Enhanced Raman scattering as a probe for 4-mercaptopyridine surface-modified copper oxide nanocrystals.
We report on the application of Raman scattering as a probe to study 4-mercaptopyridine (4-Mpy) surface-modified CuO nanocrystals. Enhanced Raman scattering from 4-Mpy adsorbed on CuO nanocrystals was observed. The Raman signals displayed 10(2) enhancement compared with those of 4-Mpy in solution. We compared the Raman spectra of 4-Mpy molecules adsorbed on CuO nanocrystals and Ag, Cu substrate. A particular feature of the semiconductor substrate that was different from the metal substrate was revealed. The excitation wavelength-dependent behavior was clearly observed.
Wang
Yanfei
Y
Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun, PR China.
Hu
Hailong
H
Jing
Shengyu
S
Wang
Yunxin
Y
Sun
Zhihua
Z
Zhao
Bing
B
Zhao
Chun
C
Lombardi
John R
JR