Surface-enhanced Raman spectroscopy of molecules adsorbed on silver nanoparticles dispersed an agarose gel and their adsorption isotherms

2016 ◽  
Vol 86 ◽  
pp. 290-301 ◽  
Author(s):  
Karolyne V. de Oliveira ◽  
Joel C. Rubim
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Adsorption Isotherms ◽  
Surface Enhanced Raman Spectroscopy ◽  
Agarose Gel ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Silver oxide model surface improves computational simulation of surface-enhanced Raman spectroscopy on silver nanoparticles

2021 ◽  
Author(s):  
Scott G. Harroun ◽  
Yaoting Zhang ◽  
Tzu-Heng Chen ◽  
Huan-Tsung Chang ◽  
Alexis Vallée-Bélisle
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Silver Oxide ◽  
Accurate Result ◽  
Computational Simulation ◽  
Surface Enhanced Raman Spectroscopy ◽  
Model Surface ◽  
Surface Enhanced ◽  
Model Surfaces ◽  
Surface Enhanced Raman

For simulation of SERS on silver nanoparticles, Ag2O can provide a more accurate result than standard model surfaces such as Ag+, Ag, Ag4+ and Ag4.

SERS Tags Derived from Silver Nanoparticles and Aryl Diazonium Salts for Cell Raman Imaging

Nanoscale ◽  
2022 ◽  
Author(s):  
Da Li ◽  
Philippe Nizard ◽  
Delphine Onidas ◽  
Aazdine Lamouri ◽  
Jean Pinson ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Functionalization ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Imaging ◽  
Diazonium Salts ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Silver Nps ◽  
Sers Tags

The surface functionalization of silver nanoparticles (NPs) by Raman reporters has stimulated a wide interest in recent years for the design of Surface-Enhanced Raman Spectroscopy (SERS) labels. However, silver NPs...

Graphene/silver nanoparticles‐based surface‐enhanced Raman spectroscopy detection platforms: Application in the study of DNA molecules at low pH

2019 ◽  
Vol 50 (12) ◽  
pp. 1849-1860
Author(s):  
Cristina M. Muntean ◽  
Nicoleta E. Dina ◽  
Maria Coroş ◽  
Nicoleta Toşa ◽  
Alexandru I. Turza ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Low Ph ◽  
Dna Molecules ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

3D silver nanoparticles with multilayer graphene oxide as a spacer for surface enhanced Raman spectroscopy analysis

Nanoscale ◽  
2018 ◽  
Vol 10 (13) ◽  
pp. 5897-5905 ◽  
Author(s):  
Zhen Li ◽  
Shouzhen Jiang ◽  
Yanyan Huo ◽  
Tingyin Ning ◽  
Aihua Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Surface Enhanced Raman Spectroscopy ◽  
Multilayer Graphene ◽  
Spectroscopy Analysis ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We explore the variation of SERS performance towards two different Ag NP layers using multilayer GO as a spacer.

scholarly journals Design and Simple Assembly of Gold Nanostar Bioconjugates for Surface-Enhanced Raman Spectroscopy Immunoassays

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1561 ◽  
Author(s):  
Maria João Oliveira ◽  
Miguel P. de Almeida ◽  
Daniela Nunes ◽  
Elvira Fortunato ◽  
Rodrigo Martins ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Gel Electrophoresis ◽  
Polyclonal Antibodies ◽  
Surface Enhanced Raman Spectroscopy ◽  
Agarose Gel ◽  
Agarose Gel Electrophoresis ◽  
Igg Antibody ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Gold Nanostar

Immunoassays using Surface-Enhanced Raman Spectroscopy are especially interesting on account not only of their increased sensitivity, but also due to its easy translation to point-of-care formats. The bases for these assays are bioconjugates of polyclonal antibodies and anisotropic gold nanoparticles functionalized with a Raman reporter. These bioconjugates, once loaded with the antigen analyte, can react on a sandwich format with the same antibodies immobilized on a surface. This surface can then be used for detection, on a microfluidics or immunochromatographic platform. Here, we have assembled bioconjugates of gold nanostars functionalized with 4-mercaptobenzoic acid, and anti-horseradish peroxidase antibodies. The assembly was by simple incubation, and agarose gel electrophoresis determined a high gold nanostar to antibody binding constant. The functionality of the bioconjugates is easy to determine since the respective antigen presents peroxidase enzymatic activity. Furthermore, the chosen antibody is a generic immunoglobulin G (IgG) antibody, opening the application of these principles to other antibody-antigen systems. Surface-Enhanced Raman Spectroscopy analysis of these bioconjugates indicated antigen detection down to 50 µU of peroxidase activity. All steps of conjugation were fully characterized by ultraviolet-visible spectroscopy, dynamic light scattering, ζ -Potential, scanning electron microscopy, and agarose gel electrophoresis. Based on the latter technique, a proof-of-concept was established for the proposed immunoassay.

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