Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 18, Issue 10, Pages 1501-1508Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200800017
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We present a novel method to produce bioactive surface patterns whose size can be changed in response to a variation of the environmental conditions, rather than local treatment. Our approach is based on the structured surface-immobilization of thermoresponsive poly (N-isopropylacrylamide) (PNIPAM) polymer chains with different transition temperatures. We experimentally demonstrate how the size of an area in which a particular polymer is collapsed or swollen can be controlled by ambient temperature. We show the temperature-induced size-control of a bioactive surface pattern by embedding functional motor proteins into the switchable polymer layers.
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