scholarly journals Highly sensitive colorimetric detection of 17β-estradiol using split DNA aptamers immobilized on unmodified gold nanoparticles

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Jinchuan Liu ◽  
Wenhui Bai ◽  
Shucao Niu ◽  
Chao Zhu ◽  
Shuming Yang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Dna Aptamers ◽  
Highly Sensitive ◽  
17Β Estradiol

Zwitterionic peptide-capped gold nanoparticles for colorimetric detection of Ni2+

Nanoscale ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 5466-5473 ◽  
Author(s):  
Attasith Parnsubsakul ◽  
Sukunya Oaew ◽  
Werasak Surareungchai
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Sensitive Detection ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Recyclable zwitterionic peptide-capped AuNPs for highly sensitive detection of Ni2+.

scholarly journals Highly Sensitive and Selective Colorimetric Detection of Methylmercury Based on DNA Functionalized Gold Nanoparticles

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2679 ◽  
Author(s):  
Zheng-Jun Xie ◽  
Xian-Yu Bao ◽  
Chi-Fang Peng
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Limit Of Detection ◽  
Low Cost ◽  
Colorimetric Detection ◽  
Colorimetric Method ◽  
Optimal Conditions ◽  
Surface Deposition ◽  
Highly Sensitive ◽  
Dna Strand

A new colorimetric detection of methylmercury (CH3Hg+) was developed, which was based on the surface deposition of Hg enhancing the catalytic activity of gold nanoparticles (AuNPs). The AuNPs were functionalized with a specific DNA strand (HT7) recognizing CH3Hg+, which was used to capture and separate CH3Hg+ by centrifugation. It was found that the CH3Hg+ reduction resulted in the deposition of Hg onto the surface of AuNPs. As a result, the catalytic activity of the AuNPs toward the chromogenic reaction of 3,3,5,5-tetramethylbenzidine (TMB)-H2O2 was remarkably enhanced. Under optimal conditions, a limit of detection of 5.0 nM was obtained for CH3Hg+ with a linear range of 10–200 nM. We demonstrated that the colorimetric method was fairly simple with a low cost and can be conveniently applied to CH3Hg+ detection in environmental samples.

scholarly journals Erratum: Xie, Z.-J.; Bao, X.-Y.; Peng, C.-F. Highly Sensitive and Selective Colorimetric Detection of Methylmercury Based on DNA-Functionalized Gold Nanoparticles. Sensors 2018, 18, 2679.

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3135
Author(s):  
Zheng-Jun Xie ◽  
Xian-Yu Bao ◽  
Chi-Fang Peng
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Functionalized Gold Nanoparticles ◽  
Highly Sensitive

The authors wish to make the following corrections to their paper [...]

scholarly journals A simple, fast and highly sensitive colorimetric detection of zein in aqueous ethanol via zein–pyridine–gold interactions

2015 ◽  
Vol 51 (86) ◽  
pp. 15736-15738 ◽  
Author(s):  
Alejandro Latorre-Sanchez ◽  
Jose A. Pomposo
Keyword(s):  
Gold Nanoparticles ◽  
Aqueous Ethanol ◽  
Colorimetric Detection ◽  
Single Chain ◽  
Corn Protein ◽  
Highly Sensitive

Formation of gold nanoparticles in aqueous ethanol in the presence of pyridine-functionalized single-chain nanoparticles allows for the fast and highly sensitive colorimetric detection of zein corn protein.

Anisotropic gold nanoparticles for the highly sensitive colorimetric detection of glucose in human urine

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40849-40855 ◽  
Author(s):  
Abhishek Chaudhary ◽  
Abhishek Gupta ◽  
Chayan Kanti Nandi
Keyword(s):  
Gold Nanoparticles ◽  
Human Urine ◽  
Colorimetric Detection ◽  
Highly Sensitive ◽  
Anisotropic Gold Nanoparticles

PEDOT:PSS modified anisotropic gold nanoparticles (GNP) for the colorimetric detection of glucose in urine.

Highly Sensitive Aptamer-Based Colorimetric Detection of Melamine in Raw Milk with Cysteamine-Stabilized Gold Nanoparticles

2017 ◽  
Vol 17 (2) ◽  
pp. 853-861 ◽  
Author(s):  
Hongru Zheng ◽  
Ying Li ◽  
Jingyue Xu ◽  
Jiaxin Bie ◽  
Xin Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Raw Milk ◽  
Highly Sensitive

Highly sensitive and selective colorimetric detection of Hg2+ based on the separation of Hg2+ and formation of catalytic DNA–gold nanoparticles

2016 ◽  
Vol 8 (5) ◽  
pp. 1021-1025 ◽  
Author(s):  
Chi-Fang Peng ◽  
Na Pan ◽  
Zheng-Jun Xie ◽  
Liang-Liang Wu
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Water Samples ◽  
Colorimetric Detection ◽  
Highly Sensitive ◽  
Catalytic Dna

Hg2+ ions can be absorbed onto a DNA–AuNP complex and separated from water samples while the catalytic activity of DNA–AuNPs can be promoted.

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