Functionalized Nanoporous Thin Films and Fibers from Photocleavable Block Copolymers Featuring Activated Esters

A series of poly(pentafluorophenyl (methyl)acrylates)-block-poly(ethylene oxide) with o-nitrobenzyl ester photocleavable junctions (PPFP(M)A-hv-PEO) were synthesized by RAFT polymerization. The block copolymers were used to fabricate thin films and fibers by spin-coating and electrospinning, respect...

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Bibliographic Details
Published in:Macromolecules 2013-07, Vol.46 (13), p.5195-5201
Main Authors: Zhao, Hui, Gu, Weiyin, Thielke, Michael W, Sterner, Elizabeth, Tsai, Tsunghan, Russell, Thomas P, Coughlin, E. Bryan, Theato, Patrick
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:A series of poly(pentafluorophenyl (methyl)acrylates)-block-poly(ethylene oxide) with o-nitrobenzyl ester photocleavable junctions (PPFP(M)A-hv-PEO) were synthesized by RAFT polymerization. The block copolymers were used to fabricate thin films and fibers by spin-coating and electrospinning, respectively. After solvent annealing, UV exposure, and washing with methanol/water to remove the minor PEO block, nanoporous structures were obtained. Both the porous thin films and fibers remained reactive to amine substitution of the pentafluorophenyl esters under mild conditions, which was confirmed by XPS, fluorescence confocal microscopy, FT-IR, and contact angle measurements.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma400659h