Surface plasmon resonances enhanced click chemistry through synergistic photothermal and hot electron effects

2019 ◽  
Vol 55 (33) ◽  
pp. 4813-4816 ◽  
Author(s):  
Xia Sun ◽  
Yu Zou ◽  
Jiang Jiang
Keyword(s):  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Click Reaction ◽  
Resonance Excitation ◽  
Hot Electron ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Electron Effects

Surface plasmon resonance excitation on Au enhances a visible light-assisted click reaction through synergistic photothermal and hot electron effects.

scholarly journals Layered material platform for surface plasmon resonance biosensing

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
F. Wu ◽  
P. A. Thomas ◽  
V. G. Kravets ◽  
H. O. Arola ◽  
M. Soikkeli ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Food Safety ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Point Of Care ◽  
Layered Materials ◽  
Label Free ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances

AbstractPlasmonic biosensing has emerged as the most sensitive label-free technique to detect various molecular species in solutions and has already proved crucial in drug discovery, food safety and studies of bio-reactions. This technique relies on surface plasmon resonances in ~50 nm metallic films and the possibility to functionalize the surface of the metal in order to achieve selectivity. At the same time, most metals corrode in bio-solutions, which reduces the quality factor and darkness of plasmonic resonances and thus the sensitivity. Furthermore, functionalization itself might have a detrimental effect on the quality of the surface, also reducing sensitivity. Here we demonstrate that the use of graphene and other layered materials for passivation and functionalization broadens the range of metals which can be used for plasmonic biosensing and increases the sensitivity by 3-4 orders of magnitude, as it guarantees stability of a metal in liquid and preserves the plasmonic resonances under biofunctionalization. We use this approach to detect low molecular weight HT-2 toxins (crucial for food safety), achieving phase sensitivity~0.5 fg/mL, three orders of magnitude higher than previously reported. This proves that layered materials provide a new platform for surface plasmon resonance biosensing, paving the way for compact biosensors for point of care testing.

scholarly journals Electromagnetic Scattering from a Graphene Disk: Helmholtz-Galerkin Technique and Surface Plasmon Resonances

Mathematics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1429
Author(s):  
Mario Lucido
Keyword(s):  
Surface Plasmon Resonance ◽  
Cross Section ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Impedance Boundary Condition ◽  
Helmholtz Decomposition ◽  
Surface Plasmon Resonances ◽  
Impedance Boundary ◽  
Resonance Frequencies ◽  
Plasmon Resonances

The surface plasmon resonances of a monolayer graphene disk, excited by an impinging plane wave, are studied by means of an analytical-numerical technique based on the Helmholtz decomposition and the Galerkin method. An integral equation is obtained by imposing the impedance boundary condition on the disk surface, assuming the graphene surface conductivity provided by the Kubo formalism. The problem is equivalently formulated as a set of one-dimensional integral equations for the harmonics of the surface current density. The Helmholtz decomposition of each harmonic allows for scalar unknowns in the vector Hankel transform domain. A fast-converging Fredholm second-kind matrix operator equation is achieved by selecting the eigenfunctions of the most singular part of the integral operator, reconstructing the physical behavior of the unknowns, as expansion functions in a Galerkin scheme. The surface plasmon resonance frequencies are simply individuated by the peaks of the total scattering cross-section and the absorption cross-section, which are expressed in closed form. It is shown that the surface plasmon resonance frequencies can be tuned by operating on the chemical potential of the graphene and that, for orthogonal incidence, the corresponding near field behavior resembles a cylindrical standing wave with one variation along the disk azimuth.

Boosting the Electrochemistry of Li2O2 in Lithium−Oxygen Batteries by Plasmon-induced Hot-Electron Injection

2021 ◽  
Author(s):  
Weixue Yang ◽  
Fei Li ◽  
Huali Liu ◽  
Zhen Li ◽  
Jiaqi Zhao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Hot Electron ◽  
Au Nps ◽  
Hot Electron Injection ◽  
Lithium Oxygen Batteries

A photo-assisted Li−Oxygen (Li−O2) battery with Au/SnO2 (ASO) hybrid nanotubes as cathode and photocatalyst has been prepared. The localized surface plasmon resonance (LSPR) excitation of gold nanoparticles (Au NPs) can...

scholarly journals The production of an efficient visible light photocatalyst for CO oxidation through the surface plasmonic effect of Ag nanoparticles on SiO2@α-Fe2O3 nanocomposites

RSC Advances ◽  
2018 ◽  
Vol 8 (23) ◽  
pp. 12547-12555 ◽  
Author(s):  
Kasimayan Uma ◽  
Shih-Wen Chen ◽  
Nadarajan Arjun ◽  
Guan-Ting Pan ◽  
Thomas C.-K. Yang
Keyword(s):  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Co Oxidation ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Ag Nanoparticles ◽  
Systematic Investigation ◽  
Plasmonic Effect ◽  
Visible Light Photocatalyst

We present a systematic investigation of CO oxidation and surface plasmon resonance on SiO2@α-Fe2O3 nanocomposite spheres with different weight percentages of Ag nanoparticles.

Influence of dimensionality and crystallization on visible-light hydrogen production of Au@TiO2 core–shell photocatalysts based on localized surface plasmon resonance

2018 ◽  
Vol 8 (4) ◽  
pp. 1094-1103 ◽  
Author(s):  
Bing Liu ◽  
Yan Jiang ◽  
Yin Wang ◽  
Shuxia Shang ◽  
Yuanman Ni ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Surface Plasmon Resonance ◽  
Hydrogen Production ◽  
Visible Light ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Core Shell

We synthesized four Au@TiO2 nanostructures, which exhibit dimensionality- and crystallinity-dependent photocatalytic activity towards H2 generation.

Sign in / Sign up

Export Citation Format

Share Document