Solution-Processable Gradient Red-Emitting π-Conjugated Dendrimers Based on Benzothiadiazole as Core: Synthesis, Characterization, and Device Performances
作者:Jin-Liang Wang、Yi Zhou、Yongfang Li、Jian Pei
DOI:10.1021/jo901539a
日期:2009.10.2
A family of gradient π-conjugated dendrimers, in which the 5,5,10,10,15,15-hexahexyltruxene unit is employed as the node, oligo(thienylethynylene)s (OTEs) are employed as light-harvesting branching units, and a 4,7-diaryl-2,1,3-benzothiadiazole is employed as the core, have been developed through the Sonogashira reaction in good yields. All dendrimers were fully characterized by 1H and 13C NMR, elemental
梯度π共轭树枝状聚合物家族,其中5,5,10,10,15,15-六己基甲苯单元用作节点,低聚(噻吩基乙炔基)(OTE)用作集光分支单元,以及通过Sonogashira反应以良好的产率开发了4,7-二芳基-2,1,3-苯并噻二唑作为核心。所有树枝状聚合物均具有1 H和13的特征13 C NMR,元素分析和MALDI-TOF MS。对它们的稳态和时间分辨光物理性质的研究表明,梯度树突状支架可导致有效的能量转移和强烈的红色发射。基于良好的溶解性和优异的成膜性,通过简单的溶液旋涂工艺制备了使用这些树枝状聚合物作为活性材料的单层红色发光二极管。达到了中等的设备性能;例如,1290烛光/米的最大亮度2与1.07 CD的最大发光效率/从执行的BTDyn。