Organic electroluminescent compound containing iridium, preparation method thereof and organic electroluminescent device
申请人:Zhou Mingjie
公开号:US08859771B2
公开(公告)日:2014-10-14
An organic electroluminescent compound containing Iridium, preparation method thereof and an organic electroluminescent device are disclosed. The compound is represented by the structure (2), wherein, R is C1˜C4 alkyl. The structure of the compound contains bipyridine ligand, also carries alkoxy group and fluorine atom, which improves its carrier injection and transfer ability, and increases its internal quantum efficiency and electroluminescent efficiency. Furthermore, the compound uses strong field ligand 2-pyridine carboxylic acid as assistant ligand, which causes an effective blue shift of its emission spectrum and increases light-emitting efficiency of blue light phosphorescence greatly.
一种含有铱的有机电致发光化合物,其制备方法以及有机电致发光器件被揭示。该化合物由结构(2)表示,其中,R为C1~C4烷基。该化合物的结构含有联吡啉配体,还带有烷氧基和氟原子,这提高了其载流子注入和传输能力,并增加了其内部量子效率和电致发光效率。此外,该化合物使用强场配体2-吡啶甲酸作为辅助配体,导致其发射光谱有效蓝移,并大大增加蓝光磷光的发光效率。