期刊
VIBRATIONAL SPECTROSCOPY
卷 48, 期 2, 页码 210-214出版社
ELSEVIER
DOI: 10.1016/j.vibspec.2008.01.001
关键词
para-Nitro-aniline; Raman; SERS; DFT
Raman spectra of para-nitro-aniline (pNA). a molecule with high applicability potential in molecular electronics, were recorded in solid state and in ethanol solution. Complete assignment of the experimental spectra was made by using the B3LYP/6-31G(d) theoretical results. The calculated molecular electrostatic potential shows a high negative charge localized on the nitro group of pNA and the surface-enhanced Raman scattering (SERS) spectrum of pNA adsorbed to colloidal silver particles denote the molecule interaction with the silver surface mainly through the nitro group. However, theoretical results obtained by modeling the pNA-4Ag complex also suggest the adsorption of pNA through the amino group or a flattened orientation of pNA with respect to the silver surface. (C) 2008 Elsevier B.V. All rights reserved.
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