Substituted metal-phthalocyanines, their preparation and the use thereof

Compounds of general formula (I)

• 7
• in which:
• M is chosen in the group consisting of Zn, Si(OR8)2, Ge(OR8)2 and AlOR8;
• R is H or a group selected from alkyl, alkenyl and alkyloxy group, linear or branched, having from 1 to 10 carbon atoms provided that, when R is different from H, the positions 8, 11, 15, 18, 22, 25 or 9, 10, 16, 17, 23, 24 are substituted;
• and
• R1 and R2, equal or different from one another, are H or a group (X)pR3, wherein X is chosen in the group consisting of O, S, —NR6 and —CH2—;
• and R3 is
• 8
• where:
• Y is chosen in the group consisting of C1-10 alkyl and phenyl, possibly substituted, or it forms with the Z group, to which it is bound, a saturated or unsaturated heterocycle, possibly substituted, which may contain up to two heteroatoms chosen in the group consisting of N, O and S;
• Z is chosen in the group consisting of —N, —CH2N and —CONHCH2CH2N;
• R4 and R5, equal or different from one another, are chosen in the group consisting of C1-15 alkyl and phenyl, or form with the Z group, to which they are bound, a saturated or unsaturated heterocycle, possibly substituted, which may contain up to two heteroatoms chosen in the group consisting of N, O and S;
• R6 and R7, equal or different from one another, are chosen in the group consisting of H and C1-C15 alkyl;
• m, n, p, w, t and u, independently from one another, are 0 or 1;
• and
• v is an integer comprised between 1 and 3,
• provided that when R1 and R2 are the same, they are not H and are in the positions 1,4 or 2,3, whereas, when only one between R1 and R2 is different from H, the position 1 or 2 is substituted, or R1 and R2, taken together, form a saturated or unsaturated heterocycle, possibly substituted, which may contain up -to two heteroatoms chosen in the group consisting of N, O and S;
• R8 is chosen from between H and C1-C15 alkyl.