Photo-induced anomalous deformation of poly(N-isopropylacrylamide) gel hybridized with an inorganic nanosheet liquid crystal aligned by electric field

Takumi Inadomi, Shogo Ikeda, Yasushi Okumura, Hirotsugu Kikuchi, Nobuyoshi Miyamoto

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Poly-(N-isopropylacrylamide) (PNIPA) hydrogel films doped with uniaxially aligned liquid crystalline (LC) nanosheets adsorbed with a dye are synthesized and its anomalous photothermal deformation is demonstrated. The alignment of the nanosheet LC at the cm-scale is easily achieved by the application of an in-plane or out-of-plane AC electric field during photo-polymerization. A photoresponsive pattern is printable onto the gel with μm-scale resolution by adsorption of the dye through a pattern-holed silicone rubber. When the gel is irradiated with light, only the colored part is photothermally deformed. Interestingly, the photo-irradiated gel shows temporal expansion along one direction followed by anisotropic shrinkage, which is an anomalous behavior for a conventional PNIPA gel. (Figure Presented).

Original languageEnglish
Pages (from-to)1741-1746
Number of pages6
JournalMacromolecular rapid communications
Volume35
Issue number20
DOIs
Publication statusPublished - Oct 1 2014

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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