Color Pure and Stable Blue Light Emitting Material Containing Anthracene and Fluorene for OLED
作者:Hyun-Tae Park、Dae-Hwan Oh、Jong-Won Park、Jin-Hak Kim、Sung-Chul Shin、Yun-Hi Kim、Soon-Ki Kwon
DOI:10.5012/bkcs.2010.31.7.1951
日期:2010.7.20
A new blue light emitting anthracene derivative, 9,10-bis-(9',9'-diethyl-7'-t-butyl-fluoren-2'-yl)anthracene (BETF), has been designed and synthesized by a palladium catalyzed Suzuki cross-coupling. A theoretical calculation of the three-dimensional structure of BETF supports that it has a non coplanar structure and inhibited intermolecular interactions resulting in high luminescent efficiency and high color purity. BETF has good thermal stability with glass-transition temperature (Tg) of $131^\circ}C$. The PL maximum of BETF in solution and film were 438 nm and 440 nm, respectively, showing pure blue emission. A multilayer device using BETF as emitting material exhibits maximum luminescence efficiency of 2.2 cd/A and a pure blue emission (Commission Internationale de L'Eclairage (CIE) coordinates of x = 0.15, y = 0.10).
一种新型蓝光发射的蒽衍生物——9,10-双(9',9'-二乙基-7'-叔丁基-芴-2'-基)蒽(BETF),已通过钯催化的Suzuki交叉偶联反应设计合成。理论计算的BETF三维结构支持其具有非共面结构和抑制的分子间相互作用,从而实现高发光效率和高色纯度。BETF具有良好的热稳定性,玻璃化转变温度(Tg)为131°C。在溶液和薄膜中,BETF的PL最大值分别为438 nm和440 nm,显示出纯蓝色发射。使用BETF作为发光材料的多次层器件展现出最大发光效率为2.2 cd/A,发出纯蓝色光(国际照明委员会(CIE)坐标为x = 0.15,y = 0.10)。