Optical data memories comprising cobalt phtalocyanin with an axial substituent and axial ligand in an information photoinscribtible layer

摘要

Its information layer comprises the optical data carrier of at least a light-absorbing compound, and described light-absorbing compound is phthalocyanine Co (III), and wherein the Co metal center has axial substituent R ¹With axial coordination part R ², R ¹Be CN, SCN, halogen (especially Cl, Br or F), alkoxyl group, aryloxy, arylthio or alkylthio, R ²Be no part or replacement or unsubstituted amine, water, alcohol, H ₂S, mercaptan or isonitrile.