Photon-driven charge transfer and photocatalysis of p-aminothiophenol in metal nanogaps: a DFT study of SERS.
When p-aminothiophenol (PATP) is used as a probe molecule and adsorbs on silver and gold nanogaps, a significant change of relative SERS intensities can be observed. Our DFT calculations show that surface photocatalytic coupling reactions yield a new surface species of p,p'-dimercaptoazobenzene (DMAB) causing the significant change in the SERS spectra.
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, China. dywu@xmu.edu.cn
De-Yin
DY
Wu
Liu-Bin
LB
Zhao
Xiu-Min
XM
Liu
Rong
R
Huang
Yi-Fan
YF
Huang
Bin
B
Ren
Zhong-Qun
ZQ
Tian
D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis; D006046:Gold / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology; D017785:Photons; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D013499:Surface Properties
D001391:Azo Compounds; D012834:Silver; D006046:Gold; C009850:azobenzene