Action of a Fluorescent Chemosensor for Cu2+ Encapsulated in Silica Xerogel |
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Authors: | K Kledzik R Ostaszewski |
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Institution: | (1) Faculty of Chemistry, University of Gda sk, ul, Sobieskiego 18, 80-952 Gda sk, Poland |
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Abstract: | The fluorescent chemosensor of the type Ant-NH-O-O-NH-Ant for Cu2+ ions has been designed by means of a supramolecular approach, as follows: two anthracene (Ant) fragments as fluorophore subunits have been linked by a noncyclic NH-O-O-NH quadridentate ligand as a receptor. The interaction of Cu2+ - receptor is signalled through the enhancement of the anthracene fluorescence when the receptor, i.e., the dioxodiamine chain subunit of the sensor is able to stop a photoinduced electron-transfer mechanism. The experiments with the chemosensor encapsulated in silica xerogel by the sol-gel processing are described. |
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Keywords: | fluorescent chemosensor silica xerogel Cu2+ ions fluorescence enhancement |
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