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Photoswitchable gel assembly based on molecular recognition

Author

Listed:
  • Hiroyasu Yamaguchi

    (Graduate School of Science, Osaka University, Toyonaka)

  • Yuichiro Kobayashi

    (Graduate School of Science, Osaka University, Toyonaka)

  • Ryosuke Kobayashi

    (Graduate School of Science, Osaka University, Toyonaka)

  • Yoshinori Takashima

    (Graduate School of Science, Osaka University, Toyonaka)

  • Akihito Hashidzume

    (Graduate School of Science, Osaka University, Toyonaka)

  • Akira Harada

    (Graduate School of Science, Osaka University, Toyonaka
    Japan Science and Technology Agency (JST), Core Research for Evolutional Science and Technology (CREST), Chiyoda-ku)

Abstract

The formation of effective and precise linkages in bottom-up or top-down processes is important for the development of self-assembled materials. Self-assembly through molecular recognition events is a powerful tool for producing functionalized materials. Photoresponsive molecular recognition systems can permit the creation of photoregulated self-assembled macroscopic objects. Here we demonstrate that macroscopic gel assembly can be highly regulated through photoisomerization of an azobenzene moiety that interacts differently with two host molecules. A photoregulated gel assembly system is developed using polyacrylamide-based hydrogels functionalized with azobenzene (guest) or cyclodextrin (host) moieties. Reversible adhesion and dissociation of the host gel from the guest gel may be controlled by photoirradiation. The differential affinities of α-cyclodextrin or β-cyclodextrin for the trans-azobenzene and cis-azobenzene are employed in the construction of a photoswitchable gel assembly system.

Suggested Citation

  • Hiroyasu Yamaguchi & Yuichiro Kobayashi & Ryosuke Kobayashi & Yoshinori Takashima & Akihito Hashidzume & Akira Harada, 2012. "Photoswitchable gel assembly based on molecular recognition," Nature Communications, Nature, vol. 3(1), pages 1-5, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1617
    DOI: 10.1038/ncomms1617
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    Cited by:

    1. Changyong Cai & Shuanggen Wu & Yunfei Zhang & Fenfang Li & Zhijian Tan & Shengyi Dong, 2024. "Bulk transparent supramolecular glass enabled by host–guest molecular recognition," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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