Redox-Tunable Defects in Colloidal Photonic Crystals

Authors

  • F. Fleischhaker,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
    2. Institute of Organic Chemistry, Department of Chemistry and Pharmacy, University of Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany
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  • A. C. Arsenault,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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  • Z. Wang,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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  • V. Kitaev,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
    2. Present address: Department of Chemistry, Wilfrid Laurier University, 75 University Ave. W, Waterloo, ON N2L 3C5, Canada.
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  • F. C. Peiris,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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  • G. von Freymann,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
    2. Present address: Institut für Nanotechnologie, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany.
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  • I. Manners,

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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  • R. Zentel,

    1. Institute of Organic Chemistry, Department of Chemistry and Pharmacy, University of Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany
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  • G. A. Ozin

    1. Materials Chemistry Research Group, Chemistry Department, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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  • GAO and IM are Government of Canada Research Chairs in Materials and Polymer Chemistry. FF and ACA thank the "Fonds der chemischen Industrie" and NSERC, respectively, for graduate scholarships. The authors are grateful to NSERC, the University of Toronto, and the DFG for financial assistance.

Abstract

original image

Reversible tuning of an intragap transmitting state induced by redox cycling is accomplished using a redox-active polyelectrolyte multilayer planar defect embedded in a colloidal photonic crystal (CPC). The wavelength position of the defect state can be changed by changing the oxidation state of the ferrocene moieties in the polymer backbone (see Figure). This could find applications in electrochemically tunable microcavities and CPC-based laser sources.

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