Optical data stores containing a Co-phthalocyanine complex in the information layer recordable using light

An optical data store containing an information layer that is recordable using light, wherein the information layer comprises at least one light-absorbing Co-phthalocyanine complex of the formula (I)

• in which
• CoPc represents cobalt(III) phthalocyanine,
• L1 and L2 are axial, coordinately bonded ligands of the cobalt central atom and represent an amine of the formula NR0R1R2 or represent an isonitrile of the formula
• in which
• R0, R1, and R2 independently of one another, represent hydrogen, alkyl, cycloalkyl, alkenyl, aryl, or hetaryl or two of the radicals R0 to R2, together with the N atom to which they are bonded, form a hydrogenated, partly hydrogenated, quasiaromatic, or aromatic ring that optionally contains further heteroatoms,
• R represents alkyl, cycloalkyl, alkenyl, aryl, or hetaryl, and
• R3, R4, R5, and R6 are substituents of phthalocyanine and, independently of one another, represent halogen, cyano, alkyl, aryl, alkylamino, dialkylamino, alkoxy, aryloxy, arylthio, alkylthio, SO3H, SO2NR7R8, CO2R12, CONR7R8, NH—COR12, or a radical —(B)m—D in which
• B denotes a bridge member from the group consisting of a direct bond, CH2, CO, CH(alkyl), C(alkyl)2, NH, S, O, or —CH═CH—, such that (B)m denotes a chemically expedient combination of bridge members B where m is 1 to 10,
• D represents the monovalent radical of a redox system of the formula
• or
• or represents a metallocenyl radical or metallocenylcarbonyl radical in which titanium, manganese, iron, ruthenium, or osmium is suitable as a metal center, in which
• X1 and X2, independently of one another, represent NR′R″, OR″, or SR″,
• Y1 represents NR′, O, or S,
• Y2 represents NR′,
• n represents 1 to 10, and
• R′ and R″, independently of one another, represent hydrogen, alkyl, cycloalkyl, aryl, or hetaryl, or form a direct bond or a bridge to one of the C atoms of the
• chain,
• w, x, y, and z, independently of one another, represent 0 to 12 and
• w+x+y+z are 12,
• R7 and R8, independently of one another, represent alkylamino, hydroxyalkylamino, dialkylamino, bishydroxyalkylamino, or arylamino, or R7 and R8, together with the N atom to which they are bonded, form a heterocyclic 5-, 6-, or 7-membered ring, optionally with participation of further heteroatoms,
• R12 represents alkyl, aryl, hetaryl, or hydrogen, and
• An− represents an anion.

A compound of the formula (Ic)

• in which
• CoPc represents cobalt(III) phthalocyanine,
• R7 and R8, independently of one another, represent alkylamino, hydroxyalkylamino, dialkylamino, bishydroxyalkylamino, or arylamino, or R7 and R8, together with the N atom to which they are bonded, form a heterocyclic 5-, 6-, or 7-membered ring, optionally with participation of further heteroatoms,
• halogen represents chlorine, bromine, or fluorine,
• alkoxy represents C1-C6-alkoxy that is optionally substituted, and
• An− represents an anion.