Anchoring of fluorophores to plasma-chemically modified polymer surfaces and the effect of cucurbit[6]uril on dye emission.
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 cucurbit[6]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.
Hoffmann
Katrin
K
Bundesanstalt für Materialforschung und -prüfung, Richard-Willstaetter-Str. 11, 12489, Berlin, Germany.
Mix
Renate
R
Friedrich
Joerg F
JF
Buschmann
Hans-J
HJ
Resch-Genger
Ute
U