Nanoparticle and thin film surface plasmons are highly sensitive to electrochemically induced dielectric changes. We exploited this sensitivity to detect reversible electrochemical potential-driven anion adsorption by developing single-particle plasmon voltammetry (spPV) using plasmonic nanoantennas. spPV was used to detect sulfate electroadsorption to individual Au nanoantennas. By comparing both semiconducting and metallic thin film substrates with Au nanoparticle monomers and dimers, we demonstrated that using Au film substrates improved the signal in detecting sulfate electroadsorption and desorption through adsorbate modulated thin film conductance. Using single-particle surface plasmon spectroscopic techniques, we constructed spPV to sense sulfate, acetate, and perchlorate adsorption on coupled Au nanoantennas. spPV extends dynamic spectroelectrochemical sensing to the single-nanoantenna level using both individual plasmon resonance modes and total scattering intensity fluctuations.
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 28 April 2016.
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#14,255,539
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Outputs from Nano Letters
#9,112
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#160,485
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Outputs of similar age from Nano Letters
#133
of 195 outputs
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