CONVENTIONAL AND DYE-LASER OPTICAL-SPECTRA OF ZINC PORPHIN IN ANTHRACENE

Conventional polarized optical absorption spectra and fluorescence spectra of single crystal and polycrystalline samples of zinc porphin in anthracene have been obtained at 4.2 K. Narrow band excitation of fluorescence using a tunable dye laser was used for site selection to eliminate ambiguities due to impurities and multiple sites. The spectra are compared to those of zinc porphin in a different aromatic host (triphenylene) and in n-octane. Some of the vibronic energies are assigned to calculated vibrations of a similar metalloporphin, copper porphin. © 1979.