Determination of the electric field intensities in a mid-infrared spectroelectrochemical cell using attenuated total reflection spectroscopy with theOtto optical configuration
Pa. Brooksby et Wr. Fawcett, Determination of the electric field intensities in a mid-infrared spectroelectrochemical cell using attenuated total reflection spectroscopy with theOtto optical configuration, ANALYT CHEM, 73(6), 2001, pp. 1155-1160
The normalized mean-squared electric field intensities in a thin-layer spec
troelectrochemical cell with the attenuated total reflection (ATR) optical
configuration have been determined and are compared with those for the over
layer-ATR and normal ATR methods. The components of the system were ZnSe or
Ge hemispherical internal reflection elements, a An metal electrode, and w
ater. The calculations were performed for two different values of the molar
absorption coefficient for water, namely, k = 0.133 (at 1635 cm(-1)) and k
= 0.010 (at 1885 cm(-1)). It was determined that the electric field enhanc
ements in the overlayer-ATR cell can also be found in the thin-layer TL) AT
R cell. This is important in that the TL-ATR cell allows greater control ov
er the surface properties of the chosen electrode material.