Absorption, photoluminescence and polarized Raman spectra of the four-fold alkoxy-substituted phthalocyanine H2 Pc-(CO14,10)4
Elisabetta Venuti, Raffaele Guido Della Valle, Ivano Bilotti, Aldo Brillante, Massimiliano Cavallini, Annalisa Calo, Yves H. Geerts, Washington (2011)
ABSTRACT: Absorption, photoluminescence, and Raman scattering measurements have been performed on a fourfold alkoxysubstituted phthalocyanine in solution and in the discotic liquid crystal phase. As already known for this class of compounds, the features of the electronic spectra in the condensed state are determined by the spatial closeness and arrangement of the π systems of the phthalocyanine cores, with the occurrence of collectively excited states and excimer-like emission. Quantitative information about the alignment of the molecules which compose the liquid crystal phase has been obtained from the analysis of polarized Raman spectra of homeotropically aligned samples.
Partners : UNIBO CNR ULB
Place of Publication : Washington
Date of Publication : 2011/05/27
Additional Data : J. Phys. Chem. C 2011, 115, 12150–12157