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Poly(γ-glutamic acid) hydrogels with water-sensitive luminescence derived from aggregation-induced emission of o -carborane

Macromolecules, ISSN: 0024-9297, Vol: 43, Issue: 15, Page: 6463-6468
2010
  • 93
    Citations
  • 0
    Usage
  • 33
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    93
    • Citation Indexes
      93
  • Captures
    33

Article Description

We demonstrate the synthesis of a novel diglycidyl compound exhibiting aggregation-induced emission (AIE) derived from o-carborane, and employed it as a cross-linking reagent to prepare translucent hydrogels consisting of poly(γ-glutamic acid). Swelling ratio of the obtained hydrogels depended on the cross-linking density. Higher cross-linking density of the obtained hydrogels led to stronger emission in the swollen state, and finally the absolute quantum yield reached 0.10, which is directed to that of cross-linker with AIE in water dispersion (φ = 0.19). The luminescence character of lower cross-linked hydrogels was drastically influenced by the gel-shrinkage from the change of ionic strength. Furthermore, these hydrogels showed effective reversible fluorescence switching between the swollen and dried states. © 2010 American Chemical Society.

Bibliographic Details

Kenta Kokado; Atsushi Nagai; Yoshiki Chujo

American Chemical Society (ACS)

Chemistry; Materials Science

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