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.

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.

Multi-charged bis(p-calixarene)/pillararene functionalized gold nanoparticles for ultra-sensitive sensing of butyrylcholinesterase

Soft Matter ◽  
2019 ◽  
Vol 15 (41) ◽  
pp. 8197-8200 ◽  
Author(s):  
Pei-yu Li ◽  
Yong Chen ◽  
Chang-hui Chen ◽  
Yu Liu
Keyword(s):  
Gold Nanoparticles ◽  
Supramolecular Assembly ◽  
Colorimetric Sensing ◽  
Functionalized Gold Nanoparticles

A novel supramolecular assembly based on BSC4A/CP5A modified AuNPs for colorimetric sensing of both succinylcholine (SuCh) and butyrylcholinesterase (BChE).

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.

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.

Selective Colorimetric Sensing of Geometrical Isomers of Dicarboxylates in Water by Using Functionalized Gold Nanoparticles

2008 ◽  
Vol 3 (11) ◽  
pp. 1962-1967 ◽  
Author(s):  
Amrita Chatterjee ◽  
Dong Ju Oh ◽  
Kyung Mi Kim ◽  
Kyung-Seog Youk ◽  
Kyo Han Ahn
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensing ◽  
Geometrical Isomers ◽  
Functionalized Gold Nanoparticles

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.

Simple and sensitive colorimetric sensing of Cd2+ ion using chitosan dithiocarbamate functionalized gold nanoparticles as a probe

2015 ◽  
Vol 220 ◽  
pp. 850-858 ◽  
Author(s):  
Vaibhavkumar N. Mehta ◽  
Hirakendu Basu ◽  
Rakesh Kumar Singhal ◽  
Suresh Kumar Kailasa
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensing ◽  
Functionalized Gold Nanoparticles

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.

Colorimetric sensing of iodide based on triazole-acetamide functionalized gold nanoparticles

2014 ◽  
Vol 181 (5-6) ◽  
pp. 573-579 ◽  
Author(s):  
I-Lin Lee ◽  
Yi-Ming Sung ◽  
Chien-Hou Wu ◽  
Shu-Pao Wu
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensing ◽  
Functionalized Gold Nanoparticles
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