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Photoconductance and inverse photoconductance in films of functionalized metal nanoparticles

Author

Listed:
  • Hideyuki Nakanishi

    (Department of Chemistry,
    Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA)

  • Kyle J. M. Bishop

    (Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA)

  • Bartlomiej Kowalczyk

    (Department of Chemistry,
    Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA)

  • Abraham Nitzan

    (Department of Chemistry,
    School of Chemistry, Tel Aviv University)

  • Emily A. Weiss

    (Department of Chemistry,)

  • Konstantin V. Tretiakov

    (Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA)

  • Mario M. Apodaca

    (Department of Chemistry,)

  • Rafal Klajn

    (Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA)

  • J. Fraser Stoddart

    (Department of Chemistry,)

  • Bartosz A. Grzybowski

    (Department of Chemistry,
    Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA)

Abstract

Negative photoconductance A photoconductor is a material whose electrical conductivity changes when illuminated — invariably increasing in response to the incident light. Now Nakanishi et al. show how nanoparticle-based materials can be engineered, through careful choice of the molecules used to stabilize the nanoparticles, to exhibit negative (or 'inverse') photoconductance — thin films of these materials become less conducting in the presence of light. Nanoparticle-based photoconductors based on the principles underlying these observations could find use as chemical sensors.

Suggested Citation

  • Hideyuki Nakanishi & Kyle J. M. Bishop & Bartlomiej Kowalczyk & Abraham Nitzan & Emily A. Weiss & Konstantin V. Tretiakov & Mario M. Apodaca & Rafal Klajn & J. Fraser Stoddart & Bartosz A. Grzybowski, 2009. "Photoconductance and inverse photoconductance in films of functionalized metal nanoparticles," Nature, Nature, vol. 460(7253), pages 371-375, July.
    • Handle: RePEc:nat:nature:v:460:y:2009:i:7253:d:10.1038_nature08131
    DOI: 10.1038/nature08131
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