Colorimetric sensor assay for discrimination of proteins based on exonuclease I-triggered aggregation of DNA-functionalized gold nanoparticles

The Analyst ◽  
2019 ◽  
Vol 144 (16) ◽  
pp. 4865-4870 ◽  
Author(s):  
Fangfang Jia ◽  
Qingyun Liu ◽  
Wei Wei ◽  
Zhengbo Chen
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensor ◽  
Exonuclease I ◽  
Functionalized Gold Nanoparticles

A colorimetric sensor assay for discrimination of proteins based on exonuclease I-triggered aggregation of DNA-functionalized gold nanoparticles.

Rapid and selective lead (II) colorimetric sensor based on azacrown ether-functionalized gold nanoparticles

2010 ◽  
Vol 21 (31) ◽  
pp. 315503 ◽  
Author(s):  
A Alizadeh ◽  
M M Khodaei ◽  
Ch Karami ◽  
M S Workentin ◽  
M Shamsipur ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensor ◽  
Azacrown Ether ◽  
Functionalized Gold Nanoparticles

A colorimetric sensor for determination of cysteine by carboxymethyl cellulose-functionalized gold nanoparticles

2010 ◽  
Vol 671 (1-2) ◽  
pp. 80-84 ◽  
Author(s):  
Xiaoyi Wei ◽  
Li Qi ◽  
Junjun Tan ◽  
Ruigang Liu ◽  
Fuyi Wang
Keyword(s):  
Gold Nanoparticles ◽  
Carboxymethyl Cellulose ◽  
Colorimetric Sensor ◽  
Functionalized Gold Nanoparticles

Non-enzymatic colorimetric sensor strip based on melamine-functionalized gold nanoparticles assembled on polyamide nanofiber membranes for the detection of metronidazole

2019 ◽  
Vol 11 (29) ◽  
pp. 3706-3713 ◽  
Author(s):  
Mohammed Awad Abedalwafa ◽  
Yan Li ◽  
Chunfang Ni ◽  
Gang Yang ◽  
Lu Wang
Keyword(s):  
Gold Nanoparticles ◽  
Color Change ◽  
High Sensitivity ◽  
Colorimetric Sensor ◽  
Eye Detection ◽  
Naked Eye ◽  
Functionalized Gold Nanoparticles ◽  
Sensitivity And Selectivity ◽  
Nanofiber Membranes ◽  
Naked Eye Detection

Non-enzymatic colorimetric sensor strip for detection of metronidazole (MTZ) was designed and constructed, with high sensitivity and selectivity. Which can be used for naked-eye detection of MTZ with a visible color change from pink to purple.

The highly sensitive and facile colorimetric detection of the glycidyl azide polymer based on propargylamine functionalized gold nanoparticles using click chemistry

2015 ◽  
Vol 51 (60) ◽  
pp. 12092-12094 ◽  
Author(s):  
Yi He ◽  
Yun Liang ◽  
Dunju Wang
Keyword(s):  
Gold Nanoparticles ◽  
Click Chemistry ◽  
Colorimetric Detection ◽  
Colorimetric Sensor ◽  
Glycidyl Azide Polymer ◽  
Functionalized Gold Nanoparticles ◽  
Highly Sensitive ◽  
Glycidyl Azide

A highly sensitive and facile colorimetric sensor for the glycidyl azide polymer explosive was developed based on propargylamine functionalized gold nanoparticles using click chemistry.

scholarly journals Mercaptosuccinic-Acid-Functionalized Gold Nanoparticles for Highly Sensitive Colorimetric Sensing of Fe(III) Ions

Chemosensors ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 290
Author(s):  
Nadezhda S. Komova ◽  
Kseniya V. Serebrennikova ◽  
Anna N. Berlina ◽  
Svetlana M. Pridvorova ◽  
Anatoly V. Zherdev ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Drinking Water ◽  
Detection Limit ◽  
Analytical Signal ◽  
Colorimetric Sensor ◽  
World Health ◽  
Colorimetric Sensing ◽  
Functionalized Gold Nanoparticles ◽  
Mercaptosuccinic Acid ◽  
Highly Sensitive

The development of reliable and highly sensitive methods for heavy metal detection is a critical task for protecting the environment and human health. In this study, a qualitative colorimetric sensor that used mercaptosuccinic-acid-functionalized gold nanoparticles (MSA-AuNPs) to detect trace amounts of Fe(III) ions was developed. MSA-AuNPs were prepared using a one-step reaction, where mercaptosuccinic acid (MSA) was used for both stabilization, which was provided by the presence of two carboxyl groups, and functionalization of the gold nanoparticle (AuNP) surface. The chelating properties of MSA in the presence of Fe(III) ions and the concentration-dependent aggregation of AuNPs showed the effectiveness of MSA-AuNPs as a sensing probe with the use of an absorbance ratio of A530/A650 as an analytical signal in the developed qualitative assay. Furthermore, the obvious Fe(III)-dependent change in the color of the MSA-AuNP solution from red to gray-blue made it possible to visually assess the metal content in a concentration above the detection limit with an assay time of less than 1 min. The detection limit that was achieved (23 ng/mL) using the proposed colorimetric sensor is more than 10 times lower than the maximum allowable concentration for drinking water defined by the World Health Organization (WHO). The MSA-AuNPs were successfully applied for Fe(III) determination in tap, spring, and drinking water, with a recovery range from 89.6 to 126%. Thus, the practicality of the MSA-AuNP-based sensor and its potential for detecting Fe(III) in real water samples were confirmed by the rapidity of testing and its high sensitivity and selectivity in the presence of competing metal ions.

PEGylated NALC-functionalized gold nanoparticles for colorimetric discrimination of chiral tyrosine

The Analyst ◽  
2020 ◽  
Vol 145 (22) ◽  
pp. 7397-7405
Author(s):  
Xin-Yue Chen ◽  
Wei Ha ◽  
Xiao-Jie Jin ◽  
Yan-Ping Shi
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensor ◽  
Chiral Discrimination ◽  
Functionalized Gold Nanoparticles ◽  
Functionalized Aunps

Acid and matrix-tolerant PEG/NALC-functionalized AuNPs were constructed as a colorimetric sensor for visual chiral discrimination and determination of Tyr enantiomers.

Colorimetric Sensor for Zn(II) Using Induced Aggregation of Functionalized Gold Nanoparticles

2015 ◽  
Vol 36 (9) ◽  
pp. 2408-2410 ◽  
Author(s):  
Se Hwa Jung ◽  
Sung Ho Jung ◽  
Ji Ha Lee ◽  
Mingyu Je ◽  
Myong Yong Choi
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Sensor ◽  
Functionalized Gold Nanoparticles ◽  
Induced Aggregation
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