Synthesis of a novel iridium complex and its exhaustive investigations of photophysics, electrochemistry, luminescent mechanism and electroluminescent performances
Synthesis of a novel iridium complex and its exhaustive investigations of photophysics, electrochemistry, luminescent mechanism and electroluminescent performances
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DOI：
10.1016/j.jlumin.2018.06.048
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发表时间：
2018-11
影响因子：
3.6
通讯作者：
Jian Liu;Peisen Yuan;Aihui Liang;Dongge Ma
中科院分区：
文献类型：
--
作者：
Jian Liu;Peisen Yuan;Aihui Liang;Dongge Ma
摘要合成了一种新型铱配合物[(dppy)2Ir(ttz)， Ir配合物]，辅助配体与含二氯桥键的铱配合物二聚体发生了十二羧基反应，首次发现了合成Ir配合物的脱羧配位反应。研究了Ir配合物的单晶结构、热稳定性、紫外-可见吸收、光致发光、电化学和电致发光性能。红外配合物在低发射效率的二氯甲烷和有机发光二极管中分别可以观察到蓝色和橙红色的发射。我们探讨了排放性能差的原因。此外，还通过DFT/TD-DFT计算研究了（dppy）2Ir（ttz）的发光机理。
A novel iridium complex [(dfppy)2Ir(ttz), Ir complex] was synthesizedviadecarboxylic reaction of ancillary ligand with the iridium complex dimer containing dichloro-bridged bond, the decarboxylation-coordination reaction for the synthesis of Ir complex firstly is found. The single crystal structure, thermally stability, UV–vis absorption, photoluminescence, electrochemistry, and electroluminescent performances of the Ir complex were investigated. Blue and orange-red emissions can be observed for the Ir complex in dichloromethane and OLED with low emissive efficiencies, respectively. We explored the reason for the poor emissive performance. In addition, the luminescent mechanism of (dfppy)2Ir(ttz) was also studied through DFT/TD-DFT calculations.