为了提高铱配合物材料的溶解性，同时具有较高的热稳定性，将正丙基环己烷引入到配体中合成了一种新型结构的红色磷光铱(III)配合物Ir(pcpiq)2acac (pcpiq=1-［4-(4-丙基环己基)苯基］异喹啉，acac=乙酰丙酮负离子)。通过紫外-可见光吸收光谱、荧光发射光谱、循环伏安测试和差热扫描分析对其光学性能、电化学性能和热稳定性进行了研究。以其作为发光材料，按照4~12%的掺杂浓度，分别以真空蒸镀和溶液旋涂工艺制备了有机电致发光器件(OLED)。结果显示，以Alq3为主体的蒸镀工艺制备的器件，EL光谱发射峰位于639 nm，亮度达到5 987 cd/m2，10 V电压时电流效率和功率效率分别为6.11 cd/A和1.64 lm/W，器件发出了较纯正的红光，其色坐标位于(0.68,0.32)。

In order to improve the solubility of iridium complex, at the same time exhibit high thermal stability, propylcydohexane was introduced into the main ligand to synthesize a novel red phosphorescent iridium(III) complexe Ir(pcpiq)2acac (pcpiq = 1-(4-(4- propylcyclohexyl)phenyl)isoquinoline, acac = acetylacetonate).The photophysical, thermal, and electrochemical properties of the material were investigated by UV-Vis absorption spectra, fluorescence emission spectra, differential scanning calorimetry (DSC) and cyclic voltammetric method. Additionally, the synthesized iridium(III) complex was used as a red light-emitting dopant material with 4~12% doping concentration in emissive layer to fabricate organic light-emitting diodes (OLED) by vacuum deposition or spin-coating method. The test results showed that the OLED by vacuum deposition obtained an electroluminescence (EL) maximum at 639 nm, a maximum current efficiency of 6.11 cd/A, a maximum power efficiency of 164 lm/W, and a pure red color with the CIE coordinates of (0.68, 0.32), when Alq3 was used as the host material.