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Issue 17, 2008
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Photoluminescence and ion sensing properties of a bipyridyl chromophore-modified semifluorinated polymer and its metallopolymer derivatives

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Abstract

A difluorovinylene aromatic ether polymer (P1) incorporating periodic 5,5′-distyryl-2,2′-bipyridyl units as metal chelating chromophores was prepared by a transition metal-free step-growth polymerization. P1 displays strong ionochromic and ionoluminescent effects in response to transition metals. Although significant emission quenching is observed upon exposure to most transition metal ions, bathochromically shifted emission is observed upon addition of divalent d10 ions (Zn2+, Cd2+ and Hg2+). A selective 10-fold increase in integrated emission intensity is observed upon addition of Zn2+ to P1. The Zn2+-P1 metallopolymer acts as a ratiometric fluorescent indicator selective for fluoride anions, and the Cu2+-P1 metallopolymer exhibits a striking turn-on fluorescence response (>100-fold increase in integrated intensity) selective for cyanide and fluoride anions.

Graphical abstract: Photoluminescence and ion sensing properties of a bipyridyl chromophore-modified semifluorinated polymer and its metallopolymer derivatives

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Publication details

The article was received on 03 Sep 2007, accepted on 07 Feb 2008, published on 03 Mar 2008 and first published online on 03 Mar 2008


Article type: Paper
DOI: 10.1039/B713458D
Citation: J. Mater. Chem., 2008,18, 1970-1976
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    Photoluminescence and ion sensing properties of a bipyridyl chromophore-modified semifluorinated polymer and its metallopolymer derivatives

    S. He, S. T. Iacono, S. M. Budy, A. E. Dennis, D. W. Smith and R. C. Smith, J. Mater. Chem., 2008, 18, 1970
    DOI: 10.1039/B713458D

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