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Self-Assembled Monolayer Mediated Silica Coating of Silver Triangular Nanoprisms


  • C.A.M. acknowledges ONR, DARPA, AFSOR, and MRSEC program of the National Science Foundation (DMR-0076097) at the Material Research Center of Northwestern University. C.A.M. is also grateful for the NIH Director's Pioneer Award. Supporting Information is available online from Wiley InterScience or from the authors.


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Silver core/silica shell (Ag@SiO2) nanoprisms are prepared by passivating silver nanoprism cores with 16-mercaptohexadecanoic acid (MHA), which prevents their etching and aggregation during the subsequent silica coating reaction. The resulting triangular Ag@SiO2 nanoprisms can be dispersed in organic media, environment in which the bare silver prisms are unstable, and modified with a wide variety of functional groups, including oligonucleotides.

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