| 一种新型红色三线态喹喔啉铱(Ⅲ)配合物的合成及发光性质 |
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| 引用本文： | 张国林,郭海清,啜玉涛,邹德春.一种新型红色三线态喹喔啉铱(Ⅲ)配合物的合成及发光性质[J].化学学报,2005,63(2):143-147. |
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| 作者姓名： | 张国林 郭海清 啜玉涛 邹德春 |
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| 作者单位： | 北京大学化学与分子工程学院,稀土材料化学及应用国家重点实验室,北京,100871;北京大学化学与分子工程学院,高分子科学与工程系,北京,100871 |
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| 基金项目： | 国家 863 计划(No. 2002AA324080)，973 计划(No.2002CB613405)，国家自然科学基金(Nos. 50125310，90101013)资助项目. |
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| 摘 要： | 利用2,3-二苯基喹喔啉和水合三氯化铱(IrCl3?H2O)反应, 合成了一种新型喹喔啉铱的配合物Ir(DPQ)2(acac)], 通过元素分析, 1H NMR和HRMS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的吸收光谱和光致发光光谱进行了研究. 利用该材料作为磷光材料制备了结构为ITO/NPB(30 nm)/NPB∶7% Ir(DPQ)2(acac)(25 nm)/PBD (10 nm)/Alq3 (30 nm)/Mg∶Ag (10∶1)(120 nm)/Ag(10 nm)] 的电致发光器件, 研究了其电致发光光谱. 结果表明, 配合物Ir(DPQ)2(acac)]在476和625 nm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; 发光光谱结果显示, 在660 nm处有较强的金属配合物三重态的磷光发射; 电致发光光谱显示, 该器件的启动电压是4.25 V, 器件的最大亮度为4910 cd/m2, 外量子效率为5.14%, 器件的流明效率为1.12 lm/W, 是一种新型红色磷光材料.
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| 关 键 词： | 磷光材料 重金属配合物 三重态 喹喔啉铱(Ⅲ) OLED |
| 收稿时间： | 2004-5-11 |
| 修稿时间： | 2004-9-22 |
Synthesis and Luminescence of a New Red Triplet Iridium Quinoxaline Complex |
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| ZHANG,Guo-Lina GUO,Hai-Qing,a CHUAI,Yu-Taob ZOU,De-Chun,b.Synthesis and Luminescence of a New Red Triplet Iridium Quinoxaline Complex[J].Acta Chimica Sinica,2005,63(2):143-147. |
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| Authors: | ZHANG Guo-Lina GUO Hai-Qing a CHUAI Yu-Taob ZOU De-Chun b |
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| Institution: | (State Key Laboratory of Rare Earth Materials Chemistry and Applications, Department of Polymer Science andEngineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871) |
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| Abstract: | A new iridium quinoxaline complex, Ir(DPQ)2(acac)] (DPQ＝2,3-diphenylquinoxaline, acac＝acetoacetone) was synthesized by reaction of 2,3-diphenylquinoxaline with iridium trichloride hydrate. The complex was characterized by elemental analysis, 1H NMR, and mass spectroscopy. The UV-vis absorption and photoluminescence of the complex were investigated. The complex shows strong 1MLCT (singlet metal to ligand charge-transfer) and 3MLCT (triplet metal to ligand charge-transfer) absorption at 476 and 625 nm, respectively. Organic light emitting diodes (OLED) with a configuration of ITO/NPB (30 nm)/NPB∶7% Ir(DPQ)2(acac)(25 nm)/PBD (10 nm)/Alq3 (30 nm)/Mg∶Ag (10∶1)(120 nm)/Ag(10 nm)] were fabricated by using this complex as the triplet emissive dopant in NPB. The diodes showed an external quantum efficiency of 5.14% at 7.25 V and brightness of 4910 cd/m2 at 17.25 V. The power efficiency of the device was 1.12 lm/W at 6.0 V, indicating that this complex is a promising electrophosphorescent material. |
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| Keywords: | photoluminescence heavy metal complex triplet iridium quinoxaline OLED |
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