一种环金属铱、铂双核配合物的合成及光电性能

Synthesis and Photoelectric Properties of a Cyclometalated Iridium-Platinum Binuclear Complex

设计合成了一种双核环金属铱,铂配合物二[N,N-2-（2,4-二氟苯基吡啶）C3,N1]（吡啶甲酸）合铱（Ⅲ）-C6-[苯基吡啶-C3,N1]（吡啶甲酸）合铂（Ⅱ）（FIr PPy Pt）。通过核磁共振仪、元素分析仪、紫外-可见吸收光谱仪和光致发光光谱仪对其结构和性能进行了表征。结果表明,配合物FIr PPy Pt的紫外-可见吸收位于250~450 nm之间,荧光发射峰位于465和493 nm。将配合物FIr PPy Pt以质量分数1%~8%掺杂到主体材料聚乙烯基咔唑（PVK）＋2-（联苯-4-芳基）-5-（4-叔丁基苯）-1,3,4-噁二唑（PBD）（30%）中制作了电致发光器件,在不同电压下电致发光光谱中,显现出铱配合物和铂配合物的特征峰,波峰位于400、500和530 nm蓝绿光区发射区。该双核配合物用于单掺杂有机白光电致发光器件具有制作简单、色稳定性和重复性好等特点,为单掺杂白光发光器件提供了一种好的思路。

A dinuclear cyclometalated iridium-platinum complex Iridium [Ⅲ]bis [（ 2,4-difluorophenyl）-pyridinato-N,C2＇][ picolinate]-C6-Paltinum[II][phenylpyridinato-N,C2＇][picolinate ]（ FIr PPy Pt） was designed and synthesized. Its structure and properties were characterized by NMR,elemental analyzer,UV absorption spectroscopy and photoluminescence spectroscopy. The results show that the UV absorption of the complex FIr PPy Pt is located between 250 and 450 nm,and the fluorescence emission peak is located at 465 and 493 nm. The electroluminescent devices were made from poly（ N-vinylcarbazole）（ PVK） ＋ 2-（ biphenyl-4-yl）-5-（ 4-tert-butylphenyl）-1,3,4-oxadiazole（ PBD） doped with 1% ~ 8% mass fraction of FIr PPy Pt complexes. The electroluminescence spectra at different voltages show the characteristic peaks of iridium complexes and platinum complexes located at 400,500 and 530 nm in blue-green emission zones. The dual core complexes are used for single doped organic white light emitting devices with simple fabrication,good color stability and good reproducibility,it provides a good idea for the single doped white light emitting devices.