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Binding of the cationic fluorophore Auramine-0 to neutral and charged poly(vinylbenzo-18-crown-6) in water

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Summary

The cationic fluorophore Auramine-0 strongly interacts with poly(vinylbenzo-18-crown-6), a polymer which in water behaves as a typical polysoap. The intrinsic binding constant at 25°C was found to be 2.2 × 104 M−1. The binding can be modified by adding crown ether-complexable cations such as K+ or Cs+. Complexation converts the neutral polycrown ether into a polycation causing repulsion of the cationic fluorophore and a decrease in the observed fluorescence. There is some indication that the

cation of the dye specifically interacts with a crown ligand.

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Authors and Affiliations

  1. Polymer Research Institute, Chemistry Department, College of Environmental Science and Forestry, State University of New York, 13210, Syracuse, NY, USA

    Keiichi Kimura, Kam-han Wong & Johannes Smid

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  1. Keiichi Kimura
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  2. Kam-han Wong
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  3. Johannes Smid
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Kimura, K., Wong, Kh. & Smid, J. Binding of the cationic fluorophore Auramine-0 to neutral and charged poly(vinylbenzo-18-crown-6) in water. Polymer Bulletin 6, 395–399 (1982). https://doi.org/10.1007/BF00959849

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  • DOI: https://doi.org/10.1007/BF00959849

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