Pyrene-cored dendrimer with carbazole derivatives as dendrons: synthesis, properties and application in white light-emitting diode
作者:Jia You、Guiyang Li、Renjie Wang、Qiuping Nie、Zhonggang Wang、Jiuyan Li
DOI:10.1039/c1cp21848d
日期:——
the solution sample, the emission peaks of the solid dendrimer film were apparently broadened and red-shifted, indicating the strong π–π stacking effect between the pyrene moieties. By doping 1.5% of the dendrimer in 4,4′-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), a light-emitting diode device was fabricated in the ITO/NPB/NPB : dendrimer (1.5%)/TPBI/Mg : Ag configuration, which emitted a white
一种新的树枝状聚合物 芘通过铃木偶联反应已成功制备了作为核的咔唑和作为树枝状的咔唑衍生物。通过1 H NMR,元素分析和MALDI-TOF MS方法确认了其化学结构。合成的树枝状聚合物具有优异的热稳定性,其初始分解温度超过470°C,荧光量子产率高达86%。发光光谱表明,相对于溶液样品,固体树枝状聚合物膜的发射峰明显加宽并发生红移,表明the部分之间具有强烈的π-π堆积效应。通过在4,4'-双[ N-(1-萘基)-N中掺杂1.5%的树枝状聚合物-苯基氨基]联苯(NPB),以ITO / NPB / NPB:树状聚合物(1.5%)/ TPBI / Mg:Ag构型制造,发出白色,并带有国际照明委员会(Commission Internationale L'Eclairage)( CIE x,y)坐标为(0.29,0.34),最大亮度为1300 cd m -2,在白色发光二极管的应用中显示出广阔的前景。