Benzoselenadiazole-based donor-acceptor small molecule: Synthesis, aggregation-induced emission and electroluminescence
Benzoselenadiazole-based donor-acceptor small molecule: Synthesis, aggregation-induced emission and electroluminescence
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基于苯并硒二唑的供体-受体小分子：合成、聚集诱导发射和电致发光
DOI：
10.1016/j.dyepig.2017.10.020
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发表时间：
2018
影响因子：
4.5
通讯作者：
Huang Fei
中科院分区：
文献类型：
--
作者：
Liang Aihui;Wang Han;Chen Yi;Zheng Xiaoyan;Cao Tian;Yang Xiulan;Cai Ping;Wang Zhiping;Zhang Xiaowen;Huang Fei
合成并表征了几种具有聚集诱导发光（AIE）特性的四苯乙烯和三苯胺修饰的苯并硒二唑类给体-受体（D-A）衍生物。讨论了它们的物理、热学、电化学和电致发光（EL）性质以及AIE性质。所有的发光体都可溶于普通的有机溶剂，并显示出很高的热稳定性，其Td为399-460 °C。在固态下的绝对光致发光量子产率范围为14.2%至36.5%。TPE-Se-TPE、TPA-Se-TPE和TPA-Se-TPA的D-A结构使它们分别具有由扭曲的分子内电荷转移（TICT）和分子内旋转限制（RIR）主导的聚集引起的猝灭（ACQ）和聚集诱导的发射增强（AIEE）效应。TPA-Se-TPE的器件性能最好，最大发光效率为2.91 cd/A，最大亮度为5855 cd/m2。这是首次报道的苯并硒二唑基荧光团与AIE功能的有机电子应用。
Several tetraphenylethene and triphenylamine decorated donor-acceptor (D-A) benzoselenadiazole derivatives with aggregation-induced emission (AIE) features were synthesized and characterized. The photophysical, thermal, electrochemical and electroluminescent (EL) properties, as well as the AIE property of the resulting luminogens are discussed. All the luminogens are soluble in common organic solvents and show high thermal stability with aTdof 399–460 °C. The absolute photoluminescence quantum yield in the solid state ranged from 14.2% to 36.5%. The D–A structures of TPE-Se-TPE, TPA-Se-TPE and TPA-Se-TPA enable them to have aggregation-caused quenching (ACQ) plus aggregation-induced emission enhancement (AIEE) effects dominated by the twisted intramolecular charge-transfer (TICT) and restriction of intramolecular rotations (RIR), respectively. The best device performances were obtained from TPA-Se-TPE with a maximal luminous efficiency of 2.91 cd/A and the maximal brightness is 5855 cd/m2. This is the first report of benzoselenadiazole-based fluorophore with an AIE feature for organic electronics application.