Surface-enhanced near-infrared Raman spectroscopy of nicotinamide   adenine dinucleotides on a gold electrode

doi:10.1016/S0022-0728(97)00147-2

CORC > 北京大学 > 化学与分子工程学院

	Surface-enhanced near-infrared Raman spectroscopy of nicotinamide adenine dinucleotides on a gold electrode
	Xiao, YJ ; Wang, T ; Wang, XQ ; Gao, XX
刊名	journal of electroanalytical chemistry
	1997
关键词	spectroelectrochemistry near-infrared Raman spectroscopy NAD SERS SILVER ELECTRODE ELECTROCHEMICAL REDUCTION DIFFERENCE TECHNIQUES NAD+ SCATTERING BEHAVIOR PYRIDINE SPECTRA ADSORPTION MOLECULES
DOI	10.1016/S0022-0728(97)00147-2
英文摘要	Near-infrared Fourier transform Raman spectroscopy was used to study the surface-enhanced Raman spectroscopy (SERS) behavior of nicotinamide adenine dinucleotide (NAD) on a gold electrode. It was found that the quality of SERS can be largely improved by using a near-infrared laser as the exciting source. Many bands, which cannot be enhanced in conventional SERS excited by visible light, can be observed clearly in FT-SERS. The potential, pH, and concentration dependence of the SERS revealed that NAD adsorbed on a gold electrode can be opened to a certain extent. Either the adenine or the nicotinamide moiety may change their adsorption states during the potential scanning process. The FT-SERS of NAD exhibits quite different properties from conventional SERS in two aspects: (1) the spectrum is quite dependent on applied voltages not only in peak intensities, but also in band positions; in visible excited SERS, NAD and its analogues showed no potential dependence or only manifested changes in peak intensities; (2) a small peak coupled with the ring breathing vibration band of the nicotinamide moiety appeared and increased with a negative shift of the potential. In contrast, only a single peak for this mode appeared in visible excited SERS. In addition, a very interesting phenomenon was observed in that a group of new bands appeared in the positive potential region which are similar to those with NAD binding a dehydrogenase enzyme. These results imply strongly that a charged and roughened electrode may be useful as an artificial enzyme model. (C) 1997 Elsevier Science S.A.; Chemistry, Analytical; Electrochemistry; SCI(E); EI; 14; ARTICLE; 1-2; 49-56; 433
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151681]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Xiao, YJ,Wang, T,Wang, XQ,et al. Surface-enhanced near-infrared Raman spectroscopy of nicotinamide adenine dinucleotides on a gold electrode[J]. journal of electroanalytical chemistry,1997.
APA	Xiao, YJ,Wang, T,Wang, XQ,&Gao, XX.(1997).Surface-enhanced near-infrared Raman spectroscopy of nicotinamide adenine dinucleotides on a gold electrode.journal of electroanalytical chemistry.
MLA	Xiao, YJ,et al."Surface-enhanced near-infrared Raman spectroscopy of nicotinamide adenine dinucleotides on a gold electrode".journal of electroanalytical chemistry (1997).