Nitrilotriacetate-stabilized gold nanoparticles: a novel strategy for the colorimetric detection of Cr(iii)/Cr(vi) and the mechanistic aspects

2017 ◽  
Vol 9 (19) ◽  
pp. 2805-2811 ◽  
Author(s):  
Jianyu Wei ◽  
Luming Yang ◽  
Guozong Yue ◽  
Jing Zhu ◽  
Deshun Huang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Colorimetric Assay ◽  
Colorimetric Detection ◽  
One Pot ◽  
One Pot Synthesis ◽  
Novel Strategy

Nitrilotriacetate (NTA) has been reported to behave as both a reductant and a stabilizer for gold nanoparticle (AuNP) preparation in a one-pot synthesis and colorimetric assay.

One-pot synthesis of sub-3 nm gold nanoparticle networks connected by thio-based multidentate fullerene adducts

2015 ◽  
Vol 51 (31) ◽  
pp. 6730-6733 ◽  
Author(s):  
Guillaume Rousseau ◽  
Christophe Lavenn ◽  
Luis Cardenas ◽  
Stéphane Loridant ◽  
Yanhui Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Self Assembly ◽  
One Pot ◽  
One Pot Synthesis

Self-assembly of homogeneous ultra-small gold nanoparticles thanks to the design of a new hexaadduct fullerene bearing 12 thiocyanate functions.

scholarly journals Development of label-free gold nanoparticle based rapid colorimetric assay for clinical/point-of-care screening of cervical cancer

2020 ◽  
Vol 2 (12) ◽  
pp. 5737-5745
Author(s):  
Tejaswini Appidi ◽  
Sushma V. Mudigunda ◽  
Suseela Kodandapani ◽  
Aravind Kumar Rengan
Keyword(s):  
Cervical Cancer ◽  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Colorimetric Assay ◽  
Point Of Care ◽  
Colorimetric Detection ◽  
Label Free ◽  
Free Gold ◽  
Clinical Point

“C-ColAur” technique for colorimetric detection of cervical cancer by in situ formation of gold nanoparticles.

scholarly journals Rational screening of biomineralisation peptides for colour-selected one-pot gold nanoparticle syntheses

2019 ◽  
Vol 1 (1) ◽  
pp. 71-75 ◽  
Author(s):  
M. Tanaka ◽  
Y. Takahashi ◽  
L. Roach ◽  
K. Critchley ◽  
S. D. Evans ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Gold Nanoparticle ◽  
Peptide Library ◽  
One Pot ◽  
Binding Peptide ◽  
One Pot Synthesis ◽  
Rational Screening ◽  
The One ◽  
Spotted Array

Biomineralisation peptides that facilitate the one-pot synthesis of gold nanoparticles (AuNPs) with selected optical properties, were screened using a coherent peptide-spotted array consisting of a AuNP binding peptide library.

Facile size-controlled synthesis of fucoidan-coated gold nanoparticles and cooperative anticancer effect with doxorubicin

2017 ◽  
Vol 5 (30) ◽  
pp. 6147-6153 ◽  
Author(s):  
Hongje Jang ◽  
Kyungtae Kang ◽  
Mostafa A. El-Sayed
Keyword(s):  
Gold Nanoparticles ◽  
Surface Modification ◽  
Cancer Therapy ◽  
Gold Nanoparticle ◽  
Controlled Synthesis ◽  
Anticancer Effect ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Size Controlled

Facile one-pot synthesis, surface modification and doxorubicin conjugation of anticancer biopolymer fucoidan coated gold nanoparticle enabled highly efficient cancer therapy through cooperative treatment feasibility.

scholarly journals CRISPR/Cas12a-mediated gold nanoparticle aggregation for colorimetric detection of SARS-CoV-2

2021 ◽  
Author(s):  
Yiren Cao ◽  
Jinjun Wu ◽  
Bo Pang ◽  
Hongquan Zhang ◽  
X. Chris Le
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Colorimetric Detection ◽  
Isothermal Amplification ◽  
Nanoparticle Aggregation ◽  
Cleavage Activity ◽  
Gold Nanoparticle Aggregation

The trans-cleavage activity of the target-activated CRISPR-Cas12a liberated an RNA crosslinker from a molecular transducer, which facilitated assembly of gold nanoparticles. Integration of the molecular transducer with isothermal amplification and...

Greener One-Pot Synthesis of Gold Nanoparticle Glycoconjugates Using Functionalized Sugars

2021 ◽  
Author(s):  
Idris Yazgan ◽  
Francis J. Osonga ◽  
Roland M. Miller ◽  
Victor M. Kariuki ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
One Pot ◽  
One Pot Synthesis

scholarly journals Disulfide-induced self-assembled targets: A novel strategy for the label free colorimetric detection of DNAs/RNAs via unmodified gold nanoparticles

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Ehsan Shokri ◽  
Morteza Hosseini ◽  
Mehdi D. Davari ◽  
Mohammad R. Ganjali ◽  
Maikel P. Peppelenbosch ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Label Free ◽  
Self Assembled ◽  
Novel Strategy

One-pot synthesis of gold nanoparticles embedded in polysaccharide-based hydrogel: Physical-chemical characterization and feasibility for large-scale production

2019 ◽  
Vol 124 ◽  
pp. 838-845 ◽  
Author(s):  
Morgana Souza Marques ◽  
Κarine Modolon Zepon ◽  
Julia Maia Heckler ◽  
Fernando Dal Pont Morisso ◽  
Marcos Marques da Silva Paula ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Large Scale ◽  
Chemical Characterization ◽  
Scale Production ◽  
One Pot ◽  
One Pot Synthesis ◽  
Physical Chemical ◽  
Large Scale Production

scholarly journals Enhancement of the Peroxidase-Like Activity of Iodine-Capped Gold Nanoparticles for the Colorimetric Detection of Biothiols

Biosensors ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 113 ◽  
Author(s):  
Chia-Chen Chang ◽  
Tsz-Lian Hsu ◽  
Chie-Pein Chen ◽  
Chen-Yu Chen
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Detection Limit ◽  
Enzymatic Activity ◽  
Catalytic Properties ◽  
Colorimetric Assay ◽  
Colorimetric Detection ◽  
Synergetic Effect ◽  
Vis Spectroscopy ◽  
Wide Range

A colorimetric assay was developed for the detection of biothiols, based on the peroxidase-like activity of iodine-capped gold nanoparticles (AuNPs). These AuNPs show a synergetic effect in the form of peroxidase-mimicking activity at the interface of AuNPs, while free AuNPs and iodine alone have weak catalytic properties. Thus, iodine-capped AuNPs possess good intrinsic enzymatic activity and trigger the oxidation of 3,3’,5,5’-tetramethylbenzidine (TMB), leading to a change in color from colorless to yellow. When added to solution, biothiols, such as cysteine, strongly bind to the interface of AuNPs via gold-thiol bonds, inhibiting the catalytic activity of AuNPs, resulting in a decrease in oxidized TMB. Using this strategy, cysteine could be linearly determined, at a wide range of concentrations (0.5 to 20 μM), with a detection limit of 0.5 μM using UV-Vis spectroscopy. This method was applied for the detection of cysteine in diluted human urine.

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