Synthesis and characterization of uncoated and cysteamine-coated gold nanoparticles by pulsed laser ablation

Shukri, W. Norsyuhada W.; Bidin, Noriah; Islam, Shumaila; Krishnan, Ganesan; Bakar, Mohamad Aizat Abu; Affandi, Mohd Syafiq

doi:10.1117/1.jnp.10.046007

Cited by 13 publications

(2 citation statements)

References 35 publications

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“…2 b). The particle size of cysAuNPs synthesized by pulsed laser ablation has been reported in the range 5-50 nm with a large amount of cysAuNPs with particle sizes (median) of ∼20 nm was observed [26] . FTIR was carried out using Perkin Elmer Paragon 1000 FTIR spectrometer in order to identify the possible biomolecules responsible for capping the gold nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Optical reflectometric measurement of SARS-CoV-2 (COVID-19) RNA based on cationic cysteamine-capped gold nanoparticles

Jamaluddin

Ibrahim

Yusof

et al. 2023

Optics & Laser Technology

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Section: Resultsmentioning

confidence: 99%

Optical reflectometric measurement of SARS-CoV-2 (COVID-19) RNA based on cationic cysteamine-capped gold nanoparticles

Jamaluddin

Ibrahim

Yusof

et al. 2023

Optics & Laser Technology

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“…A band of amide I band at ~1700 cm −1 can be seen, consisting principally of C=O stretching vibration and many overlapping bands that represent different structural elements such as a-helices and b-sheets, twists, and irregular structures in no specific order [ 32 ]. Antibody immobilization is also demonstrated by the amide II bands seen between 1550–1640 cm −1 , which consists mainly in N–H bending [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Immunosensor for the Quantification of S100B at Clinically Relevant Levels Using a Cysteamine Modified Surface

Rodríguez

Burgos-Flórez

Posada

et al. 2021

Sensors

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Neuronal damage secondary to traumatic brain injury (TBI) is a rapidly evolving condition, which requires therapeutic decisions based on the timely identification of clinical deterioration. Changes in S100B biomarker levels are associated with TBI severity and patient outcome. The S100B quantification is often difficult since standard immunoassays are time-consuming, costly, and require extensive expertise. A zero-length cross-linking approach on a cysteamine self-assembled monolayer (SAM) was performed to immobilize anti-S100B monoclonal antibodies onto both planar (AuEs) and interdigitated (AuIDEs) gold electrodes via carbonyl-bond. Surface characterization was performed by atomic force microscopy (AFM) and specular-reflectance FTIR for each functionalization step. Biosensor response was studied using the change in charge-transfer resistance (Rct) from electrochemical impedance spectroscopy (EIS) in potassium ferrocyanide, with [S100B] ranging 10–1000 pg/mL. A single-frequency analysis for capacitances was also performed in AuIDEs. Full factorial designs were applied to assess biosensor sensitivity, specificity, and limit-of-detection (LOD). Higher Rct values were found with increased S100B concentration in both platforms. LODs were 18 pg/mL(AuES) and 6 pg/mL(AuIDEs). AuIDEs provide a simpler manufacturing protocol, with reduced fabrication time and possibly costs, simpler electrochemical response analysis, and could be used for single-frequency analysis for monitoring capacitance changes related to S100B levels.

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Influence of gold nanoparticles on wound healing treatment in rat model: Photobiomodulation therapy

et al. 2016

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Synthesis and characterization of uncoated and cysteamine-coated gold nanoparticles by pulsed laser ablation

Cited by 13 publications

References 35 publications

Optical reflectometric measurement of SARS-CoV-2 (COVID-19) RNA based on cationic cysteamine-capped gold nanoparticles

Optical reflectometric measurement of SARS-CoV-2 (COVID-19) RNA based on cationic cysteamine-capped gold nanoparticles

Electrochemical Immunosensor for the Quantification of S100B at Clinically Relevant Levels Using a Cysteamine Modified Surface

Influence of gold nanoparticles on wound healing treatment in rat model: Photobiomodulation therapy

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