DOU Wen-hu1,2, HE Qiang1*, ZHOU Guang-ming2, KANG Qian-qian2, YANG Yuan-gao2, CHEN Jun2
1. Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China 2. Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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.
Key words：SERS;IR;Nanocomposite material;DFT;Sudan red Ⅲ;Sudan red Ⅳ
窦文虎1, 2，何 强1*，周光明2，康倩倩2，杨远高2，陈 君2 . 苏丹红Ⅲ与苏丹红Ⅳ的红外、拉曼光谱和密度泛函理论的研究 [J]. 光谱学与光谱分析, 2012, 32(12): 3247-3252.
DOU Wen-hu1,2, HE Qiang1*, ZHOU Guang-ming2, KANG Qian-qian2, YANG Yuan-gao2, CHEN Jun2 . IR, Raman and DFT Studies of Sudan Red Ⅲ and Ⅳ . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(12): 3247-3252.
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