Abstract
The electronic-vibrational spectra of nitrobenzene in the frequency region v ≊50000−30000 cm−1 were investigated. The shape and main parameters of five fundamental absorption bands were determined. The absorption spectrum of ultrathin wall-adjacent orientationally ordered layers (with thicknessd≤100 nm) formed near a lyophilic quartz surface (so called epitropic liquid crystals — ELC) differs essentially from that of a bulk specimen and alters with decreasing thickness. In particular the half width of the intramolecular charge transition band decreased, and a bathochromic shift was observed. Parameters of other bands also change. It is probably connected with existence of ELC phase internal inhomogeneity.
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