申请人:Takasago International Corporation
公开号:EP1577300A1
公开(公告)日:2005-09-21
The invention aims at providing platinum complexes useful as materials for light emitting devices and extremely excellent in heat stability, luminous characteristics, and luminous efficiency, and a process for effective preparation thereof. The invention relates to platinum complexes represented by the general formula [1]:
wherein any two of A, B and C are each independently an optionally substituted nitrogenous aromatic heterocyclic group and the other is optionally substituted aryl or optionally substituted heteroaryl; and Y is halogeno or an optionally substituted aryl or heteroaryl group which is bonded either directly or through oxygen (-O-) or sulfur (-S-) (with the proviso that when the adjacent two rings are nitrogenous aromatic heterocyclic groups, the cases wherein Y is chloro are excepted, while when the nonadjacent two rings are nitrogenous aromatic heterocyclic groups, the cases wherein Y is not halogeno are excepted).
该发明旨在提供作为发光器件材料有用的铂配合物,其在热稳定性、发光特性和发光效率方面极为优异,并提供了一种有效制备这些铂配合物的方法。该发明涉及由通式[1]表示的铂配合物:其中A、B和C中的任意两个分别是一个可选择取代的氮芳杂环基团,另一个是可选择取代的芳基或可选择取代的杂环基;Y是卤素或一个可选择取代的芳基或杂环基,它通过氧(-O-)或硫(-S-)直接或间接结合(但当相邻的两个环是氮芳杂环基团时,Y是氯的情况除外,而当非相邻的两个环是氮芳杂环基团时,Y不是卤素的情况除外)。