期刊
JOURNAL OF RAMAN SPECTROSCOPY
卷 40, 期 11, 页码 1557-1563出版社
WILEY
DOI: 10.1002/jrs.2298
关键词
Flavanthrone; Indanthrone; SERS; DFT
类别
资金
- National Institute of Justice [2006-DN-BX-K034]
- City University Collaborative Incentive program [80209]
- National Science Foundation under Cooperative Agreement [RII-9353488, CHE-0091362, CHE-0345987, ECS0217646]
- City University of New York PSC-BHE Faculty Research Award Program.
- National Science Foundation [IMR 0526926]
- National Natural Science Foundation of China [NSFC 20773045, 20627002]
- Programme of Introducing Talent of Discipline to Universities [B06009]
The normal Raman and surface-enhanced Raman scattering (SERS) spectra of flavanthrone and indanthrone were obtained at several excitation wavelengths. The spectral assignments were aided by density functional calculations. Since both molecules have very high symmetry (C-2h) including a center of inversion, we expect that the modes of u symmetry will be forbidden in the normal Raman spectrum. However, proximity to the surface causes special SERS enhancement of several of the b(u) modes, along with somewhat weaker enhancement of the a(u) and b(g) modes. Copyright (C) 2009 John Wiley & Sons, Ltd.
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