title: [IR, Raman and DFT studies of Sudan red III and IV].
abstract: Infrared spectroscopy (IR) and normal Raman spectroscopy (NRS) of Sudan red(III) and Sudan red(IV), and surface -enhanced Raman spectroscopy(SERS) of them on Cu-Ag nanocomposite material were reported in the present paper. The density functional theory (DFT) calculation was applied to calculate IR and NRS on a B3LYP/6-311+G (d, p) level, and the theoretically calculated spectra were carefully compared with the obtained experimental spectra. The vibrational peaks were assigned by the software of Gauss view 5.0. Rapid identification of Sudan red was realized, which provided profitable basis for characteristics and quick test of Sudan dyes, and reliable detection method of food security.
authors: Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China. 413593347@qq.com
authors: Wen-Hu
authors: WH
authors: Dou
authors: Qiang
authors: Q
authors: He
authors: Guang-Ming
authors: GM
authors: Zhou
authors: Qian-Qian
authors: QQ
authors: Kang
authors: Yuan-Gao
authors: YG
authors: Yang
authors: Jun
authors: J
authors: Chen