Organo-soluble dendritic zinc phthalocyanine: photoluminescence and fluorescence properties

Abstract

ABSTRACT In this study, the spectroscopic measurements of the second generation dendritic zinc phthalo cyanine (phthalocyanine dendrimer with tris) 2 were made and its potential to be used in optoe lectronic applications was investigated. To examine the intramolecular energy transfer properties, fluorescence quantum yields were calculated and the contribution of first (phthalocyanine dendri mer with triethyl methanetricarboxylate) 1 and second 2 generation dendrimers to this energy transfer was investigated. The photoluminescence properties and optical band gap of the second generation zinc phthalocyanine 2 were investigated depending on the temperature. In addition, the quantum efficiency of singlet oxygen was calculated to evaluate the usability of this com pound in photodynamic therapy. Also, aggregation behavior of compound 2 was examined in dif ferent solvents (DMF, DMSO and THF) and different concentrations in THF. To the best of our knowledge, this is the first study to examine the photoluminescence properties and temperature dependent changes of dendritic phthalocyanines.