Patent ID: 7892851

Claim:
Compound corresponding to at least one of the general formulae (I) and (II) below: in which: X 1 and Y 1 represent, independently of one another, an oxygen or sulphur atom or an ═NH group; Y 2 represents an —OH, —SH or —NH 2 group; u, v and w are, independently of one another, 0 or 1, with the proviso, however, that at least one of u, v and w is other than 0; U, V and W represent, independently of one another, an aryl or heteroaryl group having one or more rings, each having 5 or 6 ring members; at least one of R 1 , R 2 and R 3 represents a group —(Z) z K in which: z is 0 or 1, Z represents a C 3 to C 6 cyclic, or C 1 to C 6 linear or branched, saturated or unsaturated divalent hydrocarbon group, this hydrocarbon group optionally containing one or more oxygen, nitrogen or sulphur atoms; and K represents: either a group —Si(Cl) m (OR 4 ) n (R 5 ) p in which: m and n are integers ranging from 0 to 3, p is an integer ranging from 0 to 2, with the proviso, however, that m+n is equal to 1, 2 or 3 and m+n+p is equal to 3; R 4 and R 5 represent, independently of one another, a C 3 to C 6 cyclic, or C 1 to C 6 linear or branched, saturated or unsaturated hydrocarbon group, this hydrocarbon group optionally containing one or more oxygen, nitrogen or sulphur atoms, or else an aryl or heteroaryl group having a 5- or 6-membered ring; or a metal-complexing group; and in which that or those of R 1 , R 2 and R 3 which does not or do not represent a group —(Z) z K, if there is one, represent(s) a hydrogen or halogen atom, a —CN or —NO 2 group, a C 3 to C 6 cyclic, or C 1 to C 6 linear or branched, saturated or unsaturated hydrocarbon group, this hydrocarbon group optionally containing one or more oxygen, nitrogen or sulphur atoms, or else an aryl or heteroaryl group having a 5- or 6-membered ring; with the exclusion of compounds in which one of R 1 and R 3 represents a group —O(CH 2 ) 3 —Si(OR 4 ) n (R 5 ) p when U and W both represent a phenyl group, v is 0, R 2 represents a hydrogen atom, X 1 and Y 1 both represent an oxygen atom or X 1 represents an oxygen atom and Y 2 represents an —OH group.