Four new cross-conjugated small molecules based on a central benzo[1,2-d:4,5-d′]bisoxazole moiety possessing semi-independently tunable HOMO and LUMO levels were synthesized and the properties of these materials were evaluated experimentally and theoretically. The molecules were thermally stable with 5% weight loss occurring well above 350 °C. The cruciforms all exhibited blue emission in solution
合成了四个新的基于中心苯并[1,2- d:4,5- d ']双
恶唑基团的具有半独立可调HOMO和LUMO能级的交叉共轭小分子,并通过实验和理论评估了这些材料的性能。分子是热稳定的,在高于350°C时发生了5%的重量损失。十字形在433–450 nm的溶液中均显示出蓝色发射。使用小分子主体4,4'-双(9-
咔唑基)-
联苯(CBP)由各种浓度的这些材料制成的主体客体OLED呈现深蓝色发光,其国际照明委员会(CIE)坐标为( 0.15≤ X ≤0.17,0.05≤ ÿ≤0.11),并且最大亮度效率高达〜2 cd A -1。这些结果证明了苯并双
恶唑十字形作为开发高性能深蓝色OLED的发光体的潜力。