The synthesis, spectroscopic and thermal properties of phenoxycyclotriphosphazenyl-substituted phthalocyanines

Novel phthalocyanines with four hexa(phenoxy)cyclotriphosphazene groups, appended through ether linkages were synthesized. Two hexa (phenoxy)cyclotriphosphazene derivatives, a substituted phthalonitrile derivative and metal-free, Ni and Zn phthalocyanines were characterized by elemental analysis, mass spectrometry, IR, H-1, C-13 and P-31 NMR spectroscopies. The synthesis and spectroscopic properties of hexa(phenoxy)cyclotriphosphazenyl-substituted metal-free, Ni and Zn phthalocyanines are reported for the first time; their thermal stability, electronic absorption and fluorescence spectral properties are reported. The phthalocyanines displayed monomeric behaviour in CHCl3; fluorescence quantum yields and lifetimes were determined using DMSO solutions of the compounds. (C) 2008 Elsevier Ltd. All rights reserved.