YTTERBIUM COMPOUNDS WITH O, N-CHELATE HETEROCYCLIC LIGAND, LUMINESCENT IN INFRARED REGION, AND ORGANIC INFRARED LIGHT-EMITTING DIODE USING SAID COMPOUNDS AS EMISSION LAYER Russian patent published in 2014 - IPC C07F5/00 H01L51/50 

FIELD: chemistry.

SUBSTANCE: invention relates to ytterbium chemical compounds which are luminescent in the near-infrared region, particularly ytterbium compounds having at least one O,N-chelate heterocyclic ligand. The ligand is an acid residue of an aromatic alcohol, having 2-4 condensed six-member carbon rings and, in the ortho-position, an azole substitute with a heteroatom X (where X is sulphur, oxygen or NH). The compounds have a general formula I , where 1 denotes an acid residue of an aromatic alcohol, having 2-4 condensed six-member carbon rings; 2 denotes an azole substitute with a heteroatom, which is a 1-benzothiazole, 1-benzoimidazole or 1-benzoxazole moiety. An organic light-emitting diode is also disclosed.

EFFECT: invention enables to obtain ytterbium compounds which exhibit luminescence in the near-infrared region.

8 cl, 1 dwg, 1 tbl, 3 ex