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Transitioning DNA-Engineered Nanoparticle Superlattices from Solution to the Solid State

Authors

  • Evelyn Auyeung,

    1. Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA
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  • Robert J. Macfarlane,

    1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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  • Chung Hang J. Choi,

    1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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  • Joshua I. Cutler,

    1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
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  • Chad A. Mirkin

    Corresponding author
    1. Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA
    2. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
    • Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA.
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Abstract

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DNA-nanoparticle superlattices are transferred to the solid state by silica encapsulation. Whereas these materials previously existed only in solution, this method allows the superlattices to remain stable in formerly inaccessible environments including in common organic solvents and at elevated temperatures. The silica-encapsulated superlattices can be directly imaged by transmission electron microscopy (TEM) where both the lattice symmetries and interparticle spacings are preserved.

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