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Authors
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Hoffmann, F. ; Wolff, T. ; Minko, S. ; Stamm, M.
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Title
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Photochemical structuring and fixing of structures in binary polymer brush layers via 2p+2p photodimerization
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Date
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07.02.2005
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Number
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12071
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Abstract
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Binary polymer brushes grafted to Si wafers were prepared from hydrophilic and hydrophobic polymer components, which allow switching the surface properties (as revealed by contact angles) by exposure to varying solvents. The hydrophilic component was poly-2-vinylpyridine; the hydrophobic component was a copolymer of styrene and 2-(4-vinylphenyl)indene containing the photodimerizable phenylindene chromophore. The brushes were prepared via thermal and via<br /> photochemical grafting-to methods, which led to distinct layer thicknesses. Structural patterns differing in surface properties were produced and fixed via crosslinking the hydrophobic component by <a name="mml17"></a><a style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6WHR-4DS94FG-B&_mathId=mml17&_cdi=6857&_rdoc=1&_ArticleListID=432780722&_acct=C000050221&_version=1&_userid=10&md5=3bd4c048ca0b6183456b61a71df78a73" title="Click to view the MathML source">2<i>π</i>+2<i>π</i></a> photodimerization of phenylindene moieties. The patterns were visually observable.
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Publisher
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Journal of Colloid and Interface Science
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Wikidata
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Citation
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Journal of Colloid and Interface Science 282 (2005) 349-358
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DOI
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https://doi.org/10.1016/j.jcis.2004.08.169
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Tags
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polymer brushes photochemical grafting-to photocrosslinking photodimerization surface microstructures switchable surface properties photo-cross-linking viscometric data surfaces chains films
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