Highly efficient bluish green organic light-emitting diodes of iridium(<scp>iii</scp>) complexes with low efficiency roll-off
作者:Ning Su、Zheng-Guang Wu、You-Xuan Zheng
DOI:10.1039/c8dt00952j
日期:——
Two novel iridium(III) complexes Ir(BTBP)2mepzpy and Ir(BTBP)2phpzpy were successfully synthesized, in which 2′,6′-bis(trifluoromethyl)-2,4′-bipyridine (BTBP) was used as the main ligand, and 2-(3-methyl-1H-pyrazol-5-yl)pyridine (mepzpy) and 2-(3-2-(3-phenyl-1H-pyrazol-5-yl))pyridine (phpzpy) were introduced as the ancillary ligands, respectively. Both Ir(III) complexes displayed bluish green emission
成功合成了两种新颖的铱(III)配合物Ir(BTBP)2 mepzpy和Ir(BTBP)2 phpzpy,其中2',6'-双(三氟甲基)-2,4'-联吡啶(BTBP)被用作化合物。主配体和2-(3-甲基-1 H-吡唑-5-基)吡啶(mepzpy)和2-(3-2-(3-苯基-1 H-吡唑-5-基))吡啶(phpzpy分别被引入作为辅助配体。两种Ir(III)配合物在486和487 nm处均显示出蓝绿色的发射峰,分别具有0.73和0.69的高量子效率。具有ITO / HATCN(六氮杂三亚苯基六甲腈,5 nm)/ TAPC(双[4-(N,N-二糖基氨基)-苯基]环己烷,40 nm)/ Ir(BTBP)2 mepzpy或Ir(BTBP)2 phpzpy(10 wt%):2,6-DCzPPy(2,6-bis(3-(9 H -咔唑-9-基)苯基)吡啶,10 nm)/ TmPyPB(1,3,5-三[(3-吡啶基)-苯基-3-基]苯,30