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Synthesis and Photophysical Properties of New Highly Conjugated Bispyrylium Compounds

Authors

  • Wei-Tao Gong,

    Corresponding author
    • State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, People's Republic of China
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  • Xiao-min Qian,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, People's Republic of China
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  • Fu-Rui Wang,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, People's Republic of China
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  • Yuan Lin,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, People's Republic of China
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  • Gui-Ling Ning

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, People's Republic of China
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  • Contract grant sponsor: Scientific Research Foundation for the Returned Overseas Chinese Scholars.

  • Contract grant number: 1000-082109.

  • Contract grant sponsor: Fundamental Research Funds for the Central Universities.

  • Contract grant number: DUT11LK13.

  • Contract grant sponsor: National Science Foundation of China.

  • Contract grant number: 21206016.

Correspondence to: Wei-tao Gong; e-mail: wtgong@dlut.edu.cn.

ABSTRACT

New highly conjugated bispyryliums were synthesized by the Knoevenagel reaction between α-CH3 pyrylium and aromatic dicarboxaldehydes. Their photophysical properties were fully investigated. The results showed that they exhibited a tunable fluorescence emission colors ranging from green to red in solution by changing the properties of connecting π bridges. The experimental results were also supported by theoretical calculations. In addition, their fluorescence emission in solid state was also investigated preliminarily. © 2012 Wiley Periodicals, Inc. Heteroatom Chem 24:66–71, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/hc.21064

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