Two non-doped blue emitters for electroluminescent devices: Preparation, photophysics and electroluminescence
作者:Jiarong Zhu、Ninghua Yin、Liheng Feng
DOI:10.1016/j.dyepig.2016.04.048
日期:2016.9
good thermal stability (Td > 330 °C, Tg > 160 °C). Electrochemical Redox properties of the emitters were measured by cyclic voltammetry, and the highest occupied molecular orbital and the lowest unoccupied molecular orbital levels are in good agreement with the results of theoretical calculations. Additionally, non-doped blue organic light-emitting diodes with these emitters have been achieved with
两个蓝色发射器,2,7-双(9-苄基-9 H通过铃木偶联反应合成了-咔唑-2-基)py和2,7-双(4-(5-苯基-1,3,4-恶二唑-2-基)苯基)py。光物理研究表明,两个发射器具有出色的光学和电子传输特性。两个发射器的发射峰分别为430 nm和439 nm,在氯仿中的荧光量子产率分别为87.5%和68.6%。发射器都具有良好的热稳定性(Td> 330°C,Tg> 160°C)。用循环伏安法测定了发射体的电化学氧化还原性能,最高占据分子轨道和最低未占据分子轨道水平与理论计算结果吻合良好。此外,通过国际照明委员会(x,y)分别为(0.17,0.11)和(0.16,0.15)的坐标,非常接近国家电视系统委员会的标准蓝色。值得注意的是,设备A(2,7-双(9-苄基-9H-咔唑-2-基)pyr具有平衡的性能,没有任何明显的缺点。