Synthesis, characterization, photophysical and photochemical properties of tetra-2-[2-(benzothiazolylthio)]ethoxy substituted phthalocyanine derivatives

Abstract

The metal-free and zinc (II) phthalocyanine compounds tetra substituted with 2-(2-benzothiazolylthio) ethoxy groups have been synthesized for the first time in this study for comparison central metal effect on photophysical and photochemical properties. The new compounds have been characterized by IR, H-1 NMR, C-13 NMR and MS spectra data. These compounds showed excellent solubility in most common organic solvents. The photophysical and photochemical properties of metal-free and zinc (II) phthalocyanine compounds have been studied in DMF and toluene in order to investigate of polar and non-polar solvent effect on these properties. The fluorescence quenching behaviour of the studied compounds by 1,4-benzoquinone (BQ) have also been studied in DMF and toluene. (C) 2012 Elsevier B. V. All rights reserved.