Anchoring of Fluorophores to Plasma-chemically Modified Polymer Surfaces and the Effect of Cucurbit[6]uril on Dye Emission |
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Authors: | Katrin Hoffmann Renate Mix Joerg F Friedrich Hans-J Buschmann Ute Resch-Genger |
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Institution: | (1) Bundesanstalt für Materialforschung und –prüfung, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany;(2) Deutsches Textilforschungszentrum Nord-West e.V., Adlerstr. 1, 47798 Krefeld, Germany |
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Abstract: | Polypropylene supports were functionalized by plasma-deposition of polymeric allylamine layers. The surface amino groups generated
were wet-chemically reacted with xanthene dyes resulting in fluorescent polymer films. The effect of polymer-attachment of
the dyes on their emission features was studied fluorometrically and different methods were tested to improve the fluorescence
properties of the films. Modification with cucurbit6]uril (CB6) yields a moderately enhanced fluorescence as well as an improved
photostability. The observed effect is most likely due to CB6-induced rigidization of the linker molecules which seems to
reduce fluorescence quenching dye–dye and fluorophore–surface interactions. |
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Keywords: | Fluorescence Cucurbituril Surface modification Plasma functionalization Polymer surface Xanthene dyes |
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