Linear and Cyclic Porphyrin Hexamers as Near-Infrared Emitters in Organic Light-Emitting Diodes
Linear and Cyclic Porphyrin Hexamers as Near-Infrared Emitters in Organic Light-Emitting Diodes
复制标题
DOI：
10.1021/nl2008778
复制
发表时间：
2011-06-01
期刊：
影响因子：
10.8
通讯作者：
Cacialli, Franco
中科院分区：
文献类型：
--
作者：
Fenwick, Oliver;Sprafke, Johannes K.;Cacialli, Franco
在这里，我们报告了含有线性和环状卟啉六聚体的有机发光二极管，由于它们扩展的圆周率共轭，它们的发射红移(波长(PL)分别为873和920 nm)。对poly(9，9‘-dioctylfluorene-alt-benzothiadiazole)，共混物的光致发光和电致发光进行了研究，结果表明，在添加剂的作用下，线型六面体的光致发光量子效率达到7.7%，实现了高色纯度的近红外电致发光。
Here we report organic light-emitting diodes incorporating linear and cyclic porphyrin hexamers which have red-shifted emission (lambda(PL) = 873 and 920 nm, respectively) compared to single porphyrin rings as a consequence of their extended pi-conjugation. We studied the photoluminescence and electroluminescence of blends with poly(9,9'-dioctylfluorene-alt-benzothiadiazole), demonstrating a high photoluminescence quantum efficiency of 7.7% for the linear hexamer when using additives to prevent aggregation and achieving high color purity near-infrared electroluminescence.