Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 220, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201800537
Keywords
co-solvency; fluorescent polymers; polymer brushes; solvent responsiveness
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Funding
- University of Twente
- MESA+Institute for Nanotechnology
- 4TU.High-Tech Materials research program: 'New Horizons in designer materials'
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Herein is described the switchable fluorescence response of poly(methyl methacrylate) (PMMA) brushes. Chain end fluorescein labeled PMMA brushes are prepared by combining surface-initiated atom transfer radical polymerization (SI-ATRP) with a copper-catalyzed alkyne-azide cycloaddition (CuAAC) click reaction. Successful attachment of fluorescein is confirmed by measuring fluorescence of the as-prepared films. Utilizing co-solvency of PMMA in isopropanol-water mixtures, responsive behavior of the end-functionalized brushes is demonstrated by measuring the changes in fluorescence intensity between the swollen and collapsed states.
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