Giant Plasmon Resonance Shift Using Poly(3,4-ethylenedioxythiophene) Electrochemical Switching

Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baif, 75205 Paris cedex 13, France.
Journal of the American Chemical Society (Impact Factor: 11.44). 08/2010; 132(30):10224-6. DOI: 10.1021/ja103337d
Source: PubMed

ABSTRACT Herein, we report the variation of localized surface plasmon resonance (LSPR) of gold nanoparticle (NP) arrays covered by poly(3,4-ethylenedioxythiophene) (PEDOT) as a function of the electronic state of the polymer. Giant shifts and fine-tuning of the LSPR of gold NPs surrounded by PEDOT/sodium docecyl sulfate have been achieved. The color variations of plasmonic/conducting polymer (CP) devices are given not only by changes of the optical properties of the CP upon doping but also by a close synergy of the optical properties of CP and NP. Such systems can considerably extend the field of CP-based electrochromic devices.

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