Diarylated Bi(thieno[2,3-c]thiophene)s: A Ring-Fusing Strategy for Controlling the Molecular Alignment of Oligoarenes

Authors

  • Dr. Aiko Fukazawa,

    Corresponding author
    1. Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan)
    • Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan)

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  • Daisuke Kishi,

    1. Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan)
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  • Yuki Tanaka,

    1. Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan)
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  • Prof. Dr. Shu Seki,

    1. Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0781 (Japan)
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  • Prof. Dr. Shigehiro Yamaguchi

    Corresponding author
    1. Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan)
    2. Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, and CREST (Japan) Science and Technology Agency (JST), Furo, Chikusa, Nagoya 464-8602 (Japan)
    • Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602 (Japan)

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  • This research was partly supported by a Grant-in-Aid (No. 19675001) from MEXT (Japan) (S.Y.), JST, CREST (S.Y.), and JST, ACT-C (A.F.).

Abstract

original image

Red means go: The dense π stacking of thiophene-fused bithiophene derivatives in the crystalline state led to significantly red-shifted absorption and fluorescence bands (see the photograph of one compound in solution and in the solid state under UV irradiation). The π-stacking structure could be altered by changing the orientation of one of the fused thiophene rings.

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