Abstract: The effects of interchromophore interaction on the energy levels of two different polyacene chromophores (anthracene and naphthalene) have been determined. Two new coupled-chromophore compounds were used for the study, 1, 2, 3, 4-tetra-hydro-[2.3](9, 10)- anthracenophane (V) and 1-(9-anthry1)-3-(1', 2', 3', 4'-tetrahydro-9'-anthryl) propane (111). Polarized absorption spectra of V and 111, the latter obtained in a face-to-face ...