Chemosensor properties of 7-hydroxycoumarin substituted cyclotriphosphazenes
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Authors: | Gnül YENLMEZ FT Sergen YILMAZ Nagihan BAYIK Elif ENKUYTU Esra Nur KAYA Mahmut DURMU Mustafa BULUT |
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Institution: | 1. Department of Chemistry, Faculty of Science, Gebze Technical University, Gebze, Kocaeli, Turkey ; 2. Department of Chemistry, Faculty of Art and Science, Marmara University, Kadıköy, İstanbul, Turkey |
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Abstract: | The newly synthesized cyclotriphosphazene cored coumarin chemosensors 5, 6, and 7 were successfully characterized by 1 H NMR, 31 P NMR, and MALDI-TOF mass spectrometry. Additionally, the photophysical and metal sensing properties of the targeted compounds were determined by fluorescence spectroscopy in the presence of various metals (Li + , Na + , K + , Cs + , Mg 2+ , Ca 2+ , Ba 2+ , Cr 3+ , Mn 2+ , Fe 3+ , Co 2+ , Al 3+ , Hg + , Cu 2+ , Zn 2+ , Ag + , and Cd 2+ ) . The fluorescence titration results showed that compounds 5, 6, and 7 could be employed as fluorescent chemosensors for Fe 3+ ions with high sensitivity. The complex stoichiometry between final cyclotriphosphazene chemosensors and Fe 3+ ions was also determined by Job’s plots. |
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Keywords: | Cyclotriphosphazene coumarin fluorescent chemosensor aqueous media |
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