The Dichroic Spectra of Hydroxy Derivatives of Naphthalene, Anthracene, and Phenanthrene in Polyvinylalcohol Sheets

Abstract

Abstract The dichroic spectra of 1,4-dihydroxynaphthalene, 9-hydroxyanthracene, sodium 9,10-dihydroxyanthracene-2-sulfonate, and 9,10-dihydroxyphenanthrene, which were usually unstable in a liquid solution, were measured in stretched polyvinylalcohol sheets. From a comparison of the results of the dichroic spectra with those of the MO calculations, the polarizations of the electronic bands were determined, and the bands were assigned in terms of the relevant bands of the corresponding unsubstituted aromatic compounds.