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    Active Molecular Plasmonics: Controlling Plasmon Resonances with Molecular Switches

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    Type
    Article
    Authors
    Zheng, Yue Bing
    Yang, Ying-Wei
    Jensen, Lasse
    Fang, Lei
    Juluri, Bala Krishna
    Flood, Amar H.
    Weiss, Paul S.
    Stoddart, J. Fraser
    Huang, Tony Jun
    Date
    2009-02-11
    Permanent link to this record
    http://hdl.handle.net/10754/597448
    
    Metadata
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    Abstract
    A gold nanodisk array, coated with bistable, redox-controllable [2]rotaxane molecules, when exposed to chemical oxidants and reductants, undergoes switching of its plasmonic properties reversibly. By contrast, (i) bare gold nanodisks and (ii) disks coated with a redox-active, but mechanically inert, control compound do not display surface-plasmon-based switching. Along with calculations based on time-dependent density functional theory, these experimental observations suggest that the nanoscale movements within surface-bound “molecular machines” can be used as the active components in plasmonic devices.
    Citation
    Zheng YB, Yang Y-W, Jensen L, Fang L, Juluri BK, et al. (2009) Active Molecular Plasmonics: Controlling Plasmon Resonances with Molecular Switches. Nano Lett 9: 819–825. Available: http://dx.doi.org/10.1021/nl803539g.
    Sponsors
    We thank Dr. Amanda J. Haes (The University of Iowa) for providing the MATHCAD code used in the Kramers-Kronig analysis and Dr. Vincent Crespi for helpful discussions. This research was supported by the Air Force Office of Scientific Research (AFOSR), the National Science Foundation (NSF), and the Penn State Center for Nanoscale Science (an NSF-funded MRSEC). Components of this work were conducted at the Pennsylvania State University node of the NSF-funded National Nanotechnology Infrastructure Network. One of the authors (Y.B.Z.) thanks the support of a KAUST Scholar Award and the Founder's Prize and Grant of the American Academy of Mechanics.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/nl803539g
    PubMed ID
    19119869
    ae974a485f413a2113503eed53cd6c53
    10.1021/nl803539g
    Scopus Count
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