Pd@Pt nanoparticle-linked immunosorbent assay for quantification of Collagen type II

Kwon, Eunice Y.; Abusharkh, Haneen A.; Ruan, Xiaofan; Du, Dan; Hammond-Pereira, Ellis; Wie, Bernard J. Van

doi:10.1016/j.aca.2023.341265

Cited by 3 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To evaluate the catalytic activity of the reporter DNA-Pd@Pt NPs (detector), we conducted tests using TMB as the substrate at various pH values and recorded the absorbance peak intensity at 652 nm. 50,51 As shown in Fig. S3C,† the detector exhibited the highest absorbance peak intensity at pH = 4.…”

Section: Resultsmentioning

confidence: 84%

Diagnosis of Mycobacterium tuberculosis using palladium–platinum bimetallic nanoparticles combined with paper-based analytical devices

Tung,

Tsai,

Chiu

et al. 2024

Nanoscale

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 84%

Diagnosis of Mycobacterium tuberculosis using palladium–platinum bimetallic nanoparticles combined with paper-based analytical devices

Tung,

Tsai,

Chiu

et al. 2024

Nanoscale

View full text Add to dashboard Cite

show abstract

“…Enzyme-linked immunosorbent assay (ELISA) based detection systems have been widely used for the measurement of various kinds of disease biomarkers [24][25][26]. 3,3′,5,5′tetramethylbenzidine (TMB) is an important substrate that can be oxidized to TMB + (blue) or TMB 2+ (yellow) for colorimetric immunoassays.…”

Section: Introductionmentioning

confidence: 99%

TMB⁺-mediated etching of urchin-like gold nanostructures for colorimetric sensing

Huang,

Krishnakumar,

Denomme

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

The morphology-dependent localized surface plasmon resonance (LSPR) of gold nanostructures has been widely utilized for designing sensors. One method relies on the color change of gold nanoparticles upon etching. In previous work, TMB2+ oxidized from 3,3’,5,5’-tetramethylbenzidine (TMB) was found to etch gold nanorods (AuNRs), leading to a spectrum of different colors. However, the preparation of TMB2+ needs the addition of a strong acid and other harsh conditions. Herein, a new colorimetric biosensing platform was developed using urchin-like gold nanoparticles (AuNUs). Compared with AuNRs, the etching of AuNUs can happen under mild conditions by TMB+ at pH 6, protecting enzymes and proteins from denaturation. The role of CTAB surfactant was dissected, and its bromide ions were found to involve in the etching process. Based on these observations, a one-step colorimetric detection of H2O2 was realized by using horseradish peroxidase and H2O2 to oxidize TMB. Within 30 min, this system achieved a detection limit of 80 nM H2O2. This work offered fundamental insights into the etching of anisotropic gold nanostructures and optimized the etching conditions. These advancements hold promise for broader applications in biosensing and analytical chemistry.

show abstract

Recent development of noble metal-based bimetallic nanoparticles for colorimetric sensing

Liu,

Liang,

et al. 2023

TrAC Trends in Analytical Chemistry

View full text Add to dashboard Cite

Pd@Pt nanoparticle-linked immunosorbent assay for quantification of Collagen type II

Cited by 3 publications

References 40 publications

Diagnosis of Mycobacterium tuberculosis using palladium–platinum bimetallic nanoparticles combined with paper-based analytical devices

Diagnosis of Mycobacterium tuberculosis using palladium–platinum bimetallic nanoparticles combined with paper-based analytical devices

TMB⁺-mediated etching of urchin-like gold nanostructures for colorimetric sensing

Recent development of noble metal-based bimetallic nanoparticles for colorimetric sensing

Contact Info

Product

Resources

About

Pd@Pt nanoparticle-linked immunosorbent assay for quantification of Collagen type II

Cited by 3 publications

References 40 publications

Diagnosis of Mycobacterium tuberculosis using palladium–platinum bimetallic nanoparticles combined with paper-based analytical devices

Diagnosis of Mycobacterium tuberculosis using palladium–platinum bimetallic nanoparticles combined with paper-based analytical devices

TMB+-mediated etching of urchin-like gold nanostructures for colorimetric sensing

Recent development of noble metal-based bimetallic nanoparticles for colorimetric sensing

Contact Info

Product

Resources

About

TMB⁺-mediated etching of urchin-like gold nanostructures for colorimetric sensing