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A Triarylboron-Based Fluorescent Thermometer: Sensitive Over a Wide Temperature Range

Authors

  • Jiao Feng,

    1. Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Kaijun Tian,

    1. Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Dehui Hu,

    1. Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Dr. Shuangqing Wang,

    1. Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Dr. Shayu Li,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
    • Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Dr. Yi Zeng,

    1. Key Laboratory of Photochemical Conversion and Optoelectronic, Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Prof. Dr. Yi Li,

    Corresponding author
    1. Key Laboratory of Photochemical Conversion and Optoelectronic, Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
    • Key Laboratory of Photochemical Conversion and Optoelectronic, Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • Prof. Dr. Guoqiang Yang

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
    • Beijing National Laboratory for Molecular Sciences, Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)
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  • We acknowledge the National Natural Science Foundation of China (grant nos. 20703049, 20733007, 20873165, 50973118), the National Basic Research Program (2007CB808004, 2009CB930802), and Chinese Academy of Sciences.

Abstract

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Kühles Grün, heißes Blau: Ein Triarylboran luminesziert über einen weiten Temperaturbereich (−50 bis +100 °C) mit hoher Quantenausbeute (≥0.64), wobei die Farbe mit steigender Temperatur von Grün nach Blau wechselt (siehe Bild). Die Lumineszenzfarbe wird durch die Besetzung zweier angeregter Zustände mit verschiedenen Konformationen bestimmt – ein lokal angeregter Zustand bei hoher und ein verdrillter Zustand mit intramolekularem Ladungstransfer bei tiefer Temperatur.

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