| 螺芴对含三齿磷配体的铱配合物光电性能的影响 |
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| 引用本文： | 陈熳,王月,周跃跃,王平,童碧海,冯敏强,王松.螺芴对含三齿磷配体的铱配合物光电性能的影响[J].无机化学学报,2020,36(3):494-502. |
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| 作者姓名： | 陈熳 王月 周跃跃 王平 童碧海 冯敏强 王松 |
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| 作者单位： | 安徽工业大学冶金工程学院, 分子工程与应用化学研究中心, 冶金减排与资源综合利用教育部重点实验室, 马鞍山 243002,安徽工业大学冶金工程学院, 分子工程与应用化学研究中心, 冶金减排与资源综合利用教育部重点实验室, 马鞍山 243002,安徽工业大学冶金工程学院, 分子工程与应用化学研究中心, 冶金减排与资源综合利用教育部重点实验室, 马鞍山 243002,安徽工业大学冶金工程学院, 分子工程与应用化学研究中心, 冶金减排与资源综合利用教育部重点实验室, 马鞍山 243002,安徽工业大学冶金工程学院, 分子工程与应用化学研究中心, 冶金减排与资源综合利用教育部重点实验室, 马鞍山 243002,1 安徽工业大学冶金工程学院, 分子工程与应用化学研究中心, 冶金减排与资源综合利用教育部重点实验室, 马鞍山 243002;苏州大学功能纳米与软物质研究院, 苏州大学纳米协同创新中心, 江苏省碳基功能材料重点实验室, 苏州 215123,湖北文理学院, 湖北省低维光电材料与器件重点实验室, 襄阳 441053 |
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| 基金项目： | 国家自然科学基金（No.21572001）资助项目 |
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| 摘 要： | 合成了一种含4,5-二氮-9,9-螺二芴(sb)配体的三齿磷铱配合物Ir(tpit)(sb)Cl(tpitH2=亚磷酸三苯基酯),通过核磁共振氢谱和磷谱及高分辨质谱对其结构进行了确定。X射线单晶衍射分析表明,sb配体的存在扭曲了分子结构,有助于降低分子聚集及发光淬灭。与存在分子内π-π堆积的模型配合物Ir(tpit)(bpy)Cl(bpy=2,2′-联吡啶)对比进行了光电性能的研究。结果表明在聚甲基丙烯酸甲酯(质量分数1%)中配合物Ir(tpit)(sb)Cl的发光波长为512 nm,相对配合物Ir(tpit)(bpy)Cl的波长(520 nm)有了8 nm蓝移。配合物Ir(tpit)(sb)Cl的发光量子效率为30%,与配合物Ir(tpit)(bpy)Cl的94%相比有明显降低,说明了分子内π-π堆积作用在降低柔性基团非辐射跃迁率方面的重要作用。基于配合物Ir(tpit)(sb)Cl的有机电致发光器件,最大电流效率和外量子效率分别为14 cd·A-1和4.5%。而由于分子内π-π堆积作用,基于配合物Ir(tpit)(bpy)Cl器件的最大电流效率和外量子效率分别高达60 cd·A-1和18.2%。
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| 关 键 词： | 环金属铱(Ⅲ)髥配合物 三齿磷配体 有机电致发光 磷光 螺芴 |
| 收稿时间： | 2019/5/30 0:00:00 |
| 修稿时间： | 2019/12/3 0:00:00 |
Influence of Spirofluorene on Photoelectric Properties of Iridium Complexes Containing Tridentate Phosphite Ligands |
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| CHEN Man,WANG Yue,ZHOU Yue-Yue,WANG Ping,TONG Bi-Hai,FUNG Man-Keung and WANG Song.Influence of Spirofluorene on Photoelectric Properties of Iridium Complexes Containing Tridentate Phosphite Ligands[J].Chinese Journal of Inorganic Chemistry,2020,36(3):494-502. |
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| Authors: | CHEN Man WANG Yue ZHOU Yue-Yue WANG Ping TONG Bi-Hai FUNG Man-Keung and WANG Song |
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| Institution: | Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China,Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China,Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China,Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China,Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China,1 Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Institute of Molecular Engineering and Applied Chemistry, School of Metallurgy Engineering, Anhui University of Technology, Maanshan, Anhui 243002, China;Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials(FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China and Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, Hubei 441053, China |
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| Abstract: | A cyclometalated iridium(Ⅲ)complex Ir(tpit)(sb)Cl(tpitH2=triphenyl phosphite)containing 4,5-diazo-9,9-spirobifluorene(sb)ligand was successfully synthesized and characterized by NMR spectroscopy and high resolution mass spectrometry.X-ray single crystal diffraction analysis showed that the existence of sb ligand distorted the structure of complex,which is beneficial for reducing the molecular aggregation and luminescent quenching.The photoelectric properties of complex Ir(tpit)(sb)Cl has been studied in comparison with those of the model complex Ir(tpit)(bpy)Cl(bpy=2,2′-bipyridine)existing intramolecularπ-πstacking.The results show that the luminescence wavelength of complex Ir(tpit)(sb)Cl in polymethyl methacrylate(mass fraction 1%)was 512 nm,and had a blue shift of 8 nm compared to that of complex Ir(tpit)(bpy)Cl(520 nm).The quantum efficiency of the complex Ir(tpit)(sb)Cl was 30%,which is significantly lower than that of the complex Ir(tpit)(bpy)Cl(94%),indicating the radiative transition rate is reduced by spirofluorene.Based on the complex Ir(tpit)(sb)Cl,the maximum current efficiency and external quantum efficiency of OLED device are 14 cd·A-1 and 4.5%,respectively.The maximum current efficiency and external quantum efficiency of Ir(tpit)(bpy)Cl-based device are up to 60 cd·A-1 and 18.2%,respectively.CCDC:1812631. |
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| Keywords: | cyclometalated iridium(Ⅲ)complex tridentate phosphite ligand organic electroluminescence phosphorescence spirofluorene |
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