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Langmuir. 2009 Nov 17;25(22):13120-4. doi: 10.1021/la901779k.

Gold nanoparticles with externally controlled, reversible shifts of local surface plasmon resonance bands.

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  • 1Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA.

Abstract

We have achieved reversible tunability of local surface plasmon resonance in conjugated polymer functionalized gold nanoparticles. This property was facilitated by the preparation of 3,4-ethylenedioxythiophene (EDOT) containing polynorbornene brushes on gold nanoparticles via surface-initiated ring-opening metathesis polymerization. Reversible tuning of the surface plasmon band was achieved by electrochemically switching the EDOT polymer between its reduced and oxidized states.

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