121st General Meeting of the KCS

Type Poster Presentation
Area Physical Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code PHYS.P-167
Subject Surface-induced photoreaction of 4-aminobenzonitrile and 4-nitrobenzonitrile on silver surface: SERS and DFT study
Authors Do Geun Yoon, Sang Eun Kim, Hong Lae Kim, Chan Ho Kwon*
Department of Chemistry, Kangwon National University, Korea
Abstract We investigated the surface-induced photoreaction of 4-aminobenzonitrile (4ABN) and 4-nitrobenzonitrile (4NBN) on silver surface, which have been paid much attention and still disputed. We obtained the SERS spectrum of the 4ABN and 4NBN which never correlate to the OR spectra of the 4ABN and 4NBN, respectively. The SERS spectra of the 4ABN and 4NBN commonly have the new peaks at 1100 and 1400 cm-1, which were found in case of the 4-aminobenzene thiol. Analyzing the measured spectra with the aid of the DFT calculation, we found that the both SERS spectra of the 4ABN and 4NBN resemble the SERS spectrum of the azobenzene-4,4'-dicyano. In addition, we observed that the dimerization took place by irradiation of the laser light and those reactions were completed within a few seconds. Finally, we suggest that the 4ABN and 4NBN change to azobenzene-4,4'-dicyano by surface-induced photoreaction on silver surface.
E-mail puri102@nate.com