The subject is to provide a novel polycyclic aromatic compound and an organic EL device using the same. The solution is a polycyclic aromatic compound or its polymer represented by formula (1), and an organic EL device using the same. (A-C rings may be substituted aryl or heteroaryl rings; Y1 is B, etc.; X1 and X2 are >O or >N-R, etc.; R may be a single bond or a connecting group binding A-C rings, and the compound represented by formula (1) may be substituted with halogens, etc.) No selection figure provided.
Highly efficient dual-core derivatives with EQEs as high as 8.38% at high brightness for OLED blue emitters
作者:Seokwoo Kang、Hyocheol Jung、Hayoon Lee、Sunwoo Park、Joonghan Kim、Jongwook Park
DOI:10.1039/c9tc04603h
日期:——
meta, and para positions to a dual core moiety of anthracene and pyrene, two chromophores with good luminous efficiency; these three materials were 2-(6-(10-(2-(diphenylamino)phenyl)anthracen-9-yl)pyren-1-yl)-N,N-diphenylaniline (o-TPA-AP-TPA), 3-(6-(10-(3-(diphenylamino)phenyl)anthracen-9-yl)pyren-1-yl)-N,N-diphenylaniline (m-TPA-AP-TPA), and 4-(6-(10-(4-(diphenylamino)phenyl)anthracen-9-yl)pyren-1-yl)-N
通过在邻,间和对位将三苯胺侧基连接到蒽和pyr的双核部分上,这两种发色团具有良好的发光效率,从而合成了三种蓝色荧光材料。这三种材料是2-(6-(10-(2-(二苯基氨基)苯基)蒽-9-基)吡啶-1-基)-N,N-二苯基苯胺(o -TPA-AP-TPA),3- (6-(10-(3-(二苯基氨基)苯基)蒽-9-基)吡喃-1-基)-N,N-二苯基苯胺(m -TPA-AP-TPA)和4-(6-(10 -(4-(二苯基氨基)苯基)蒽-9-基)吡啶-1-基)-N,N-二苯基苯胺(p -TPA-AP-TPA)。测量了合成材料的光学,热和电致发光(EL)性能。发现这三种材料在溶液状态下都是真正的蓝色发射体,并显示出较高的PLQY值。掺杂有p -TPA-AP-TPA的器件在5000 cd m -2的高亮度下显示出9.14 cd A -1的非常高的效率和8.38%的EQE 。
Iridium phosphors with peripheral triphenylamine encapsulation: highly efficient solution-processed red electrophosphorescence
作者:Minrong Zhu、Yanhu Li、Sujun Hu、Chen'ge Li、Chuluo Yang、Hongbin Wu、Jingui Qin、Yong Cao
DOI:10.1039/c2cc17515k
日期:——
The peripheral triphenylamine-encapsulated red-emitting iridium(III) complexes have been designed and synthesized. External quantum efficiency over 15% has been realized in single-layer polymer light-emitting diodes, which is the highest ever reported for solution-processedred phosphorescence.