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以聚芴为主链,通过Suzuki偶联反应合成了一类新型侧链含环金属铱配合物的芴-咔唑有机磷光聚合物PFCzIrpiq,通过凝胶渗透色谱仪测定其分子量,通过核磁共振氢谱表征化学结构,研究了聚合物的光电性能。以该聚合物为发光层制备结构为ITO/PEDOT:PSS(50 nm)/PFCzIrpiq(45 nm)/LiF(0.5 nm)/Al(150 nm)的器件,测试了器件的电致发光性能。结果表明,在聚合物单体中铱配合物单元摩尔投料比对聚合物的发光颜色影响较大:当铱配合物单元摩尔投料比为1%时聚合物器件的色坐标为(0.22,0.22),位于蓝光区域;当增大到5%时聚合物器件色坐标为(0.65,0.35),位于红光区域;随着铱配合物单元摩尔投料比的增大,器件的启亮电压变化较小,而器件的电流密度逐渐减小,器件的最大发光亮度逐渐增大。当铱配合物单元摩尔投料比为5%时,器件的最大发光亮度为48 cd/m2。
A new type of fluorene-carbazole organic phosphorescent polymer, PFCzIrpiq, was synthesized by Suzuki coupling reaction with polyfluorene as the main chain. The molecular weight was measured by gel permeation chromatography and determined by 1H NMR Spectra were used to characterize the chemical structure and the photoelectric properties of the polymer were investigated. The electroluminescent performance of the device was tested by using the polymer as the light-emitting layer to prepare a device with the structure of ITO / PEDOT: PSS (50 nm) / PFCzIrpiq (45 nm) / LiF (0.5 nm) / Al (150 nm) The results show that the molar charge ratio of iridium complex units in polymer monomer has a great influence on the luminescent color of polymer: the color coordinate of polymer device is (0.22,0.22) when the mole ratio of iridium complex unit is 1% , Located in the blue region. The color coordinate of the polymer device was (0.65,0.35) in the red region when it was increased to 5%. With the increase of molar feed ratio of iridium complex units, , And the current density of the device is gradually reduced, the maximum luminous brightness of the device is gradually increased. When the mole ratio of Iridium complex unit is 5%, the maximum brightness of the device is 48 cd / m2.