화학공학소재연구정보센터
Journal of the Electrochemical Society, Vol.150, No.4, E233-E236, 2003
Adsorption of pyridine on Au(110) as measured by reflection anisotropy spectroscopy
The reflection anisotropy spectra of pyridine adsorbed onto a Au(110) surface in an electrochemical cell demonstrates that this system forms an ordered structure. The reflection anisotropy spectroscopy (RAS) of pyridine/Au(110) is attributed to n - pi* transitions which are shifted from their position in gas-phase spectra by the effects of the interaction of the N lone pair orbitals with the Au(110) surface. The time dependence of the reflection anisotropy spectrum of the pyridine/Au(110) system shows that after the initial onset of pyridine adsorption it takes similar to5 min for the system to yield the spectrum of the equilibrium ordered structure. A similar time is required for the RAS signal to return to that of the Au(110) surface following the desorption of pyridine. (C) 2003 The Electrochemical Society.