Achieving High‐Performance Solution‐Processed Deep‐Red/Near‐Infrared Organic Light‐Emitting Diodes with a Phenanthroline‐Based and Wedge‐Shaped Fluorophore
Achieving High‐Performance Solution‐Processed Deep‐Red/Near‐Infrared Organic Light‐Emitting Diodes with a Phenanthroline‐Based and Wedge‐Shaped Fluorophore
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DOI：
10.1002/aelm.201800677
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发表时间：
2019-02
影响因子：
6.2
通讯作者：
Youming Zhang;Jiatao Wu;Jun Song;Zhao Chen;Junjie He;Xin Wang;Haiyang Liu;Shuming Chen;J. Qu;W. Wong
中科院分区：
文献类型：
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作者：
Youming Zhang;Jiatao Wu;Jun Song;Zhao Chen;Junjie He;Xin Wang;Haiyang Liu;Shuming Chen;J. Qu;W. Wong
设计并合成了一种基于菲罗啉的给受体型荧光团，并对其热学、光物理和电化学特性进行了研究。该荧光团表现出较强的深红/近红外（DR/NIR）发射，在非极性正己烷溶剂和极性氯仿溶剂中的光致发光量子产率分别为74.8%和4.5%，在纯膜和掺杂5 wt%聚甲基丙烯酸甲酯薄膜中的光致发光量子产率分别为1.26%和18.4%。制备的DR/NIR器件，在不同掺杂浓度下，发射峰为670 ~ 696 nm，外量子效率为3.18 ~ 1.43%。
A phenanthroline‐based donor–acceptor type fluorophore is designed and synthesized, and its thermal, photophysical, and electrochemical characteristics are investigated. This fluorophore displays a strong deep‐red/near‐infrared (DR/NIR) emission with the photoluminescence quantum yield of 74.8% in nonpolar n‐hexane solvent and 4.5% in polar chloroform solvent, as well as 1.26% in neat film and 18.4% in 5 wt% doped poly(methyl methacrylate) film. DR/NIR devices are fabricated, with emission peaks at 670–696 nm and external quantum efficiencies of 3.18–1.43% at different doping concentrations.