Advertisement

Photoswitchable Supramolecular Hydrogels Formed by Cyclodextrins and Azobenzene Polymers

Authors

  • Dr. Shingo Tamesue,

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043 (Japan), Fax: (+81) 6-6850-5445
    Search for more papers by this author
  • Dr. Yoshinori Takashima,

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043 (Japan), Fax: (+81) 6-6850-5445
    Search for more papers by this author
  • Dr. Hiroyasu Yamaguchi,

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043 (Japan), Fax: (+81) 6-6850-5445
    Search for more papers by this author
  • Prof. Dr. Seiji Shinkai,

    1. Institute of Systems, Information Technologies and Nanotechnologies (ISIT) (Japan)
    Search for more papers by this author
  • Prof. Dr. Akira Harada

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043 (Japan), Fax: (+81) 6-6850-5445
    2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST)
    Search for more papers by this author

  • This research was supported by the CREST project, Japan Science and Technology Agency. S.T. appreciates a JSPS fellowship from MEXT of Japan. The authors thank Seiji Adachi (Osaka University) for his helpful advice on the measurement of 2D NOESY spectra.

Abstract

original image

Shine a light: A supramolecular hydrogel is formed by the glucan curdlan equipped with α-cyclodextrins (CD-CUR) and azobenzene-modified poly(acrylic acid)(pAC12Azo). The sol–gel transition and the morphology of the supramolecular hydrogel can be switched by photoirradiation at the appropriate wavelength, which controls the formation of an inclusion complex between the α-cyclodextrins and the azobenzene moieties (see picture).

Ancillary