Colorimetric detection of mercury, lead and copper ions simultaneously using protein-functionalized gold nanoparticles

2011 ◽  
Vol 26 (10) ◽  
pp. 4064-4069 ◽  
Author(s):  
Yongming Guo ◽  
Zhuo Wang ◽  
Weisi Qu ◽  
Huawu Shao ◽  
Xingyu Jiang
Keyword(s):  
Gold Nanoparticles ◽  
Copper Ions ◽  
Colorimetric Detection ◽  
Functionalized Gold Nanoparticles

Highly Selective Colorimetric Detection of Copper Ions Using Cysteamine Functionalized Gold Nanoparticles

2014 ◽  
Vol 61 (12) ◽  
pp. 1371-1376 ◽  
Author(s):  
Le Li ◽  
Zhiqin Yuan ◽  
Xinkai Peng ◽  
Lin Li ◽  
Jiantai He ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Copper Ions ◽  
Colorimetric Detection ◽  
Functionalized Gold Nanoparticles

Fast Colorimetric Detection of Copper Ions Using L-Cysteine Functionalized Gold Nanoparticles

2007 ◽  
Vol 7 (2) ◽  
pp. 712-716 ◽  
Author(s):  
Wenrong Yang ◽  
J. Justin Gooding ◽  
Zhicong He ◽  
Qiong Li ◽  
Guonan Chen
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Visual Detection ◽  
Detection Method ◽  
Copper Ions ◽  
Colorimetric Detection ◽  
Sandwich Complex ◽  
Functionalized Gold Nanoparticles

This communication reports an efficient visual detection method of Cu2+ by L-cysteine functionalized gold nanoparticles in aqueous solution. Upon exposure to Cu2+, the gold nanoparticle solution changed from red to blue, in response to surface plasmon absorption of dispersed and aggregated nanoparticles. This colorimetric sensor allows a rapid quantitative assay of Cu2+ down to the concentration range of 10−5 M. Recognition of Cu2+ and formation of the aggregates are proposed to occur via a 2 : 1 sandwich complex between L-cysteine and Cu2+.

Fast Colorimetric Detection of Copper Ions Using L-Cysteine Functionalized Gold Nanoparticles

2007 ◽  
Vol 7 (2) ◽  
pp. 712-716 ◽  
Author(s):  
Wenrong Yang ◽  
J. Justin Gooding ◽  
Zhicong He ◽  
Qiong Li ◽  
Guonan Chen
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Visual Detection ◽  
Detection Method ◽  
Copper Ions ◽  
Colorimetric Detection ◽  
Sandwich Complex ◽  
Functionalized Gold Nanoparticles

This communication reports an efficient visual detection method of Cu2+ by L-cysteine functionalized gold nanoparticles in aqueous solution. Upon exposure to Cu2+, the gold nanoparticle solution changed from red to blue, in response to surface plasmon absorption of dispersed and aggregated nanoparticles. This colorimetric sensor allows a rapid quantitative assay of Cu2+ down to the concentration range of 10−5 M. Recognition of Cu2+ and formation of the aggregates are proposed to occur via a 2 : 1 sandwich complex between L-cysteine and Cu2+.

Colorimetric detection of influenza A virus using antibody-functionalized gold nanoparticles

The Analyst ◽  
2015 ◽  
Vol 140 (12) ◽  
pp. 3989-3995 ◽  
Author(s):  
Yuanjian Liu ◽  
Linqun Zhang ◽  
Wei Wei ◽  
Hongyu Zhao ◽  
Zhenxian Zhou ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Influenza A Virus ◽  
Clinical Diagnosis ◽  
Specific Antibody ◽  
Influenza A ◽  
Colorimetric Detection ◽  
Viral Pathogen ◽  
Virus Surface ◽  
Functionalized Gold Nanoparticles

A colorimetric immunosensor for IAV based on AuNPs modified with mAb is developed. This assay depends on an ordered AuNPs structure covering the virus surface and can be applied to any viral pathogen by incorporating the appropriate pathogen-specific antibody, giving the proposed method a broad prospect in clinical diagnosis applications.

Simple Colorimetric Detection of Amyloidβ-peptide (1-40) based on Aggregation of Gold Nanoparticles in the Presence of Copper Ions

Small ◽  
2015 ◽  
Vol 11 (18) ◽  
pp. 2144-2149 ◽  
Author(s):  
Yanli Zhou ◽  
Hui Dong ◽  
Lantao Liu ◽  
Maotian Xu
Keyword(s):  
Gold Nanoparticles ◽  
Copper Ions ◽  
Colorimetric Detection

Rapid colorimetric detection of arsenic (III) by glutathione functionalized gold nanoparticles based on RGB extracting system

2021 ◽  
Vol 133 ◽  
pp. 106522
Author(s):  
Biao Zheng ◽  
Jing Li ◽  
Zhongkai Zheng ◽  
Cheng Zhang ◽  
Chunlei Huang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Functionalized Gold Nanoparticles

L-cysteine functionalized gold nanoparticles for the colorimetric detection of Hg2+induced by ultraviolet light

2009 ◽  
Vol 21 (2) ◽  
pp. 025501 ◽  
Author(s):  
Fang Chai ◽  
Chungang Wang ◽  
Tingting Wang ◽  
Zhanfang Ma ◽  
Zhongmin Su
Keyword(s):  
Gold Nanoparticles ◽  
Ultraviolet Light ◽  
Colorimetric Detection ◽  
Functionalized Gold Nanoparticles
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