Fourier transform infrared reflection-absorption spectroscopy of surface species

Abstract We have been able to demonstrate progress in Fourier Transform Infrared Reflection-Absorption Spectroscopy (FT-IRRAS) by incorporating a switching circuit into the data acquisition electronics of an air-equilibrated IBM IR/98 FTIR Spectrometer such that it is possible to obtain simultaneously both reference and polarization modulated spectrum. These spectra ratio to produce good discrimination against gas-phase species. The operating principles of this approach and sample FT-IRRAS spectra of monolayer assemblies of cadmium arachidate adsorbed on silver will be discussed.

[1]  D. Allara,et al.  An infrared reflection spectroscopy study of oriented cadmium arachidate monolayer films on evaporated silver , 1982 .

[2]  R. Greenler.  Infrared Study of Adsorbed Molecules on Metal Surfaces by Reflection Techniques , 1966 .

[3]  P. Chollet.  Determination by infrared absorption of the orientation of molecules in monomolecular layers , 1978 .

[4]  K. B. Blodgett.  Use of Interference to Extinguish Reflection of Light from Glass , 1939 .

[5]  A. Ishitani,et al.  X-ray photoelectron spectra and Fourier transform infrared spectra of mono- and multilayer films of cadmium arachidate , 1978 .

[6]  Irving Langmuir,et al.  Pilgrim Trust Lecture, Molecular layers , 1939 .

[7]  A. Ortega,et al.  High resolution vibrational spectroscopy of CO on Ru(001): The importance of lateral interactions , 1980 .

[8]  D. S. Dunn,et al.  A method for measuring infrared reflection—Absorption spectra of molecules adsorbed on low-area surfaces at monolayer and submonolayer concentrations , 1981 .

[9]  R. Greenler.  Reflection Method for Obtaining the Infrared Spectrum of a Thin Layer on a Metal Surface , 1969 .

[10]  W. Knoll,et al.  Surface infrared and surface enhanced Raman vibrational spectra of monolayer assemblies in contact with rough metal surfaces , 1982 .

[11]  I. Chabay,et al.  Infrared circular dichroism and linear dichroism spectrophotometer. , 1975, Applied optics.

[12]  D. W. Vidrine,et al.  Fourier transform infrared vibrational circular dichroism , 1979 .

[13]  A. Ortega,et al.  The adsorption of CO on Pd(100) studied by IR reflection absorption spectroscopy , 1982 .

[14]  M. Kawai,et al.  Oxidation of CO on a Pd surface: application of IR-RAS to the study of the steady state surface reaction , 1981 .

[15]  M. Diem,et al.  Theory of High Frequency Differential Interferometry: Application to the Measurement of Infrared Circular and Linear Dichroism via Fourier Transform Spectroscopy , 1979 .

[16]  D. King,et al.  Infrared spectra for co isotopes chemisorbed on Pt “111”: Evidence for strong absorbate coupling interactions , 1977 .

[17]  J. Campuzano,et al.  The adsorption sites of CO on Ni(111) as determined by infrared reflection-absorption spectroscopy , 1979 .

[18]  A. Ellison,et al.  Infrared Spectra of Monolayers on Metal Mirrors , 1959 .