【摘要】 利用2,3-二苯基喹喔啉和氯亚铂酸钾(K2PtCl4)反应,合成了一种新型喹喔啉铂的配合物(DPQ)Pt(acac),通过元素分析,1HNMR测定对配合物结构进行了表征,结果显示得到的是目标化合物.利用紫外光谱和荧光光谱对配合物进行了研究.利用该材料作为磷光染料制备了结构为ITO/NPB(21nm)/NPB∶7%(DPQ)Pt(acac)(17.5nm)/BCP(7nm)/Alq3(21nm)/Mg∶Ag(10∶1)(120nm)/Ag(10nm)的有机电致发光器件(OLED).结果表明,该配合物在442和485nm处存在单重态1MLCT(金属到配体的电荷跃迁)和三重态3MLCT的吸收峰;在632nm处有较强的金属配合物三重态的磷光发射;该器件的启动电压是5.0V,器件的最大亮度为1516cd·m-2,外量子效率为0.66%,流明效率为0.26lm·W-1,是一种红色磷光材料.更多还原

【Abstract】 The synthesis and luminescence study of a new platinum quinoxaline complex are reported. The complex, [(DPQ)Pt(acac)](DPQ=2, 3-diphenylquinoxaline, acac=2, 4-pentanedione) was synthesized by reaction of 2, 3-diphenylquinoxaline with K2PtCl4 and shows strong 1MLCT (singlet metal to ligand charge-transfer) and 3MLCT (triplet metal to ligand charge-transfer) absorption at 442 and 485 nm, respectively. Organic light emitting diode (OLED) with a configuration of [ITO/NPB(21 nm) /NPB∶7% (DPQ)Pt(acac)(17.5 nm) /BCP(7 nm)/ Alq3(21 nm)/ Mg∶Ag(10∶1)(120 nm)/Ag(10 nm)] (ITO: indium tin oxide; NPB: 4, 4′-bis[N-(1-naphthyl)-N-phenyl-amino] biphenyl; BCP: 2, 9-dimethyl-4, 7-diphenyl-1, 10-phenanthroline; Alq3: tris(8-hydroxyquinoline) aluminum) shows a red emission at 632 nm with an external quantum efficiency of 0.66% at 7.2 V and brightness of 1516 cd·m-2 at 21 V. The power efficiency of the device was 0. 26 lm·W-1 at 7.2 V.更多还原