Patent ID: 7662486
Filing Date: 2010-02-16
Classification: C09K,H01L,H05B,Y10S

Abstract:
1. An emission material whose chemical structure is represented by formula [I]: wherein “M” represents a metal atom whose atomic weight is greater than 40, m is smaller than or equal to the ligand number of “M”, n is a positive integral and is smaller than m, “Y1” is selected from aryl or heteroaryl, “Y2” and “Y3” are independently selected from nitrogen-containing heterocyclic ring, “R1”, “R2” and “R3” are independently selected from any substituent group or hydrogen, “A” is selected from a group consisted of naphthalene, anthracene, phenanthrene and biphenyl, and “X” is haloalkyl, halogen, cyano group or any other electron-withdrawing group.