Tetra- and octa-[4-( thiophen-3-yl)phenoxy]-bearing metal-free and Lu(III) phthalocyanines: synthesis, characterisation and investigation of photophysical properties

Abstract

4-[4-(Thiophen-3-yl)phenoxy] phthalonitrile and 4,5-bis[4-(thiophen-3-yl) phenoxy] phthalonitrile and their corresponding tetra-and octa-substituted metal-free and Lu(III) phthalocyanine derivatives have been synthesised. The aggregation behaviour of the phthalocyanine compounds has been investigated in different solvents and concentrations and the effects of the substituent and the lutetium on their photophysical properties are reported.