Deep-Red to Near-Infrared Thermally Activated Delayed Fluorescence in Organic Solid Films and Electroluminescent Devices
Deep-Red to Near-Infrared Thermally Activated Delayed Fluorescence in Organic Solid Films and Electroluminescent Devices
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有机固体薄膜和电致发光器件中的深红至近红外热激活延迟荧光
DOI：
10.1002/anie.201706464
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发表时间：
2017-09-11
影响因子：
16.6
通讯作者：
Wang, Yue
中科院分区：
文献类型：
--
作者：
Li, Chenglong;Duan, Ruihong;Wang, Yue
设计和合成具有热激活延迟荧光(TADF)特性的高效深红(DR)和近红外(NIR)有机发光材料仍然是一个巨大的挑战。提出了一种制备具有强DR或NIR发射特性的TADF有机固体膜的策略。以三苯胺(TPA)和喹恶啉-6，7-二碳腈(QCN)为电子供体(D)和受体(A)，合成了TADF化合物TPA-QCN。以溶液中具有橙红色发光的TPA-QCN分子为掺杂剂，制备了DR和NIR发光固体薄膜。高掺杂浓度和整齐的薄膜分别表现出高效的DR和NIR发射。通过调节发光层中TPA-QCN掺杂浓度，制备了高效率的DR和NIR有机电致发光器件(OLED)。
The design and synthesis of highly efficient deep red (DR) and near-infrared (NIR) organic emitting materials with characteristic of thermally activated delayed fluorescence (TADF) still remains a great challenge. A strategy was developed to construct TADF organic solid films with strong DR or NIR emission feature. The triphenylamine (TPA) and quinoxaline-6,7-dicarbonitrile (QCN) were employed as electron donor (D) and acceptor (A), respectively, to synthesize a TADF compound, TPA-QCN. The TPA-QCN molecule with orange-red emission in solution was employed as a dopant to prepare DR and NIR luminescent solid thin films. The high doped concentration and neat films exhibited efficient DR and NIR emissions, respectively. The highly efficient DR and NIR organic light-emitting devices (OLEDs) were fabricated by regulating TPA-QCN dopant concentration in the emitting layers.