Synthesis and characterization of novel phosphorescent host materials based on triphenylpyridine derivatives
作者:Xu Zhang、Qingqing Ye、Yingtao Fan、Xiaoyu Hu、Yingzhong Shen
DOI:10.1007/s11696-020-01063-y
日期:2020.7
Three novel phosphorescent host materials, 4′,4‴-(4-phenylpyridine-2,6-diyl)bis(N,N-diphenyl-[1,1′-biphenyl]-4-amine) (P1), 2,6-bis(4′-(naphthalen-1-yl)-[1,1′-biphenyl]-4-yl)-4-phenylpyridine (P2), and 2,6-bis(3′,5′-dimethyl-[1,1′-biphenyl]-4-yl)-4-phenylpyridine (P3), based on triphenylpyridine with a symmetrical molecular conformation were designed and synthesized from 2,6-bis(4-bromophenyl)-4-phenylpyridine
三种新型磷光主体材料4',4‴-(4-苯基吡啶-2,6-二基)双(N,N-二苯基-[1,1'-联苯] -4-胺)(P1), 2, 6-双(4'-(萘-1-基)-[1,1'-联苯] -4-基)-4-苯基吡啶(P2)和2,6-双(3',5'-二甲基由三苯基吡啶以对称的分子构象为基础,设计并合成了[[1,1'-联苯] -4-基)-4-苯基吡啶(P3),由2,6-双(4-溴苯基)-4-苯基吡啶( 3)与[4-(二苯基氨基)苯基]硼酸(A1),[4-(萘-1-基)苯基]硼酸(A2)和(3,5-二甲基苯基)硼酸(A3)反应通过铃木偶联反应。通过元素分析,1 H NMR和13 C NMR光谱对获得的化合物进行表征。通过热重分析和差示扫描量热法对这些材料的热性能进行了研究,结果表明它们在玻璃化转变温度超过94°C时表现出出色的热稳定性。还研究了它们的光物理性质,结果表明,所有化合物均具有高于2.6 eV的