Control of the catalytic properties and directed assembly on surfaces of MADIX/RAFT polymer-coated gold nanoparticles by tuning polymeric shell charge

2010 ◽  
Vol 20 (42) ◽  
pp. 9433 ◽  
Author(s):  
Mariana Beija ◽  
Etienne Palleau ◽  
Stéphanie Sistach ◽  
Xuange Zhao ◽  
Laurence Ressier ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Properties ◽  
Directed Assembly

Catalytic properties of gold nanoparticles immobilized on the surfaces of nanocarriers

2009 ◽  
Vol 12 (5) ◽  
pp. 1877-1887 ◽  
Author(s):  
Xi Chen ◽  
Dongyun Zhao ◽  
Yingli An ◽  
Linqi Shi ◽  
Wenchao Hou ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Properties

scholarly journals On the Structural Origin of the Catalytic Properties of Inherently Strained Ultrasmall Decahedral Gold Nanoparticles

Nano Letters ◽  
2012 ◽  
Vol 12 (4) ◽  
pp. 2027-2031 ◽  
Author(s):  
Michael J. Walsh ◽  
Kenta Yoshida ◽  
Akihide Kuwabara ◽  
Mungo L. Pay ◽  
Pratibha L. Gai ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Properties

Effect of Composition on the Catalytic Properties of Mixed-Ligand-Coated Gold Nanoparticles

2011 ◽  
Vol 123 (34) ◽  
pp. 8046-8051 ◽  
Author(s):  
Anirban Ghosh ◽  
Soubir Basak ◽  
Benjamin H. Wunsch ◽  
Rajiv Kumar ◽  
Francesco Stellacci
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Properties ◽  
Mixed Ligand

scholarly journals Hemoglobin-driven iron-directed assembly of gold nanoparticles

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15675-15686 ◽  
Author(s):  
Jacquelyn G. Egan ◽  
Nicole Drossis ◽  
Iraklii I. Ebralidze ◽  
Holly M. Fruehwald ◽  
Nadia O. Laschuk ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Directed Assembly ◽  
Building Blocks ◽  
Form Complex

The ability to form complex 3D architectures using nanoparticles as the building blocks and complex macromolecules that direct these assemblies remains a challenging objective for nanotechnology.

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.

Directed assembly of gold nanoparticles

2009 ◽  
Vol 14 (2) ◽  
pp. 126-134 ◽  
Author(s):  
Fredrik Westerlund ◽  
Thomas Bjørnholm
Keyword(s):  
Gold Nanoparticles ◽  
Directed Assembly
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