Active Electrochemical Plasmonic Switching on Polyaniline-Coated Gold Nanocrystals.

Lu, Wenzheng; Jiang, Nina; Wang, Jianfang · Adv Mater · 2017

basic_science · Level V

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Abstract

High-performance electrochemical plasmonic switching is realized on both single-particle and ensemble levels by coating polyaniline on colloidal gold nanocrystals through surfactant-assisted oxidative polymerization. Under small applied potentials, the core@shell nanostructures exhibit reversible plasmon shifts as large as 150 nm, a switching time of less than 10 ms, and a high switching stability.