COMPOUNDS USEFUL AS LIGANDS AND PARTICULARLY AS ORGANIC CHROMOPHORES FOR COMPLEXING LANTHANIDES AND APPLICATIONS THEREOF
申请人:Giraud Marion
公开号:US20110112289A1
公开(公告)日:2011-05-12
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.
bipyridine‐based (25 nm) complexes towards the visible region (up to 440 nm). Moreover, the substitution of the terpyridine–tetrazolate system with different groups in the ligand series L3–L6 has a very important effect on both absorption spectra and luminescence efficiency of their lanthanidecomplexes. The tetrazole‐based ligands L1 and L3–L8 sensitize efficiently the luminescent emission of lanthanide ions in the