Two platinum(<scp>ii</scp>) complexes with a 4-phenyl-4<i>H</i>-1,2,4-triazole derivative as an ancillary ligand for efficient green OLEDs
作者:Guang-Zhao Lu、Zhen-Long Tu、Liang Liu、You-Xuan Zheng、Yue Zhao
DOI:10.1039/c8dt04750b
日期:——
Two new cyclometalated platinum(II) complexes ((TN3T)Pt(dptp), (4tfmppy)Pt(dptp)) with 2′,6′-bis(trifluoromethyl)-2,3′-bipyridine (TN3T) and 4-trifluoromethylphenylpyridine (4tfmppy) as the cyclometalated ligands and the nitrogen heterocycle 2-(4,5-diphenyl-4H-1,2,4-triazol-3-yl)phenol (dptp) as the ancillary ligand were developed. Both complexes are green phosphors with high photoluminescence quantum
两个具有2',6'-双(三氟甲基)-2,3'-联吡啶(TN 3 T)的新型环金属化铂(II)配合物((TN 3 T)Pt(dptp),(4tfmppy)Pt(dptp))并开发了作为环金属化配体的4-三氟甲基苯基吡啶(4tfmppy)和作为辅助配体的氮杂环2-(4,5-二苯基-4 H -1,2,4-三唑-3-基)苯酚(dptp)。这两种复合物的绿色荧光体具有高的光致发光量子效率的产率(λ最大= 532纳米,Φ p = 65%(TN 3 T)的Pt(DPTP)和λ最大= 502纳米,Φ p分别在室温下在CH 2 Cl 2溶液中的(4tfmppy)Pt(dptp))= 71%。具有良好性能的具有单发射层和双发射层结构的有机发光二极管(OLED)被制造出来。特别地,基于具有6wt%的掺杂浓度的复合(4tfmppy)Pt(dptp)的双发射层器件D2显示出优异的性能,具有26.90%的最大EQE,