Corrole compositions

A composition comprising:

• a corrole according to formula [I];
• wherein R1 through R8 are each independently H, halogen, CHO, C1-C4 alkyl or halogenated alkyl;
• R9 through R11 are each independently H, straight or branched C1-C12 alkyl, C6-C12 aralkyl, C6-C12 aryl, or C6-C12 heteroaryl, having an oxygen or nitrogen atom as a heteroatom, wherein each of straight or branched C1-C12 alkyl, C6-C12 aralkyl, C6-C12 aryl, or C6-C12 heteroaryl may be unsubstituted or substituted by a halogen or by an amino group;
• L, may be present or absent, if present is halogen, an oxo group, a hydroxyl group, acetonitrile, dimethylsulfoxide, dimethylformamide, a pyridine group or a water molecule;
• and
• M is H or an atom from group 3-15 or an f-block element;
• and
• a protein non-covalently conjugated to the corrole, the composition having the form of nanoparticles, wherein at least 50% of said particles have a mean diameter size in the range of 30 nm to 200 nm.