Critical Role of Shell in Enhanced Fluorescence of Metal–Dielectric Core–Shell Nanoparticles

@article{Sun2020CriticalRO,
  title={Critical Role of Shell in Enhanced Fluorescence of Metal–Dielectric Core–Shell Nanoparticles},
  author={Song Sun and Ilia L. Rasskazov and Paul Scott Carney and Taiping Zhang and Alexander Moroz},
  journal={The Journal of Physical Chemistry C},
  year={2020}
}
Large-scale simulations are performed by means of the transfer-matrix method to reveal optimal conditions for metal–dielectric core–shell particles to induce the largest fluorescence on their surfa... 

Figures from this paper

Atomistic description of plasmonic generation in alloys and core shell nanoparticles.
TLDR
It is shown that the non-linear behaviour of the surface plasmon resonance can be explained in terms of the difference in polarizability of the mixing constituents and local effects causing a quenching of the dipoles for geometries with a low aspect ratio.
Thinking outside the shell: novel sensors designed from plasmon-enhanced fluorescent concentric nanoparticles.
TLDR
How various solid substrates can be functionalized with MEF-based nanosensors to bestow them with intense and photostable pH-sensitive properties for use in fields such as medical therapy and diagnostics, dentistry, biochemistry and microfluidics is described.
Recent Developments in Plasmonic Nanostructures for Metal Enhanced Fluorescence-Based Biosensing
TLDR
The article covers the basic mechanism of MEF and recent developments in plasmonic nanostructures fabrication for efficient fluorescence signal enhancement that are critically reviewed, which are in practice to detect different analytes relevant to food control, medical diagnostics, and forensic science.
Raman and Fluorescence Enhancement Approaches in Graphene-Based Platforms for Optical Sensing and Imaging
TLDR
This review focuses on less explored aspects of SERS such as the role of the inter-nanoparticle (NP) distance and the ultra-small NP size limit (down to a few nm) and on novel approaches involving graphene and graphene-related materials.
Fabrication and characterizations of arbitrary-shaped silver nanoparticles for surface-enhanced fluorescence microscopy
Special shape noble metal nanoparticles at small dimensions are of great interest in nanoscience and technology. Here in this work, arbitrary-shaped silver nanoparticles in the dimension of ~6 nm
Intriguing branching of the maximum position of the absorption cross section in Mie theory explained.
TLDR
The mechanism of an appreciable blue shift of the absorption cross-section peak relative to a metal spherical particle localized surface plasmon resonance (LSPR) defined as the maximum of the extinction (and scattering) cross section is explained.
STRATIFY: a comprehensive and versatile MATLAB code for a multilayered sphere
TLDR
STRATIFY is one-of-a-kind open-source package which allows for the efficient calculation of electromagnetic near-field, energy density, total electromagnetic energy, radiative and non-radiative decay rates of a dipole emitter located in any (non-absorbing) shell (including a host medium), and fundamental cross-sections of a multilayered sphere, all within a single program.
STRATIFY: a comprehensive and versatile MATLAB code for a multilayered sphere
We present a computer code for calculating nearand far-field electromagnetic properties of multilayered spheres. STRATIFY is one-of-a-kind open-source package which allows for the efficient
Remarkable Predictive Power of the Modified Long Wavelength Approximation
The modified long-wavelength approximation (MLWA), a next order approximation beyond the Rayleigh limit, has been applied usually only to the dipole l = 1 contribution and for the range of size par...
Multipole engineering for enhanced backscattering modulation
An efficient modulation of backscattered energy is one of the key requirements for enabling efficient wireless communication channels. Typical architectures, being based on either electronically or
...
...

References

SHOWING 1-10 OF 85 REFERENCES
Enhanced Directional Fluorescence Emission of Randomly Oriented Emitters via a Metal–Dielectric Hybrid Nanoantenna
This paper reports a hybrid nanoantenna consisting of an inner metal nanodisk and an outer dielectric ring cavity with superior fluorescence enhancement performance. Based on the multipole decompos...
Shell-Isolated Nanoparticle-Enhanced Phosphorescence.
TLDR
The SHINEP may provide a novel approach for understanding the interaction of plasmon and phosphorescence, and it holds great potential in surface detection analysis and singlet-oxygen-based clinical therapy.
Plasmonic enhancement of molecular fluorescence.
TLDR
It is found that enhancement of the molecular fluorescence by more than a factor of 50 can be achieved for ICG next to a nanoparticle with a large scattering cross section and a plasmon resonance frequency corresponding to the emission frequency of the molecule.
Plasmon-enhanced fluorescence of submonolayer porphyrins by silver-polymer core-shell nanoparticles.
TLDR
The lifetime results demonstrate that there exists the fluorescence quenching due to the charge transfer and nonradiative energy transfer losses, which is the main reason that the maximum enhancement factor obtained in experiment is only about 2.3, although the theoretical one is above 60 according to the electric field distribution near silver NPs calculated by finite-difference time-domain method.
Fluorescent core-shell Ag@SiO2 nanocomposites for metal-enhanced fluorescence and single nanoparticle sensing platforms.
We report the development of highly versatile highly fluorescent and photostable core−shell Ag@SiO2 nanocomposites, which allows researchers the flexibility to incorporate just about any fluorophores
Metallodielectric Colloidal Core−Shell Particles for Photonic Applications
A new approach for the synthesis of colloidal gold shell particles with a dielectric core is described. Small gold nanoclusters were attached to the functionalized surface of colloidal silica
Fluorescence Enhancement by Metal‐Core/Silica‐Shell Nanoparticles
Fluorescent nanoparticles have been synthesized with a metal core, silica-spacer shell, and a dye-labeled silica shell. Cascade-yellow-labeled, silver-core and carboxyfluorescein-labeled, gold-core
Fabrication of Monodispersed Au@SiO2 Nanoparticles with Highly Stable Silica Layers by Ultrasound-Assisted Stöber Method
Metal@dielectric composite nanostructures are of high demand for their vast technological applications. The Stober method, either in its original form or by modification, has been utilized for the
Metal-enhanced fluorescence-based core-shell Ag@SiO₂ nanoflares for affinity biosensing via target-induced structure switching of aptamer.
TLDR
With various types of DNA probes immobilized onto the core-shell Ag@SiO2 NPs, the MEF-based nanoflare has provided an effective platform for the detection and quantification of a broad range of analytes, such as mRNA regulation and detection, cell sorting, and gene profiling.
...
...