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通过对传统高效蓝色磷光铱配合物二[2-(2,4-二氟苯基)吡啶-N,C2](2-吡啶甲酸)合铱(FIr Pic)的辅助配体进行修饰,得到了含载流子基团(三苯胺和口恶二唑)的蓝色磷光铱配合物FIr(G-Pic),其中G-Pic是含有载流子基团的吡啶甲酸衍生物,其结构通过核磁共振氢谱、碳谱和元素分析进行了表征.这些新型蓝色磷光铱配合物的热稳定性质、电化学性质和光物理性质研究表明,以非共轭方式在Fir Pic的辅助配体上引入载流子基团,对其发光光谱影响不大,它们在溶液中的最大发射峰为472 nm;但是对铱配合物的电化学性质有一定影响,它们的HOMO和LUMO能级均有约0.1 e V的提升;同时,铱配合物的热稳定性也进一步提升,其热分解温度均大于250℃.
The accessory ligand of iridium (FIr Pic), a bis (2- picolyl) pyridine-N, C2] (2-picolinate) The blue phosphorescent iridium complex FIr (G-Pic) containing a carrier group (triphenylamine and oxadiazole), wherein G-Pic is a picolinic acid derivative containing a carrier group, has a structure represented by 1H NMR, C-NMR and elemental analysis. Studies on the thermal stability, electrochemical properties and photophysical properties of these novel blue phosphorescent iridium complexes have shown that incorporation of a non-conjugated ligand into the auxiliary ligand of Fir Pic Carrier groups had little effect on their luminescence spectra, and their maximum emission peak in solution was 472 nm. However, the electrochemical properties of Iridium complexes were affected. Their HOMO and LUMO levels were about 0.1 eV increase; the same time, the thermal stability of the iridium complex is further enhanced, the thermal decomposition temperature is greater than 250 ℃.