Novel phosphorescent neutral iridium(III) complex with the steric hindrance for highly efficient red organic light-emitting diodes

作者：Tao, Peng; Miao, Yanqin; Wang, Kexiang; Li, Hongxin; Zhao, Qiang^*; Wang, Hua^*; Li, Jie; Xu, Bingshe; Huang, Wei^*

来源：Tetrahedron Letters, 2017, 58(37): 3598-3601.

DOI：10.1016/j.tetlet.2017.07.091

• Iridium(III) complexes
• Organic light-emitting diodes
• Phosphorescence
• Structure-property relationships
• Triazole derivatives

A novel and highly efficient thiophenquinolone-based red iridium(III) complex bearing a bulky fluorophenyl moiety is designed and synthesized. The complex shows intensive red phosphorescence (596 nm with shoulder at 642 nm), high photoluminescence efficiency (0.62) and broad full width at half maximum (81 nm). The bulky fluorophenyl moiety introduced into the complex could improve the efficiency of electroluminescence with the maximum current efficiency, power efficiency and the external quantum efficiency up to 29.0 cd/A, 30.41m/W and 17.6% due to the effective steric hindrance in solid states.

• 出版日期2017-9-13
• 单位太原理工大学; 南京邮电大学