Compounds useful as ligands and particularly as organic chromophores for complexing lanthanides and applications thereof

摘要

The invention relates to the use of compounds comprising at least one 2-(1H-tetrazol-5-yl)pyridine unit, of formula (I) below:;
as ligands for lanthanides and, more especially, as organic chromophores for complexing these elements.
;It also relates to lanthanide complexes using these compounds as complexing organic chromophores, and to new compounds containing one or more 2-(1H-tetrazol-5-yl)pyridine units, which are useful as ligands for lanthanides and, in particular, as organic chromophores for complexing these elements.;Applications: photonics and optoelectronics, especially for forming light-emitting devices such as electroluminescent diodes; biology, as for example for the preparation of luminescent probes.

主权项

1. A process for complexing a lanthanide with an organic chromophore, comprising putting the lanthanide in contact with the organic chromophore to form a complex, the organic chromophore being a compound of formula (II): wherein:
either a group of formula: wherein:
R1 is (a) a hydrogen atom; (b) a halogen atom; (c) a 5-membered aromatic ring or a 6-membered aromatic ring, the ring comprising one or more heteroatoms or one or more non-cyclic substituents; (d) a sequence of at least two 5-membered aromatic rings or a sequence of at least two 6-membered aromatic rings, the rings being bonded to one another by a covalent bond and at least one of the rings optionally comprising one or more heteroatoms or one or more non-cyclic substituents; or (e) a linear or branched C1 to C12 hydrocarbon group optionally comprising one or more heteroatoms; andR2 is (a) a carboxylic acid group; (b) a 5-membered aromatic ring or a 6-membered aromatic ring, the ring optionally comprising one or more heteroatoms or one or more non-cyclic cyclic substituents; or (c) a 2-(1H-tetrazol-5-yl)pyridine unit;or Y is (a) a non-aromatic ring optionally comprising one or more heteroatoms or one or more substituents; or (b) a group —(CH2)p—Z where p is an integer from 1 to 6 and Z is a non-aromatic ring, optionally comprising one or more heteroatoms or one or more substituents; whereby the lanthanide is complexed with the organic chromophore.