| abstract |
The present invention relates to a kind of Spirofluorene derivative species organic compound and its applications on organic electroluminescence device, the structure of the compound is that spiro fluorene is connected by carbon-carbon bond with nitrogenous hexa-member heterocycle structure cyclization, the connection of carbon-carbon bond cyclization had both improved materials chemistry stability, and in turn avoid the active position of branched group exposed, and entire molecule is a biggish rigid structure, has high triplet (T1)；And steric hindrance is big, is not easy to rotate, solid space structure is more stable, therefore compound glass transition temperature with higher and molecule thermal stability；In addition, HOMO the and LUMO distributing position of the compounds of this invention is separated from each other, suitable HOMO and lumo energy are made it have；Therefore, after the compounds of this invention is applied to OLED device, the luminous efficiency and service life of device can effectively be promoted. |