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高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (4): 686-689.doi: 10.1007/s40242-013-3005-y

• Articles • 上一篇    下一篇

Synthesis and Luminescent Properties of Iridium Complexes with Reduced Concentration Quenching Effect

ZHANG Li-ying1, LI Bin2, WANG Jian-xing1   

  1. 1. College of Science, Henan University of Technology, Zhengzhou 450001, P. R. China;
    2. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, P. R. China
  • 收稿日期:2013-01-06 修回日期:2013-03-18 出版日期:2013-08-01 发布日期:2013-07-15
  • 通讯作者: ZHANG Li-ying E-mail:zhangly1103@yahoo.com.cn
  • 基金资助:

    Supported by the Basic Research Foundation of Henan University of Technology, China(No.11JCYJ17) and the Science Foundation of Henan University of Technology, China(No.2009BS036).

Synthesis and Luminescent Properties of Iridium Complexes with Reduced Concentration Quenching Effect

ZHANG Li-ying1, LI Bin2, WANG Jian-xing1   

  1. 1. College of Science, Henan University of Technology, Zhengzhou 450001, P. R. China;
    2. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, P. R. China
  • Received:2013-01-06 Revised:2013-03-18 Online:2013-08-01 Published:2013-07-15
  • Contact: ZHANG Li-ying E-mail:zhangly1103@yahoo.com.cn
  • Supported by:

    Supported by the Basic Research Foundation of Henan University of Technology, China(No.11JCYJ17) and the Science Foundation of Henan University of Technology, China(No.2009BS036).

摘要：

Three novel cyclometalated ligands 1-benzyl-2-phenyl-1H-benzoimidazole(BPBM), 1-(4-methoxy-benzyl)-2-(4-methoxy-phenyl)-1H-benzoimidazole(MBMPB) and 4-[2-(4-dimethylamino-phenyl)-benzoinidazol-1-ylmethyl]-phenyl-dimethyl-amine(DBPA) were designed and synthesized, and the corresponding highly efficiency green-emitting phosphorescent iridium complexes Ir(BPBM)2(acac)(1), Ir(MBMPB)2(acac)(2) and Ir(DPBA)2(acac) (3) with acetylacetone(acac) as auxiliary ligand were also synthesized. The ligands are functionalized by bulky non-planarity substituents, thus the phosphorescent concentration quenching is substantially suppressed, and all the complexes exhibit bright photoluminescence(PL) in solid state. The photo-physical properties of the three iridium complexes were researched in detail. The results indicate that they have potential application in fabricating non-doped electrophosphorescence device.

关键词: Green-emitting, Iridium complex, Bulky non-planarity substituent

Abstract:

Three novel cyclometalated ligands 1-benzyl-2-phenyl-1H-benzoimidazole(BPBM), 1-(4-methoxy-benzyl)-2-(4-methoxy-phenyl)-1H-benzoimidazole(MBMPB) and 4-[2-(4-dimethylamino-phenyl)-benzoinidazol-1-ylmethyl]-phenyl-dimethyl-amine(DBPA) were designed and synthesized, and the corresponding highly efficiency green-emitting phosphorescent iridium complexes Ir(BPBM)2(acac)(1), Ir(MBMPB)2(acac)(2) and Ir(DPBA)2(acac) (3) with acetylacetone(acac) as auxiliary ligand were also synthesized. The ligands are functionalized by bulky non-planarity substituents, thus the phosphorescent concentration quenching is substantially suppressed, and all the complexes exhibit bright photoluminescence(PL) in solid state. The photo-physical properties of the three iridium complexes were researched in detail. The results indicate that they have potential application in fabricating non-doped electrophosphorescence device.

Key words: Green-emitting, Iridium complex, Bulky non-planarity substituent