OPTICAL DATA STORES COMPRISING A CO PHTHALOCYANINE HAVING AN AXIAL SUBSTITUENT AND AN AXIAL LIGAND IN THE LIGHT-WRITABLE INFORMATION LAYER

摘要

Optical data carriers whose information layer comprises at least one light-absorbent compound which is a Co(III) phthalocyanine in which the Co metal centre bears an axial substituent R1 and an axial coordinated ligand R2, where R1 is CN, SCN, halogen, in particular Cl, Br or F, alkoxy, aryloxy, arylthio or alkylthio and R2 is no ligand or substituted or unsubstiruted amine, water, an alcohol, H2S, a thioalcohol or an isonitrile.