| 一种吡嗪铱(Ⅲ)配合物的晶体结构及光物理性质 |
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| 引用本文： | 韦传东,葛国平,李春艳,雷克微,梁洪泽,禹钢,刘志伟.一种吡嗪铱(Ⅲ)配合物的晶体结构及光物理性质[J].物理化学学报,2015,31(1):17-22. |
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| 作者姓名： | 韦传东 葛国平 李春艳 雷克微 梁洪泽 禹钢 刘志伟 |
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| 作者单位： | 1. State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang Province, P. R. China;
2. State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China |
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| 基金项目： | 宁波市自然科学基金(2010A610164, 2010A610187), 宁波市重大择优委托项目(2012C5002)和宁波大学王宽城基金资助 |
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| 摘 要： | 合成了一种铱配合物二(4,4''-二氟-5-甲基-2,3-二苯基吡嗪) (乙酰丙酮)合铱(MDPPF)2Ir(acac)]的有机电致发光器件(OLED),利用X射线单晶衍射仪测定了该化合物的晶体结构. 利用紫外-可见吸收光谱、发射光谱对其光物理性质进行研究. 结果表明: (MDPPF)2Ir(acac)的单晶结构属于三斜晶系, P1空间群,晶胞参数a=1.13984(3) nm, b=1.26718(3) nm, c=1.29541(3) nm, α=93.7181(19)°, β=101.638(2)°, γ=110.853(3)°, V=1.69336(7) nm3; (MDPPF)2Ir(acac)在二氯甲烷溶液中的发射峰为555 nm. 以(MDPPF)2Ir(acac)为客体材料,制备了结构为ITO/NPB(40 nm)/CBP: (MDPPF)2Ir(acac)(20 nm)/TPBi(10 nm)/Alq3 (30 nm)/LiF(1 nm)/Al(100 nm)的一系列不同掺杂浓度器件, 器件的发射峰位于558 nm, 最大亮度达到32700 cd·m-2,最大电流效率44.3 cd·A-1, 最大功率效率20.7 lm·W-1.
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| 关 键 词： | 铱(Ⅲ)配合物 吡嗪 磷光材料 有机电致发光器件 |
| 收稿时间： | 2014-10-23 |
| 修稿时间： | 2014-11-21 |
Crystal Structure and Photophysical Properties of an Iridium(Ⅲ) Pyrazine Complex |
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| WEI Chuan-Dong,GE Guo-Ping,LI Chun-Yan,LEI Ke-Wei,LIANG Hong-Ze,YU Gang,LIU Zhi-Wei.Crystal Structure and Photophysical Properties of an Iridium(Ⅲ) Pyrazine Complex[J].Acta Physico-Chimica Sinica,2015,31(1):17-22. |
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| Authors: | WEI Chuan-Dong GE Guo-Ping LI Chun-Yan LEI Ke-Wei LIANG Hong-Ze YU Gang LIU Zhi-Wei |
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| Institution: | 1. State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang Province, P. R. China;
2. State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China |
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| Abstract: | An iridium(Ⅲ) complex of (MDPPF)2Ir(acac) (MDPPF=4,4''-difluoro-5-methyl-2,3-diphenylpyrazine, acac=acetylacetone) has been prepared and characterized by X-ray single crystal diffraction. The photophysical properties of (MDPPF)2Ir(acac) were investigated using UV-Vis spectroscopy and photoluminescence (PL) techniques. X-ray diffraction (XRD) studies revealed that the complex belongs to a triclinic systemof the P1 space group with cell dimensions a=1.13984(3) nm, b=1.26718(3) nm, c=1.29541(3) nm, α=93.7181(19)°, β= 101.638(2)°, γ=110.853(3)° and V=1.69336(7) nm3.Asolution of the (MDPPF)2Ir(acac) complex in dichloromethane was found to emit yellowlight with amaximumpeak at 555 nmat roomtemperature. Furthermore, (MDPPF)2Ir(acac) was used as a phosphorescence dopant in organic light-emitting diodes (OLEDs) with the structures of ITO/NPB (40 nm)/CBP:(MDPPF)2Ir(acac) (20 nm)/TPBi (10 nm)/Alq3 (30 nm)/LiF (1 nm)/Al (100 nm). These devices showed yellowemission at 558 nm, a maximumbrightness of 32700 cd·m-2, current efficiency of 44.7 cd·A-1 and power efficiency of 20.7 lm·W-1. |
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| Keywords: | Iridium(Ⅲ) complex Pyrazine Phosphorescent material Organic light-emitting diode |
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