Tuning Electrogenerated Chemiluminescence Intensity Enhancement Using Hexagonal Lattice Arrays of Gold Nanodisks.
Thomas S HeiderscheitShunpei OikawaStephen SandersHiro MinamimotoEmily K SearlesChristy F LandesKei MurakoshiAlejandro ManjavacasStephan LinkPublished in: The journal of physical chemistry letters (2021)
Electrogenerated chemiluminescence (ECL) microscopy shows promise as a technique for mapping chemical reactions on single nanoparticles. The technique's spatial resolution is limited by the quantum yield of the emission and the diffusive nature of the ECL process. To improve signal intensity, ECL dyes have been coupled with plasmonic nanoparticles, which act as nanoantennas. Here, we characterize the optical properties of hexagonal arrays of gold nanodisks and how they impact the enhancement of ECL from the coreaction of tris(2,2'-bipyridyl)dichlororuthenium(II) hexahydrate and tripropylamine. We find that varying the lattice spacing results in a 23-fold enhancement of ECL intensity because of increased dye-array near-field coupling as modeled using finite element method simulations.
Keyphrases
- high resolution
- high density
- single molecule
- high intensity
- energy transfer
- finite element
- molecular dynamics
- high throughput
- sensitive detection
- molecularly imprinted
- optical coherence tomography
- big data
- silver nanoparticles
- mass spectrometry
- machine learning
- artificial intelligence
- liquid chromatography
- simultaneous determination