Surface-enhanced Raman scattering on mercaptopyridine-capped CdS microclusters.
We obtained the high-quality Raman spectra of 4-mercaptopyridine (4-Mpy) adsorbed on CdS microclusters. The Raman signals were enhanced relative to the same molecules in solution. We compared the Raman spectra of 4-Mpy molecules adsorbed on CdS microclusters and Ag substrate. The difference of 4-Mpy molecules adsorbed on semiconductor and metal substrate was revealed. The results demonstrated that adsorbed species on semiconductor CdS can be detected by SERS spectroscopy.
Wang
Yanfei
Y
Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, 2699 Qianjin Avenue, Changchun 130012, PR China.
Sun
Zhihua
Z
Wang
Yunxin
Y
Hu
Hailong
H
Zhao
Bing
B
Xu
Weiqing
W
Lombardi
John R
JR
D008855:Microscopy, Electron, Scanning; D011725:Pyridines / Q000737:chemistry*; D012542:Scattering, Radiation; D012666:Semiconductors; D013059:Spectrum Analysis, Raman
D011725:Pyridines; C042861:4-thiopyridine