Patent ID: 8759331

Claim:
A compound characterized in that it responds to the following formula: wherein: n=2 or 3, m and m′, identical or different, are equal to 1 or 2, h=0 or 1, X is a metal ion, V and V′, identical or different, are hydrogen atoms, or optionally substituted linear or branched C 1 -C 30 alkyl or alkoxy chains, or optionally substituted C 1 -C 30 alkyl chains linked together via an optionally substituted C, O, N or S atom, to form a cycle, R 1 , R′ 1 , R 2 , R′ 2 , R 4 and R 5 , identical or different, are hydrogen atoms, or optionally substituted linear or branched C 1 -C 30 alkyl or alkoxy chains, R 3 and R′ 3 , identical or different, are hydrogen atoms, or optionally substituted linear or branched C 1 -C 30 alkyl or alkoxy chains, or R 3 and R′ 3 are linked together to form an optionally substituted heteroalkyl or heteroaryl cycle comprising 5 to 14 atoms, and preferably a pyridine, Y is a spacer selected among optionally substituted linear, branched or cyclic C 1 -C 30 alkyl or alkoxy chains comprising at least one heteroatom selected among O, N and S, said spacer Y being directly linked to the quinoline group via its heteroatom O, N or S, Z is selected among —OH, —OR, —SR, —OC(O)R, —OC(O)OR, —OC(O)NHR, —OC(O)SR, —OC(O)CH(NH 2 )R, —OC(O)NHCH(COOH)R, —OP(O)(OH)(OH) and —OP(O)(OR)(OR′) groups, in which R and R′, identical or different, are hydrogen atoms, optionally substituted linear or branched C 1 -C 30 alkyl or alkoxy chains, or optionally substituted aryl or heteroaryl groups comprising 5 to 14 atoms, and with the proviso that: the spacer Y is directly linked to one of the carbon atoms C 3 or C 5 or to the nitrogen atom N 4 , and when the spacer Y is directly linked to one of the carbon atoms C 3 or C 5 , the nitrogen atom N 4 is linked to a radical R″ 1 selected among hydrogen atom, or an optionally substituted linear or branched C 1 -C 30 alkyl or alkoxy chain, and when n=2, at least two of the R 1 , R′ 1 , R″ 1 , R 2 , R′ 2 , R 3 , R′ 3 , R 4 or Y are substituted by a carboxylate group —COO − , or when n=3, at least three of the R 1 , R′ 1 , R″ 1 , R 2 , R′ 2 , R 3 , R′ 3 , R 4 or Y are substituted by a carboxylate group —COO − .