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- W2005672907 abstract "We report an ion imprinted mesoporous silica based fluorescence turn-on sensor array for discrimination of metal ions. A novel fluorescent functional monomer containing an 8-hydroxyquinoline (8-HQ) moiety in combination with one-pot co-condensation method was employed to prepare fluorescent ion imprinted mesoporous silica. The imprinted materials for Zn(2+) and Cd(2+) as well as a control blank non-imprinted material (NIM) were synthesized. With the covalently anchored organic fluorophore in the inorganic mesoporous silica matrix, the binding of metal ions to the imprinting site was directly transformed into fluorescence signals. Both the imprinted materials displayed faster binding kinetics toward metal ions than NIM. Apparent binding constants (adsorption constants) for the materials with the metal ions in water were determined by a Langmuir-type analysis of the spectrofluorimetric titration data. The sensor array composed of the three materials allows discriminating the two template metal ions (Zn(2+) and Cd(2+)) plus three non-template metal ions (Mg(2+), Ca(2+) and Al(3+)) at two different concentrations. This work proves that using a simple fluorescent receptor can provide a pattern based fluorescent sensing system by taking advantage of the imprinting effect." @default.
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- W2005672907 date "2009-07-01" @default.
- W2005672907 modified "2023-09-23" @default.
- W2005672907 title "A fluorescent sensor array based on ion imprinted mesoporous silica" @default.
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- W2005672907 doi "https://doi.org/10.1016/j.bios.2009.04.024" @default.
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