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On-Demand Control of Optoelectronic Coupling in Gold Nanoparticle Arrays


  • We thank Peter Codella for assistance with the UV-vis measurements, and Hans Grade for MALDI-TOF polymer molecular weight characterization. Supporting Information, which contains the Experimental details for this work, is available online from Wiley InterScience or from the author.


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Dynamic control of interparticle coupling within a single material comprising gold nanoparticles and poly(N-isopropylacrylamide) has been developed. Core/shell particles with defined shell thicknesses are the building blocks for preparing films of sufficiently high gold nanoparticle density necessary for achieving reversible switching of several optical properties simultaneously: color, transparency, and metallic luster. The polymer-shell architecture has a strong effect on particle and film stability.

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