SYNTHESIS OF SOLUBLE METAL PHTHALOCYANINE DERIVATIVES AND THEIR ELECTRON-TRANSFER PROPERTIES

Metal phthalocyanine derivatives exhibit high electron transfer abilit ies, although they are insoluble in most common organic solvents, whic h has inhibited them from being employed in functional colorants that can take advantage of their useful electron transfer properties. Solub le metal phthalocyanine derivatives, metal octakis(hexoxymethyl)phthal ocyanines, and a new type of phthalocyanine derivative, metal anthraqu inocyanines, have been synthesised in this study. The electron transfe r behaviour of the phthalocyanines and anthraquinocyanines, were exami ned with cyclic voltammetry. This showed one irreversible oxidation an d one pair of reduction potentials. Cyclic voltammograms of metal anth raquinocyanines exhibited the irreversible redox behaviour. The electr on transfer properties of metal phthalocyanine derivatives were influe nced by the ring current of pi electrons about the conjugated system. Ring currents of metal phthalocyanine derivatives consisted of five lo ops, whereas those for metal anthraquinocyanines were made up of a sim ple loop.