Tuning Electrogenerated Chemiluminescence Intensity Enhancement Using Hexagonal Lattice Arrays of Gold Nanodisks

Abstract

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.

Surface Lattice Plasmon Resonances by Direct In Situ Substrate Growth of Gold Nanoparticles in Ordered Arrays

“…[ 3 ] This compensation generates lattice plasmon resonances, and offers an additional possibility for tuning the optical properties, depending on the angle of illumination and the geometrical parameters of the array. [ 3 ] Due to their narrow bandwidth (<2 nm) and long lifetimes, [ 3–5 ] lattice plasmon resonances already impact the enhancement and manipulation of light–matter interactions, [ 6–8 ] sensing, [ 9–12 ] displays, [ 13 ] information storage [ 14 ] and anti‐reflective materials. [ 15 ]…”

“…[3] This compensation generates lattice plasmon resonances, and offers an additional possibility for tuning the optical properties, depending on the angle of illumination and the geometrical parameters of the array. [3] Due to their narrow bandwidth (<2 nm) and long lifetimes, [3][4][5] lattice plasmon resonances already impact the enhancement and manipulation of light-matter interactions, [6][7][8] sensing, [9][10][11][12] displays, [13] information storage [14] and anti-reflective materials. [15] The development of a simple, scalable, and rapid technique that combines the benefits of top-down and bottom-up methods Precise arrangements of plasmonic nanoparticles on substrates are important for designing optoelectronics, sensors and metamaterials with rational electronic, optical and magnetic properties.…”

Lattice relaxation effects on the collective resonance spectra of a finite dipole array

“…These novel properties have pushed forward a lot of new devices and applications based on plasmonic SLR, e.g. , transmission and reflection spectrum control, 5–7 demonstrations of strong-coupling between molecules and plasmonic SLRs, 8–15 plasmonic SLR lasing, 16–22 and chiral plasmonic SLR. 23–25 Dielectric SLR has also been proved recently.…”

“…The plasmonic SLR can create sharp and narrow resonance peaks with relatively large intensity, while under the resonance conditions, an intense electromagnetic field is distributed in small volume. These novel properties have pushed forward a lot of new devices and applications based on plasmonic SLR, e.g., transmission and reflection spectrum control, [5][6][7] demonstrations of strong-coupling between molecules and plasmonic SLRs, [8][9][10][11][12][13][14][15] plasmonic SLR lasing, [16][17][18][19][20][21][22] and chiral plasmonic SLR. [23][24][25] Dielectric SLR has also been proved recently.…”

Role of Solvent in Electron‐Phonon Relaxation Dynamics in Core‐Shell Au−SiO2 Nanoparticles

“…Metal nanoparticles have generated significant interest in recent times because of their unique optical, electrical and photocatalytic properties. [1][2][3][4][5][6][7][8][9] They have a myriad of applications, e. g. in targeted drug delivery, [10][11][12] bio imaging, [13][14][15][16] biosensing, [17,18] radiative decay engineering, [19] directional fluorescence [20] as nanothermometers, [21][22][23][24] in control of DNA hybridization [25] and in enhancement of emission of biomolecules. [7,16,18,26] Dynamics of heat dissipation, electron dynamics and relaxation processes often play crucial roles in these applications.…”