Self-Assembled Gold Nanoparticles as Reusable SERS Substrates for Polyphenolic Compound Detection DOI Open Access
A. L. Pavlova, Ksenia Maleeva, Ivan V. Moskalenko

et al.

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(23), P. 12785 - 12785

Published: Nov. 28, 2024

Natural polyphenolic compounds play a pivotal role in biological processes and exhibit notable antioxidant activity. Among these compounds, chlorogenic acid stands out as one of the most widespread important polyphenols. The accurate detection is crucial for ensuring quality classification raw materials used its extraction, well final products food, pharmaceutical, cosmetics industries that contain this bioactive compound. Raman spectroscopy emerges powerful analytical tool, particularly field applications, due to versatility sensitivity, offering both qualitative quantitative analyses. By using self-assembly gold nanoparticles at liquid–liquid interfaces developed “aqua-print” process, we propose facile inexpensive route fabricate enhanced substrates surface-enhanced with high reproducibility. To ensure substrate reliability molecule SERS experiments, benchmarking procedure was developed. This process involved use non-resonant rhodamine 6G dye absence charge transfer applied all synthesized fabricated substrates. latter revealed highest enhancement factor 4 × 104 72 nm among nanoparticle diameters ranging from 14 99 nm. Furthermore, implemented concentration range 10 μM 350 μM, demonstrating accuracy (R2 > 99%). mapping employed validate good uniformity signal (the standard deviation below 15%). findings study were also supported by DFT calculations theoretical spectra, formation dimer. proposed method strategically development class in-field methods detect such plants, extracted plant proteins, compounds.

Language: Английский

Developments in Localized Surface Plasmon Resonance DOI Creative Commons

Michael Mcoyi,

Kelvin Mpofu,

Masindi Sekhwama

et al.

Plasmonics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

Abstract Localized surface plasmon resonance (LSPR) is a nanoscale phenomenon associated with noble metal nanostructures that has long been studied and gained considerable interest in recent years. These resonances produce sharp spectral absorption scattering peaks, along strong electromagnetic near-field enhancements. Over the past decade, advancements fabrication of have propelled significant developments various scientific technological aspects LSPR. One notable application detection molecular interactions near nanoparticle surface, observable through shifts LSPR peak. This document provides an overview this sensing strategy. Given broad expanding scope topic, it impossible to cover every aspect comprehensively review. However, we aim outline major research efforts within field review diverse array relevant literature. We will provide detailed summary physical principles underlying address some existing inconsistencies nomenclature used. Our discussion primarily focus on sensors employ nanoparticles, rather than those utilizing extended, fabricated structures. concentrate where acts as primary mode signal transduction, excluding hybrid strategies like combining fluorescence. Additionally, our examination biological largely pertain label-free methods, use nanoparticles labels or means enhance efficacy label. In subsequent section review, delve into analytical theory underpinning LSPR, exploring its origins dependency material properties metals surrounding refractive index. discuss behavior both spherical spheroidal particles elaborate how response varies particle ratio. Further, detail fundamentals nanoparticle-based sensing. includes exploration single-particle ensemble measurements comparative analysis scattering, absorption, extinction phenomena. The extend these are applied practical scenarios, highlighting key experimental approaches measurement techniques.

Language: Английский

Citations

14
Microfluidic-SERS sensing system based on dual signal amplification and aptamer for gastric cancer detection DOI
Yong Huang, Miao Chen,

Fengjuan Jiang

et al.

Microchimica Acta, Journal Year: 2024, Volume and Issue: 191(11)

Published: Oct. 14, 2024

Language: Английский

Citations

4
Additive metal printing on multi materials using an atmospheric pressure plasma jet on a 5-Axis platform DOI Creative Commons
Oliver S. J. Hagger, Michael A. Parkes, Francis Lockwood Estrin

et al.

Materials & Design, Journal Year: 2025, Volume and Issue: 251, P. 113681 - 113681

Published: Feb. 1, 2025

Language: Английский

Citations

0
Surface-enhanced Raman scattering for the detection of biomarkers of neurodegenerative diseases: A review DOI
Chentao Li,

Yinglin Wang,

Yafang Wu

et al.

TrAC Trends in Analytical Chemistry, Journal Year: 2025, Volume and Issue: 185, P. 118173 - 118173

Published: Feb. 3, 2025

Language: Английский

Citations

0
Simplified Biochemical Analysis Using p-Block Metals and Their Compounds with Silver─Surface Enhancement from the Point of View of Electronic Structure DOI Creative Commons
R. Todorov, Temenuga Hristova‐Vasileva

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Language: Английский

Citations

0
Self-Assembled Gold Nanoparticles as Reusable SERS Substrates for Polyphenolic Compound Detection DOI Open Access
A. L. Pavlova, Ksenia Maleeva, Ivan V. Moskalenko

et al.

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(23), P. 12785 - 12785

Published: Nov. 28, 2024

Natural polyphenolic compounds play a pivotal role in biological processes and exhibit notable antioxidant activity. Among these compounds, chlorogenic acid stands out as one of the most widespread important polyphenols. The accurate detection is crucial for ensuring quality classification raw materials used its extraction, well final products food, pharmaceutical, cosmetics industries that contain this bioactive compound. Raman spectroscopy emerges powerful analytical tool, particularly field applications, due to versatility sensitivity, offering both qualitative quantitative analyses. By using self-assembly gold nanoparticles at liquid–liquid interfaces developed “aqua-print” process, we propose facile inexpensive route fabricate enhanced substrates surface-enhanced with high reproducibility. To ensure substrate reliability molecule SERS experiments, benchmarking procedure was developed. This process involved use non-resonant rhodamine 6G dye absence charge transfer applied all synthesized fabricated substrates. latter revealed highest enhancement factor 4 × 104 72 nm among nanoparticle diameters ranging from 14 99 nm. Furthermore, implemented concentration range 10 μM 350 μM, demonstrating accuracy (R2 > 99%). mapping employed validate good uniformity signal (the standard deviation below 15%). findings study were also supported by DFT calculations theoretical spectra, formation dimer. proposed method strategically development class in-field methods detect such plants, extracted plant proteins, compounds.

Language: Английский

Citations

2