A Rapid Aqueous Fluoride Ion Sensor with Dual Output Modes

Authors

  • Rui Hu,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 10-8261-7315
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  • Jiao Feng,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 10-8261-7315
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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), Fax: (+86) 10-8261-7315
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  • Shuangqing Wang Dr.,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 10-8261-7315
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  • Shayu Li Dr.,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 10-8261-7315
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  • Yi Li Prof. Dr.,

    1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 10-8254-3518
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  • Guoqiang Yang Prof. Dr.

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China), Fax: (+86) 10-8261-7315
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  • We are grateful for funding from the National Natural Science Foundation of China (grant nos. 20703049, 20733007, 20873165, and 50973118) and the National Basic Research Program (2007CB808004 and 2009CB930802).

Abstract

original image

The color purple: A siloxy-functionalized benzamide (see picture) is a highly efficient fluoride ion sensor in water. The sensor, which is activated when the O[BOND]Si bond is cleaved by fluoride ions, provides two independent modes for signal recognition. In colorimetric mode, the fluoride ion concentration is transformed into a fluorescence signal that can be observed directly with the naked eye.

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