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Related Experiment Video

Updated: Jun 21, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Dual-controlled nanoparticles exhibiting AND logic.

Sarah Angelos1, Ying-Wei Yang, Niveen M Khashab

  • 1Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, California 90095, USA.

Journal of the American Chemical Society
|July 24, 2009
PubMed
Summary

Dual-controlled nanoparticles (DCNPs) combine light-responsive nanoimpellers and pH-responsive nanovalves for sophisticated molecular release. This dual control system functions as an AND logic gate, enabling precise guest molecule delivery.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Chemical Engineering

Background:

  • Mesoporous silica nanoparticles offer versatile platforms for drug delivery.
  • Controlling molecular release from nanoparticles is crucial for targeted therapies.
  • Integrating multiple stimuli-responsive systems enhances control over release kinetics.

Purpose of the Study:

  • To develop dual-controlled nanoparticles (DCNPs) integrating light- and pH-responsive molecular machines.
  • To investigate the independent and combined functionalities of nanoimpellers and nanovalves for guest molecule release.
  • To engineer a sophisticated AND logic gate system for precise control over molecular release.

Main Methods:

  • Synthesis of DCNPs by functionalizing mesoporous silica nanoparticles with azobenzene-based nanoimpellers and [2]pseudorotaxane-based nanovalves.

Related Experiment Videos

Last Updated: Jun 21, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

  • Characterization of nanoparticle structure and the responsive behavior of integrated molecular machines.
  • Evaluation of guest molecule release kinetics under varying light and pH conditions.

    • Main Results:

    • Successful integration of light-responsive nanoimpellers and pH-responsive nanovalves onto mesoporous silica nanoparticles.
    • Demonstration of independent control over guest molecule release using light or pH stimuli.
    • Establishment of an AND logic gate behavior, requiring both light and pH triggers for significant molecule release.

    Conclusions:

    • DCNPs provide a robust platform for advanced molecular release control.
    • The AND logic gate functionality enables highly specific and conditional delivery of guest molecules.
    • This approach holds promise for developing sophisticated drug delivery systems and smart materials.