ENHANCED INFRARED SPECTRA OF AZOBENZENE CARBOXYLIC ACID LB MONOLAYER OIL DISCONTINUOUS SILVER FILM

摘要

Enhanced infrared spectra of a Langmuir-Blodgett (LB) monolayer of C(8)AzoC(3)COOH on silver-coated CaF2 substrates are reported, in which much larger enhancement for the COOK groups residing in the gap between silver islands than the COO- groups on silver islands are observed. The enhancement factor for the nu(C=O) mode of COOH was estimated to be a value much larger than 150. The data clearly show the collective electron resonance mechanism of the surface enhanced infrared spectroscopy (SEIRS). (C) 1997 Elsevier Science B.V. [References: 17]