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Synthesis, Crystal Structure and Photoluminescence of a Cyclometalated Iridium(III) Coumarin Complex

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Abstract

In this paper a new cyclometalated iridium(III) coumarin complex, Ir(III)bis(3-(2-benzothiazolyl)coumarinato N,C4)(acetylacetonate) (Ir(L)2(acac)), was synthesized and characterized. X-ray crystallography demonstrated that the iridium(III) ion is hexacoordinated by two C atoms and two N atoms from 3-(2-benzothiazolyl)coumarinato ligands and two O atoms from acac ligand, displaying distorted octahedral coordination geometry. The Ir(L)2(acac) complex has good thermal stability with less than 2 % weight-reduction occurring at 300 °C, and exhibits strong reddish orange emission. The results shown that Ir(L)2(acac) is useful for fabrication organic light-emitting diodes.

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Acknowledgments

This work was supported by the National Natural Science Foundations of China (61166003 and 60776006), and also supported by the Program for Changjiang Scholars and Innovative Research Team in University (IRT0629).

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Authors and Affiliations

  1. Key Laboratory of Opto-Electronic Technology and Intelligent Control (Ministry of Education), Lanzhou Jiaotong University, Lanzhou, 730070, China

    Tianzhi Yu, Chengcheng Zhang, Peng Liu & Duowang Fan

  2. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China

    Chengcheng Zhang, Yuling Zhao, ShaoQiang Guo, Peng Liu & Wentao Li

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  1. Tianzhi Yu
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  2. Chengcheng Zhang
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  3. Yuling Zhao
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  4. ShaoQiang Guo
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  5. Peng Liu
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  6. Wentao Li
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  7. Duowang Fan
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Correspondence to Tianzhi Yu.

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Supplementary material

The crystallographic data (excluding structure factors) of Ir(L)2(pic) had been deposited with the Cambridge Crystallographic Center as supplementary publication no. CCDC 917825.

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Yu, T., Zhang, C., Zhao, Y. et al. Synthesis, Crystal Structure and Photoluminescence of a Cyclometalated Iridium(III) Coumarin Complex. J Fluoresc 23, 777–783 (2013). https://doi.org/10.1007/s10895-013-1214-x

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  • DOI: https://doi.org/10.1007/s10895-013-1214-x

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