Studying the photophysical properties of a polymerizable 1,8‐naphthalimide dye and its copolymer with styrene as potential fluorescent sensors for metal cations |
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| Authors: | Ivo Grabchev Stephane Dumas Jean‐Marc Chovelon |
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| Affiliation: | 1. Institute of Polymers, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria;2. Institut de Recherche sur la catalyse et d'Environnement de Lyon, IRCELYON, UMR‐CNRS 5256, Université Lyon 1, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France |
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| Abstract: | The photophysical characteristics of a polymerizable 1,8‐naphthalimide dye and its copolymer with styrene have been investigated. The functional properties of both low and high molecular weight fluorophores in the presence of different metal cations have been discussed with regard to their potential application as fluorosensors for the metal cations and protons. In acetonitrile solution the monomeric 1,8‐naphthalimide enhances its fluorescence emission in the presence of metal cations (Zn2+, Fe3+, Co2+, Pb2+, Cu2+, Ni2+, and Mn2+). In aqueous media the poly(St‐co‐MD) exhibits a selective response to Fe3+ cations. The monomeric and polymeric fluorophores also exhibit a considerable increase in their fluorescence intensity at acidic pH values (pH < 6) which suggest that they could be used as ON–OFF probes in analytical devices for signaling the presence of protons. Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | green fluorescent polymers 1,8‐naphthalimide sensors metal cations protons environment |
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