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Photo-switchable molecular monolayer anchored between highly transparent and flexible graphene electrodes

Author

Listed:
  • Sohyeon Seo

    (National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University)

  • Misook Min

    (National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University)

  • Sae Mi Lee

    (National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University)

  • Hyoyoung Lee

    (National Creative Research Initiative, Center for Smart Molecular Memory, Sungkyunkwan University)

Abstract

A molecular ultra-thin film (for example, a molecular monolayer) with graphene electrodes would allow for the realization of superior stable, transparent and flexible electronics. A realistic prospect regarding the use of graphene in two-terminal molecular electronic devices is to fabricate a chemically stable, optically transparent, mechanically flexible and molecularly compatible junction. Here we report on a novel photo-switchable molecular monolayer, one side chemically and the other side physically anchored between the two graphene electrodes. The photo-switchable organic molecules specified with an electrophilic group are chemically self-assembled into a monolayer on the graphene bottom electrode, while the other end is physically contacted to the graphene top electrode; this arrangement provides excellent stability for a highly transparent and flexible molecular monolayer device with a high device yield due to soft contacts at the top electrode interface. Thus, the transparent graphene electrodes allow stable molecular photo-switching due to photo-induced changes in the molecular conformational length.

Suggested Citation

  • Sohyeon Seo & Misook Min & Sae Mi Lee & Hyoyoung Lee, 2013. "Photo-switchable molecular monolayer anchored between highly transparent and flexible graphene electrodes," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2937
    DOI: 10.1038/ncomms2937
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