-enhanced resonance Raman scattering (SERRS) of R6G excited at 514.5 nm, the enhancements of v(151) and v(154) result from weak intermolecular (from Ag to R6G) CT and the strong intramolecular CT [similar to that of resonance Raman scattering (RRS) of R6G], respectively. The possibility of the SERRS of R6G contributed from pure intermolecular CT is also discussed, when the incident light is close to the new metal-R6G CT excited state at 1571.4 nm. Meanwhile compared with the absorption process the fluorescence yield of R6G is investigated by transition densities and CCDs. Copyright (c) 2008 John Wiley & Sons, Ltd.