Blue fluorescence dopant compound and organic electroluminescent device using the same
申请人:NANJING TOPTO MATERIALS CO., LTD.
公开号:US09938287B1
公开(公告)日:2018-04-10
A blue fluorescence dopant is characterized by the following structural formula:
in which R1, R2, R3, R4, R5 and R6 are, each independently, selected from, a hydrogen atom, a C1-C10 linear or branched alkyl group, a C1-C20 linear or branched alkyl group, a substituted or unsubstituted N-(phenylmethyl)imino group, a phenyl group, phenylamine, diphenylamine, phenyl pyridinylamine, bipyridinylamine, phenyl naphthylamine, binaphthylamine, phenyl phenanthrylamine, biphenanthrylamine, phenyl anthrylamine, bianthrylamine, phenanthridine, biphenyl, a pyridinyl group, a pyrimidinyl group, a quinolyl group and a triazinyl group. The blue fluorescence dopant disclosed in the present invention may facilitate to lower driving voltage and increase efficiency, brightness, heat stability, color purity, lifetime, etc. Further, an organic electroluminescent device using the blue fluorescence dopant has excellent performances of high efficiency and long lifetime.
一种蓝色荧光掺杂剂的特征结构公式如下:
其中,R1、R2、R3、R4、R5和R6每个独立地选自以下任一:氢原子、C1-C10的线性或支链烷基团、C1-C20的线性或支链烷基团、取代或未取代的N-(苄基)亚胺基团、苯基、苯胺、二苯胺、苯基吡啶基胺、联吡啶胺、苯基萘胺、双萘胺、苯基蒽胺、双蒽胺、苯基菲啶、双苯基、吡啶基团、嘧啶基团、喹啉基团和三嗪基团。本发明披露的蓝色荧光掺杂剂有助于降低驱动电压并提高效率、亮度、热稳定性、色纯度、寿命等。此外,使用该蓝色荧光掺杂剂的有机电致发光装置具有高效率和长寿命的优良性能。