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Quantification of surface functional groups on polymer microspheres by supramolecular host-guest interactions
Authors:Hennig Andreas  Hoffmann Angelika  Borcherding Heike  Thiele Thomas  Schedler Uwe  Resch-Genger Ute
Institution:BAM-Federal Institute for Materials Research and Testing, Richard-Willst?tter-Stra?e 11, D-12489 Berlin, Germany. andreas.hennig@bam.de
Abstract:We introduce a method to determine the number of accessible functional groups on a polymer microsphere surface based on the interaction between the macrocyclic host cucurbit7]uril (CB7) and a guest reacted to the microsphere surface. After centrifugation, CB7 in the supernatant is quantified by addition of a fluorescent dye. The difference between added and detected CB7 affords the number of accessible surface functional groups.
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