Highly Selective Fluorescence Turn-On Sensor for Fluoride Detection

    Authors

    B. L. Sui; B. Kim; Y. W. Zhang; A. Frazer;K. D. Belfield

    Comments

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    Abbreviated Journal Title

    ACS Appl. Mater. Interfaces

    Keywords

    fluoride; fluorescence sensor; fluorene; triazolium; fluoride detection; anion sensor; ANION RECOGNITION; HYDROGEN-BONDS; AQUEOUS-MEDIA; PROTON-TRANSFER; RECEPTORS; BINDING; CHEMOSENSOR; IONS; OSTEOPOROSIS; DERIVATIVES; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary

    Abstract

    Through click chemistry, triazole and triazolium groups have been explored to recognize anions through C-H center dot center dot center dot A(-) hydrogen-bonding complexion. Herein, we demonstrate evidence of fluoride-induced deprotonation of a C-H bond and its application in fluoride detection. The combination of fluorene and triazolium units produced a highly selective fluorescence turn-on prototype sensor for fluoride. The interactions between the C H bond and F- were studied by fluorescence spectroscopy and H-1 NMR titrations. Test papers were prepared to detect fluoride in aqueous media at concentrations down to 1.9 ppm, important for estimating whether the fluoride concentration in drinking water is at a safe level.

    Journal Title

    Acs Applied Materials & Interfaces

    Volume

    5

    Issue/Number

    8

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    2920

    Last Page

    2923

    WOS Identifier

    WOS:000318205000015

    ISSN

    1944-8244

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