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Tuneable enhancement of the salt and thermal stability of polymeric micelles by cyclized amphiphiles

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  • Satoshi Honda

    (Tokyo Institute of Technology)

  • Takuya Yamamoto

    (Tokyo Institute of Technology)

  • Yasuyuki Tezuka

    (Tokyo Institute of Technology)

Abstract

Cyclic molecules provide better stability for their aggregates. Typically in nature, the unique cyclic cell membrane lipids allow thermophilic archaea to inhabit extreme conditions. By mimicking the biological design, the robustness of self-assembled synthetic nanostructures is expected to be improved. Here we report topology effects by cyclized polymeric amphiphiles against their linear counterparts, demonstrating a drastic enhancement in the thermal, as well as salt stability of self-assembled micelles. Furthermore, through coassembly of the linear and cyclic amphiphiles, the stability was successfully tuned for a wide range of temperatures and salt concentrations. The enhanced thermal/salt stability was exploited in a halogen exchange reaction to stimulate the catalytic activity. The mechanism for the enhancement was also investigated. These topology effects by the cyclic amphiphiles offer unprecedented opportunities in polymer materials design unattainable by traditional means.

Suggested Citation

  • Satoshi Honda & Takuya Yamamoto & Yasuyuki Tezuka, 2013. "Tuneable enhancement of the salt and thermal stability of polymeric micelles by cyclized amphiphiles," Nature Communications, Nature, vol. 4(1), pages 1-9, June.
  • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2585
    DOI: 10.1038/ncomms2585
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