In-situ Spectroscopic Studies of Transition Metal Macrocycles as Catalysts for the Electrochemical Reduction of Dioxygen. Annual Report December 1987-November 1988

摘要

The vibrational, electronic, and structural properties of transition metal macrocycles adsorbed on electrode surfaces are being investigated with an array of in situ spectroscopic techniques. They include potential difference Fourier transform infrared spectroscopy, electrochemically modulated infrared spectroscopy, electromodulated reflection absorption spectroscopy in the UV-vis spectral region, Mossbauer spectroscopy in the transmission, and conversion electron modes and X-ray absorption fine structure. The information arising from the use of the techniques is being complemented by conventional electrochemical measurements, and scanning tunneling microscopy as a means of imaging transition metal macrocycles adsorbed on metal surfaces. The studies are aimed at gaining a basic understanding of the factors that control the electrocatalytic activity of transition metal macrocycles adsorbed on electrode surfaces for the electrochemical reduction of dioxygen.