基于氟代苯并咪唑配体的绿光铱配合物的合成与表征

doi:10.3724/SP.J.1095.2014.40050

摘要/Abstract

摘要： 基于一种氟代的配体2-(4′-氟苯基)-1-苯基-苯并咪唑，在高温(＞200 ℃)条件下直接合成了经式绿光铱配合物mer-Ir(FPBI)3，并通过1H NMR和单晶X射线衍射分析确定了其经式构型。不同于以前报道的具有经式构型的铱配合物(＜0.1)，mer-Ir(FPBI)3在甲苯溶液中的光致发光量子效率高达0.46。应用该配合物制备了高效磷光有机电致发光器件，最大电流效率和外量子效率分别为38.5 cd/A和11.8%，色坐标为(0.29,0.58)。

关键词: 经式构型, 铱配合物, 光致发光量子效率, 磷光有机电致发光器件

Abstract: On the basis of a fluorinated ligand, namely 2-(4′-fluorophenyl)-1-phenyl-benzoimidazole, a green-emitting iridium complex mer-Ir(FPBI)3 with meridional configuration has been successfully synthesized under a temperature higher than 200 ℃, which is confirmed by both 1H NMR and single crystal X-ray diffraction analysis. Different from previously-reported meridional iridium complexes(＜0.1), noticeably, mer-Ir(FPBI)3 shows a photoluminescent quantum yield as high as 0.46. Therefore, highly efficient phosphorescent organic light-emitting diodes(PhOLEDs) are realized by tuning the doping concentration of mer-Ir(FPBI)3 into 4,4′-N,N′-dicarbazolebiphenyl(CBP), revealing a maximum current efficiency of 38.5 cd/A(11.8%) with the corresponding Commission Internationale de L′Eclairage(CIE) coordinates of (0.29, 0.58).

Key words: meridional configuration, iridium complex, photoluminescent quantum yield, phosphorescent organic light-emitting diodes

中图分类号:

O641.1

吕剑虹, 马志华, 丁军桥, 王利祥. 基于氟代苯并咪唑配体的绿光铱配合物的合成与表征[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.40050.

LV Jianhong1,2, MA Zhihua1, DING Junqiao1*, WANG Lixiang1*. Synthesis and Characterization of a Green-Emitting Iridium Complex Based on Fluorinated Benzoimidazole Ligand[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.40050.

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