| 1,3,4-噁二唑环金属配体的磷光型铱阳离子配合物:溶剂相关的激发态动力学研究 |
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| 引用本文： | 匡卓然,王娴,王振,何桂营,郭前进,何磊,夏安东.1,3,4-噁二唑环金属配体的磷光型铱阳离子配合物:溶剂相关的激发态动力学研究[J].化学物理学报,2017,30(3):259-267. |
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| 作者姓名： | 匡卓然 王娴 王振 何桂营 郭前进 何磊 夏安东 |
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| 作者单位： | 中国科学院化学研究所, 北京分子科学国家实验室, 光化学重点实验室, 北京 100190;中国科学院大学, 北京 100049,中国科学院化学研究所, 北京分子科学国家实验室, 光化学重点实验室, 北京 100190;中国科学院大学, 北京 100049,中南大学化学化工学院, 长沙 410083,中国科学院化学研究所, 北京分子科学国家实验室, 光化学重点实验室, 北京 100190;中国科学院大学, 北京 100049,中国科学院化学研究所, 北京分子科学国家实验室, 光化学重点实验室, 北京 100190,中南大学化学化工学院, 长沙 410083,中国科学院化学研究所, 北京分子科学国家实验室, 光化学重点实验室, 北京 100190;中国科学院大学, 北京 100049 |
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| 基金项目： | This work is supported by the National Basic Research Program of China (No.2013CB834604),the National Natural Foundation of China (No.21673252,No.21333012,No.21373232,and No.51403240) and the Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB12020200). |
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| 摘 要： | To elucidate the nature of low-lying triplet states and the effect of ligand modifications on the excited-state properties of functional cationic iridium complexes,the solventdependent excited-state dynamics of two phosphorescent cationic iridium (III) complexes,namelyIr (dph-oxd)2(bpy)]PF6(1) andIr (dph-oxd)2(pzpy)]PF6(2),were investigated by femtosecond and nanosecond transient absorption spectroscopy.Upon photoexcitation to the metal-to-ligand charge-transfer (MLCT) states,the excited-state dynamics shows a rapid process (τ=0.7-3 ps) for the formation of solvent stabilized 3MLCT states,which significantly depends on the solvent polarity for both 1 and 2.Sequentially,a relatively slow process assigned to the vibrational cooling/geometrical relaxation and a long-lived phosphorescent emissive state is identified.Due to the different excited-state electronic structures regulated by ancillary ligands,the solvation-induced stabilization of the 3MLCT state in 1 is faster than that in 2.The present results provide a better sight of excited-state relaxation dynamics of ligand-related iridium (III) complexes and solvation effects on triplet manifolds.
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| 收稿时间： | 2017/3/29 0:00:00 |
| 修稿时间： | 2017/5/16 0:00:00 |
Phosphorescent Cationic Iridium (III) Complexes with 1,3,4-Oxadiazole Cyclometalating Ligands:Solvent-Dependent Excited-State Dynamics |
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| Zhuoran Kuang,Xian Wang,Zhen Wang,Guiying He,Qianjin Guo,Lei He and Andong Xia.Phosphorescent Cationic Iridium (III) Complexes with 1,3,4-Oxadiazole Cyclometalating Ligands:Solvent-Dependent Excited-State Dynamics[J].Chinese Journal of Chemical Physics,2017,30(3):259-267. |
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| Authors: | Zhuoran Kuang Xian Wang Zhen Wang Guiying He Qianjin Guo Lei He and Andong Xia |
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| Institution: | Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China,Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China,Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China,Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China and Beijing National Laboratory for Molecular Sciences(BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | |
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| Keywords: | Iridium complex Phosphorescence Metal-to-ligand charge transfer Transient absorption Solvation |
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