title: Substrate-, wavelength-, and time-dependent plasmon-assisted surface catalysis reaction of 4-nitrobenzenethiol dimerizing to p,p'-dimercaptoazobenzene on Au, Ag, and Cu films.
abstract: In this article, we experimentally investigate the substrate, wavelength, and time dependence of the plasmon-assisted surface-catalyzed dimerization of 4-nitrobenzenethiol to form p,p'-dimercaptoazobenzene on Au, Ag, and Cu films. We provide direct experimental evidence that surface plasmon resonance plays the most important role in these surface-catalyzed reactions. It is found that the reaction is strongly dependent on the substrate, the wavelength of the laser, and the reaction timescales. Our experimental results revealed that optimal experimental conditions can be rationally chosen to control (accelerate or restrain) this reaction. The experimental results are also confirmed by theoretical calculations.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603-146, Beijing 100190, PR China.
authors.forename: Bin
authors.initials: B
authors.lastname: Dong
authors.forename: Yurui
authors.initials: Y
authors.lastname: Fang
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Chen
authors.forename: Hongxing
authors.initials: H
authors.lastname: Xu
authors.forename: Mengtao
authors.initials: M
authors.lastname: Sun
mesh_terms: D002384:Catalysis; D003300:Copper / Q000737:chemistry; D019281:Dimerization; D006046:Gold / Q000737:chemistry; D008567:Membranes, Artificial; D015394:Molecular Structure; D010316:Particle Size; D012834:Silver / Q000737:chemistry; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D020349:Surface Plasmon Resonance; D013499:Surface Properties; D013997:Time Factors
chemical_list: D008567:Membranes, Artificial; D013438:Sulfhydryl Compounds; C568766:p,p'-dimercaptoazobenzene; C014712:4-nitrothiophenolate; D012834:Silver; D006046:Gold; D003300:Copper