Solvatochromic Pyrene Analogues of Prodan Exhibiting Extremely High Fluorescence Quantum Yields in Apolar and Polar Solvents

Authors

  • Yosuke Niko,

    1. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Tokyo 152-8552 (Japan), Fax: (+81) 3-5734-2321
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  • Dr. Susumu Kawauchi,

    1. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Tokyo 152-8552 (Japan), Fax: (+81) 3-5734-2321
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  • Prof. Dr. Gen-ichi Konishi

    Corresponding author
    1. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Tokyo 152-8552 (Japan), Fax: (+81) 3-5734-2321
    2. PRESTO (Japan) Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012 (Japan)
    • Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Ookayama, Tokyo 152-8552 (Japan), Fax: (+81) 3-5734-2321
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Abstract

original image

True colors: Novel pyrene analogues of Prodan exhibit outstanding photophysical properties with remarkably high fluorescence quantum yield (QY) in solvents ranging from apolar hexane to polar methanol (see figure). This is accompanied by strong solvatochromism and large Stokes shifts. These properties have not been previously achieved in enormous solvatochromic dyes, but are quite useful for emitting materials and imaging tools.

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