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Related Experiment Videos

Stable and robust polymer nanotubes stretched from polymersomes.

Joseph E Reiner1, Jeffrey M Wells, Rani B Kishore

  • 1Physics Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899-8424, USA.

Proceedings of the National Academy of Sciences of the United States of America
|January 25, 2006
PubMed
Summary
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Researchers created robust polymer nanotubes from polymersomes using optical tweezers or micropipettes. These nanotubes, with aqueous cores, are promising for nanofluidics and biotechnology applications.

Area of Science:

  • Biotechnology
  • Materials Science
  • Nanotechnology

Background:

  • Polymersomes are self-assembled vesicles formed from amphiphilic block copolymers.
  • Creating stable, functional nanostructures from polymersomes is challenging.

Purpose of the Study:

  • To develop a method for fabricating long, robust polymer nanotubes from polymersomes.
  • To explore the potential applications of these polymer nanotubes in nanofluidics and biotechnology.

Main Methods:

  • Directly pulling the membrane of polymersomes using optical tweezers or a micropipette to form nanotubes.
  • Stabilizing the pulled nanotubes through chemical cross-linking.
  • Demonstrating network formation of polymer nanotubes and polymersomes via optical manipulation.

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Main Results:

  • Successfully created long polymer nanotubes with an aqueous core connected to the polymersome interior.
  • Achieved stabilization of nanotubes via chemical cross-linking, resulting in extreme robustness.
  • Demonstrated the ability to manipulate and form networks of these polymer nanotubes and polymersomes.

Conclusions:

  • The developed method provides a robust way to create polymer nanotubes.
  • The aqueous core and robustness make these polymer nanotubes suitable for nanofluidics and biotechnology.