Composition

A composition comprising at least:

• a) a chemical compound of formula (I):
• wherein:
• m is an integer 0, 1 or 2;
• R1, R2, R3 and R4 are the same or different and each independently selected from the group consisting of hydrogen, halogen, methyl, ethyl, linear or branched (C3-C16)alkyl, perfluoro(C1-C12)alkyl, hydroxy(C1-C16)alkyl, (C3-C12)cycloalkyl, (C6-C12)bicycloalkyl, (C7-C14)tricycloalkyl, (C6-C10)aryl, (C6-C10)aryl(C1-C6)alkyl, perfluoro(C6-C10)aryl, perfluoro(C6-C10)aryl(C1-C6)alkyl, tri(C1-C6)alkoxysilyl and a group of formula (A):
• wherein:
• Z1 is a bond or a group selected from the group consisting of:
• (CR5R6)a, O(CR5R6)a, (CR5R6)aO, (CR5R6)a—O—(CR5R6)b, (CR5R6)a—O—(SiR5R6)b, (CR5R6)a—(CO)O—(CR5R6)b, (CR5R6)a—O(CO)—(CR5R6)b, (CR5R6)a—(CO)—(CR5R6)b, where a and b are integers which may be the same or different and each independently is 1 to 12;
• R5 and R6 are the same or different and each independently selected from the group consisting of hydrogen, methyl, ethyl, linear or branched (C3-C6)alkyl, hydroxy, methoxy, ethoxy, linear or branched (C3-C6)alkyloxy, acetoxy, (C2-C6)acyl, hydroxymethyl, hydroxyethyl, linear or branched hydroxy(C3-C6)alkyl, phenyl and phenoxy;
• Aryl is phenyl or phenyl substituted with one or more of groups selected from the group consisting of methyl, ethyl, linear or branched (C3-C6)alkyl, hydroxy, methoxy, ethoxy, linear or branched (C3-C6)alkyloxy, acetoxy, (C2-C6)acyl, hydroxymethyl, hydroxyethyl, linear or branched hydroxy(C3-C6)alkyl, phenyl and phenoxy;
• b) an organo-ruthenium compound represented by formula (II):
• wherein
• c and d are integers from 0 to 5;
• Z is oxygen or sulfur;
• R7 is selected from the group consisting of hydrogen, (C1-C20)alkyl, (C2-C20)alkenyl, (C2-C20)alkynyl and (C6-C10)aryl;
• and
• R8, R9, R10 and R11 are the same or different and each independently selected from the group consisting of hydrogen, halogen, (C1-C16)alkyl, (C1-C16)alkoxy, (C1-C16)perfluoroalkyl, (C3-C7)cycloalkyl, (C2-C16)alkenyl, (C6-C14)aryl, (C6-C14)perfluoroaryl, (C3-C12)heterocyclyl, —OR16, —NO2, —COOH, —COOR16, —CONR16R17, —SO2NR16R17, —SO2R16, —CHO, —COR16, wherein R16 and R17 are the same or different and each independently selected from the group consisting of (C1-C6)alkyl, (C1-C6)perfluoroalkyl, (C6-C14)aryl, (C6-C14)perfluoroaryl;
• or wherein
• two or more of R8, R9, R10 and R11 taken together with the carbon atoms to which they are attached to form a substituted or unsubstituted, fused (C4-C8)carbocyclic ring, or a substituted or unsubstituted, fused aromatic ring;
• each R12, R13 and R14 may be the same or different and independently of the other selected from the group consisting of hydrogen, halogen, (C1-C16)alkyl, (C1-C16)alkoxy, (C1-C16)perfluoroalkyl, (C3-C7)cycloalkyl, (C2-C16)alkenyl, (C6-C14)aryl, (C6-C14)perfluoroaryl, (C3-C12)heterocyclyl, —OR16, —NO2, —COOH, —COOR16, —CONR16R17, —SO2NR16R17, —SO2R16, —CHO, —COR16, wherein R16 and R17 are the same or different and each independently selected from the group consisting of (C1-C6)alkyl, (C1-C6)perfluoroalkyl, (C6-C14)aryl, (C6-C14)perfluoroaryl;
• R15 is selected from the group consisting of (C1-C16)alkyl, (C1-C16)perfluoroalkyl, (C3-C16)cycloalkyl, (C6-C14)aryl, (C6-C14)perfluoroaryl and (C3-C12)heterocyclyl;
• Ar1 and Ar2 are the same or different and each independently selected from the group consisting of substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl and substituted or unsubstituted naphthyl, wherein each of said substituents are independently selected from the group consisting of methyl, ethyl and linear or branched (C3-C6)alkyl;
• c) a photosensitizer represented by formula (III):
• wherein
• Y is halogen;
• and
• R30 and R31 are the same or different and independently of each other selected from the group consisting of hydrogen, methyl, ethyl, linear or branched (C3-C12)alkyl, (C3-C12)cycloalkyl, (C6-C12)bicycloalkyl, (C7-C14)tricycloalkyl, (C6-C10)aryl, (C6-C10)aryl(C1-C3)alkyl, (C1-C12)alkoxy, (C3-C12)cycloalkoxy, (C6-C12)bicycloalkoxy, (C7-C14)tricycloalkoxy, (C6-C10)aryloxy(C1-C3)alkyl and (C6-C10)aryloxy;
• and
• d) a chemical compound of formula (IV):
• wherein
• p is an integer 0, 1 or 2;
• Re1, Re2, Re3 and Re4 are, each independently, selected from the group consisting of hydrogen, halogen, methyl, ethyl, linear (C1-C16)alkyl or branched (C3-C16)alkyl, perfluoro(C1-C12)alkyl, hydroxy(C1-C16)alkyl, (C3-C12)cycloalkyl, (C6-C12)bicycloalkyl, (C7-C14)tricycloalkyl, (C6-C10)aryl, (C6-C10)aryl(C1-C6)alkyl, perfluoro(C6-C10)aryl, perfluoro(C6-C10)aryl(C1-C6)alkyl, tri(C1-C6)alkoxysilyl, vinyl group, acrylate group, methacrylate group and an allyl group, linear (C1-C16)alkyl or branched (C3-C16)alkyl having a vinyl group, acrylate group, methacrylate group or an allyl group as the end group;
• and
• wherein at least one of Re1, Re2, Re3 and Re4 is a vinyl group, acrylate group, methacrylate group, an allyl group, linear (C1-C16)alkyl or branched (C3-C16)alkyl having a vinyl group, acrylate group, methacrylate group or an allyl group as the end group.