Dicoumarol assisted synthesis of water dispersible gold nanoparticles for colorimetric sensing of cysteine and lysozyme in biofluids

RSC Advances ◽  
2015 ◽  
Vol 5 (49) ◽  
pp. 39182-39191 ◽  
Author(s):  
Betha Saineelima B. Kasibabu ◽  
Jigna R. Bhamore ◽  
Stephanie L. D'souza ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensing ◽  
Schematic Representation ◽  
Au Nps ◽  
Water Dispersible

A schematic representation of the mechanism for the colorimetric sensing of Cys and Lys using DIC–Au NPs as a probe.

A molecular assembly of piperidine carboxylic acid dithiocarbamate on gold nanoparticles for the selective and sensitive detection of Al3+ion in water samples

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 33468-33477 ◽  
Author(s):  
Vaibhavkumar N. Mehta ◽  
Rakesh Kumar Singhal ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Carboxylic Acid ◽  
Water Samples ◽  
Molecular Assembly ◽  
Sensitive Detection ◽  
Colorimetric Sensing ◽  
Schematic Representation ◽  
Au Nps

Schematic representation for the colorimetric sensing of Al3+ion using PCA-DTC-Au NPs as a probe.

Simultaneous colorimetric detection of four drugs in their pharmaceutical formulations using unmodified gold nanoparticles as a probe

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 19924-19932 ◽  
Author(s):  
Karuna A. Rawat ◽  
Hirakendu Basu ◽  
Rakesh Kumar Singhal ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Pharmaceutical Formulations ◽  
Schematic Representation ◽  
Au Nps

Schematic representation for the aggregation of unmodified Au NPs induced by four drugs (venlafaxine, imipramine, amlodipine, and alfuzosin).

Sensitive and selective colorimetric sensing of Fe3+ion by using p-amino salicylic acid dithiocarbamate functionalized gold nanoparticles

2014 ◽  
Vol 38 (4) ◽  
pp. 1503-1511 ◽  
Author(s):  
Vaibhavkumar N. Mehta ◽  
Suresh Kumar Kailasa ◽  
Hui-Fen Wu
Keyword(s):  
Gold Nanoparticles ◽  
Salicylic Acid ◽  
Biological Samples ◽  
Colorimetric Sensing ◽  
Au Nps ◽  
Functionalized Gold Nanoparticles ◽  
Amino Salicylic Acid

DTC-PAS-Au NPs successfully acted as probes for the selective and sensitive colorimetric sensing of Fe3+ions in biological samples.

2,3,4-Trihydroxy benzophenone as a novel reducing agent for one-step synthesis of size-optimized gold nanoparticles and their application in colorimetric sensing of adenine at nanomolar concentration

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11099-11108 ◽  
Author(s):  
Karuna A. Rawat ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Reducing Agent ◽  
Colorimetric Sensing ◽  
Au Nps ◽  
Stabilizing Agent ◽  
Nanomolar Concentration ◽  
One Step

2,3,4-trihydroxy benzophenone acts as a novel reducing and stabilizing agent for one-step synthesis of size-optimized Au NPs and used as a probe for colorimetric sensing of adenine.

Malonamide dithiocarbamate functionalized gold nanoparticles for colorimetric sensing of Cu2+ and Hg2+ ions

RSC Advances ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 4245-4255 ◽  
Author(s):  
Vaibhavkumar N. Mehta ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Colorimetric Sensing ◽  
Au Nps ◽  
Colorimetric Probe ◽  
Functionalized Gold Nanoparticles

In this study, a colorimetric probe was developed based on malonamide dithiocarbamate functionalized gold nanoparticles (MA–DTC–Au NPs) for the simultaneous colorimetric detection of Cu2+ and Hg2+ ions.

Colorimetric Sensing of Methyl Parathion Using Nanozymatic Activity of Gold Nanoparticles

2020 ◽  
Vol 12 (2) ◽  
pp. 232-241
Author(s):  
Anjana Pandey ◽  
Saumya Srivastava ◽  
Gayatri ◽  
Priya Rai ◽  
Ashutosh Pandey
Keyword(s):  
Gold Nanoparticles ◽  
Methyl Parathion ◽  
Limit Of Detection ◽  
Colorimetric Assay ◽  
Cost Effective ◽  
Colorimetric Sensing ◽  
Electron Transfer Mechanism ◽  
Au Nps ◽  
New Approach ◽  
Cost Effective Technique

In this study, we have used new approach for detection of the methyl parathion residues i.e., by inhibiting half of the peroxidase-like activity of gold nanoparticles. We have investigated the peroxidase like activity of gold nanoparticles by colorimetric assay and optimized the pH, temperature, incubation time and different concentrations of H2O2 by using TMB as substrate as well as organophosphates effect on their enzyme mimetic activity. Kinetic study of gold nanoparticles has shown better catalytic activity than horseradish peroxidase at pH 3.5. The peroxidase substrate TMB (3,3,5,5-tetramethylbenzidine) can be oxidized by H2O2 by the enzymatic action of the gold nanoparticles resulting in a blue-coloured product, oxidized TMB. The principle involved behind the inhibition of enzymatic activity of nanozyme is due to hindrance of electron transfer mechanism TMB-H2O2-Au NPs system by the methyl parathion. The peroxidase activity is selectively reduced with increasing methyl parathion concentration. This sensing method has lowest limit of detection of 78.95 nM. This study can be used for development of sensitive and cost effective technique for sensing of harmful pesticides.

Rapid and sensitive colorimetric sensing of the insecticide pymetrozine using melamine-modified gold nanoparticles

2018 ◽  
Vol 10 (4) ◽  
pp. 417-421 ◽  
Author(s):  
Jing-yan Kang ◽  
Yu-jie Zhang ◽  
Xing Li ◽  
Chen Dong ◽  
Hong-yu Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Natural Water ◽  
Visual Detection ◽  
Detection Limits ◽  
High Sensitivity ◽  
Food Samples ◽  
Colorimetric Sensing ◽  
Au Nps

A rapid, selective, visual detection sensor with high sensitivity and low detection limits for the pesticide pymetrozine (PYM) was prepared from melamine-modified gold nanoparticles (M-Au NPs), and shown to be effective in both natural water and food samples.

One-pot synthesis of gold nanoparticles by using 4-aminoantipyrine as a novel reducing and capping agent for simultaneous colorimetric sensing of four triptan-family drugs

2014 ◽  
Vol 6 (15) ◽  
pp. 5972-5980 ◽  
Author(s):  
Karuna A. Rawat ◽  
Kiran R. Surati ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Color Change ◽  
Capping Agent ◽  
Colorimetric Sensing ◽  
One Pot ◽  
Au Nps ◽  
One Pot Synthesis

We prepared Au NPs using 4-aminoantipyrine as a novel reagent and the Au NPs aggregation was induced by triptan-family drugs independently, resulting a color change from pink to blue.

Ascorbic acid functionalized gold nanoparticles as a probe for colorimetric and visual read-out determination of dichlorvos in environmental samples

2014 ◽  
Vol 6 (22) ◽  
pp. 9007-9014 ◽  
Author(s):  
Stephanie L. D'souza ◽  
Ranjan Kumar Pati ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Environmental Samples ◽  
Schematic Representation ◽  
Au Nps ◽  
Colorimetric Probe ◽  
Analytical Process ◽  
Functionalized Gold Nanoparticles

Schematic representation of the analytical process for detecting dichlorvos using AA–Au NPs as a colorimetric probe.

scholarly journals Easy and fast in-situ functionalization of exfoliated 2D black phosphorus with gold nanoparticles

2021 ◽  
Author(s):  
Salvatore Moschetto ◽  
Andrea Ienco ◽  
Gabriele Manca ◽  
Manuel Serrano-Ruiz ◽  
Maurizio Peruzzini ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Black Phosphorus ◽  
Au Nps ◽  
In Situ Functionalization

Heterostructures of single- and few-layer black phosphorus (2D bP) functionalized with gold nanoparticles (Au NPs) have been recently reported in the literature, exploiting their intriguing properties and biocompatibility for catalytic,...

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