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Issue 22, 2017
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2-Hydroxy-naphthyl functionalized mesoporous silica for fluorescence sensing and removal of aluminum ions

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Abstract

Mesoporous silica functionalized with a 2-hydroxy-naphthyl moiety has been synthesized and characterized by standard techniques like powder X-ray diffraction, N2 adsorption/desorption studies, transmission electron microscopy and spectral studies like FT-IR, UV-visible, fluorescence and 13C and 29Si solid state NMR. The functionalized silica material showed significant enhancement in its emission intensity in the presence of Al3+ ions whereas other metal ions could not bring about any increase in its emission intensity. They either quench the emission or do not alter the intensity significantly making the functionalized material a fluorescence chemosensor for Al3+. The sensitivity of the probe towards Al3+ has been determined to be high with a low limit of detection value. As functionalized silica is not soluble in common solvents, it has been effectively used to bind and remove Al3+ from a solution. Theoretical calculations on a model system have been performed to investigate the electronic spectral transitions.

Graphical abstract: 2-Hydroxy-naphthyl functionalized mesoporous silica for fluorescence sensing and removal of aluminum ions

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Publication details

The article was received on 31 Jan 2017, accepted on 14 May 2017 and first published on 15 May 2017


Article type: Paper
DOI: 10.1039/C7DT00369B
Citation: Dalton Trans., 2017,46, 7317-7326
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    2-Hydroxy-naphthyl functionalized mesoporous silica for fluorescence sensing and removal of aluminum ions

    T. Das, A. Roy, H. Uyama, P. Roy and M. Nandi, Dalton Trans., 2017, 46, 7317
    DOI: 10.1039/C7DT00369B

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