Gold and silver nanoparticles in resonance Rayleigh scattering techniques for chemical sensing and biosensing: a review

El-Kurdi, Riham; Patra, Digambara

doi:10.1007/s00604-019-3755-4

Cited by 45 publications

(18 citation statements)

References 102 publications

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“…Light scattering and absorption also depend on the environment, which allows the use of single NPs as a nanosensors for ultrasensitive detection of various biological and chemical analytes. 156 …”

Section: Imaging Techniquesmentioning

confidence: 99%

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Optical Microscopy Systems for the Detection of Unlabeled Nanoparticles

Friedrich¹,

Kappes²,

Cicha³

et al. 2022

IJN

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Label-free detection of nanoparticles is essential for a thorough evaluation of their cellular effects. In particular, nanoparticles intended for medical applications must be carefully analyzed in terms of their interactions with cells, tissues, and organs. Since the labeling causes a strong change in the physicochemical properties and thus also alters the interactions of the particles with the surrounding tissue, the use of fluorescently labeled particles is inadequate to characterize the effects of unlabeled particles. Further, labeling may affect cellular uptake and biocompatibility of nanoparticles. Thus, label-free techniques have been recently developed and implemented to ensure a reliable characterization of nanoparticles. This review provides an overview of frequently used label-free visualization techniques and highlights recent studies on the development and usage of microscopy systems based on reflectance, darkfield, differential interference contrast, optical coherence, photothermal, holographic, photoacoustic, total internal reflection, surface plasmon resonance, Rayleigh light scattering, hyperspectral and reflectance structured illumination imaging. Using these imaging modalities, there is a strong enhancement in the reliability of experiments concerning cellular uptake and biocompatibility of nanoparticles, which is crucial for preclinical evaluations and future medical applications.

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Section: Imaging Techniquesmentioning

confidence: 99%

“… 159 In addition to the studies mentioned above, there are numerous other examples where resonance Rayleigh scattering has been used for very sensitive detection of a wide variety of proteins, nucleic acids, insecticides, pesticides, fungicides, and metal ions. 156 …”

Section: Imaging Techniquesmentioning

confidence: 99%

Optical Microscopy Systems for the Detection of Unlabeled Nanoparticles

Friedrich¹,

Kappes²,

Cicha³

et al. 2022

IJN

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“…Light scattering, [8][9][10][11][12] developed as a sensitive instrumental analysis method, is involved in diverse applications in inorganics, [13][14][15][16] organics, 17,18 nucleic acids, [19][20][21][22][23][24] biological particles 25 and proteins. [26][27][28][29][30][31] When Huang 21 studied the for-mation of supercoiled assemblies in α,β,γ,δ-tetrakis [4-(trimethylammoniumyl)phenyl]porphine and nucleic acids, he found that there were linear relationships between the enhanced extent of light scattering and the concentrations of nucleic acids within a certain range. The sensitive quantitative method came into being.…”

Section: Introductionmentioning

confidence: 99%

The unique physical shading pattern of Rayleigh scattering for the generally improved detection of scattering particles

Meng

Nie

et al. 2022

Analyst

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“…Patra [18] successfully synthesized polyethylene glycol block-polypropylene glycol block-polyethylene glycol (F-108) functionalized AuNPs by using RRS spectral probe to detect enzymes and labeled free sugars in serum samples. El-Kurdi [19] published the progress of chemical sensing and biosensing of gold and silver nanoparticles in RRS technology. Li [20] applied a multifunctional AuNPs probe based on anti-EGFR Apt-and anti-EGFR antibody (Ab) to EGFR-positive cancer cells.…”

Section: Introductionmentioning

confidence: 99%

An aptamer SERS/RRS/Abs trimode biosensor for trace Pb 2+ based- liquid crystal@nanosilver catalytic amplification

Shu

Liang

et al. 2022

Preprint

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Liquid crystals (LCs) are a very important display material. However, the use of LC, especially LC loaded nanoparticles, as a catalyst to amplify analytical signal and coupled with specific aptamer (Apt) as recognition element to construct a highly sensitive and selective three-mode molecular spectral assay is rarely reported. In this article, five LCs such as cholesteryl benzoate (CB) were studied by molecular spectroscopy to indicate liquid crystal nanoparticles in the system, and highly catalysis and stable CB loaded-nanosilver (CB@AgNPs) sol was prepared. The slope procedure was used to study the catalysis of the five LCs and CB@AgNPs on the new indicator reaction between AgNO3 and sodium formate (Fo) to produce silver nanoparticles (AgNPs) with a strong surface plasmon resonance absorption (Abs) peak at 450 nm, resonance Rayleigh scattering (RRS) peak at 370 nm and surface enhanced Raman scattering (SERS) peak at 1618 cm− 1 in the presence of molecular probes. By coupling the new CB@AgNPs catalytic indicator reaction with the Apt reaction, a new CB@AgNPs catalytic amplification-SERS/RRS/Abs trimode biosensoring platform was constructed for detecting for inorganic pollutants such as Pb2+, Cd2+, Hg2+ and As3+.

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Gold and silver nanoparticles in resonance Rayleigh scattering techniques for chemical sensing and biosensing: a review

Cited by 45 publications

References 102 publications

Optical Microscopy Systems for the Detection of Unlabeled Nanoparticles

Optical Microscopy Systems for the Detection of Unlabeled Nanoparticles

The unique physical shading pattern of Rayleigh scattering for the generally improved detection of scattering particles

An aptamer SERS/RRS/Abs trimode biosensor for trace Pb 2+ based- liquid crystal@nanosilver catalytic amplification

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