Local Switching of Chemical Patterns through Light-Triggered Unfolding of Creased Hydrogel Surfaces

Visible light induces switching of surface chemical patterns based on hybrid gels of thermally responsive poly(N‐isopropyl acrylamide) copolymer networks containing iron oxide nanoparticles. The swelling of these hybrid gels is reduced upon illumination (see picture), allowing controlled unfolding o...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2012-07, Vol.51 (29), p.7146-7149
Main Authors: Yoon, Jinhwan, Bian, Pei, Kim, Jungwook, McCarthy, Thomas J., Hayward, Ryan C.
Format: Article
Language:English
Subjects:
Copolymers
dynamic chemical patterns
Gels
Hydrogels
Illumination
Instability
Iron oxides
micropatterns
Nanoparticles
optical switching
responsive gels
Swelling
Switching
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Summary:Visible light induces switching of surface chemical patterns based on hybrid gels of thermally responsive poly(N‐isopropyl acrylamide) copolymer networks containing iron oxide nanoparticles. The swelling of these hybrid gels is reduced upon illumination (see picture), allowing controlled unfolding of creased features formed owing to an elastic surface instability.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201202692