申请人:Jin Sung Ho
公开号:US20090200920A1
公开(公告)日:2009-08-13
This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [ĈN]
2
ML, comprising chelate monoionic ligands (L), also called ancillary ligands. It has been surprisingly found that when the ancillary ligand comprises a substituted aromatic ring bearing a substituent possessing adequate electron-donating properties, said ligand (L) advantageously participates in the emission process, significantly shifting emission towards higher energies (blue-shift) and enabling appreciable improvement of the emission efficiency of complexes [ĈN]
2
ML.
Still objects of the invention are the use of said light emitting materials and organic light emitting device comprising said light emitting material.
这项发明涉及包含新型正金属化过渡金属配合物[ĈN]2ML的发光材料,包括螯合单离子配体(L),也称为辅助配体。令人惊讶地发现,当辅助配体包含带有足够电子给体性质的取代芳香环的取代基时,所述配体(L)有利地参与发射过程,显著将发射转移到更高能量(蓝移),并能够显著改善配合物[ĈN]2ML的发射效率。本发明还涉及使用所述发光材料和包括所述发光材料的有机发光器件。