Photoresponsive hydrogel sheets composed of spiropyran-functionalized poly(N-isopropylacrylamide)

András Szilágyi, Kimio Sumaru, Shinji Sugiura, Toshiyuki Takagi, Toshiyuki Kanamori, Toshio Shinbo, Miklós Zrínyi

Research output: Contribution to conferencePaper

Abstract

We prepared novel polymer hydrogel sheets composed of thermo-responsive pNIPAAm main chain and photo-resnposive side chains of spiropyran. The drastic photo-induced dehydration was observed in 0.5 mM HCl aq. at 28°C, and photo-induced micro-relief formation was demonstrated. As a result, it was observed that the 5 sec irradiation of blue light induced the color bleaching firstly, and the hydrogel started to shrink. The thickness of the hydrogel sheet decreased to the half of the original thickness in the following 8 min and then returned to the former state 2.5 hours later in the irradiated region, while no significant change was observed in the unirradiated region.

Original languageEnglish
Pages4565-4566
Number of pages2
Publication statusPublished - Dec 1 2006
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: Sep 20 2006Sep 22 2006

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period9/20/069/22/06

Keywords

  • Hydrogel
  • Photoresponse
  • pNIPAAm
  • Spiropyran

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Szilágyi, A., Sumaru, K., Sugiura, S., Takagi, T., Kanamori, T., Shinbo, T., & Zrínyi, M. (2006). Photoresponsive hydrogel sheets composed of spiropyran-functionalized poly(N-isopropylacrylamide). 4565-4566. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.