Quantum material accompanied nonenzymatic cascade amplification for ultrasensitive photoelectrochemical DNA sensing

2017 ◽  
Vol 5 (37) ◽  
pp. 7775-7780 ◽  
Author(s):  
Guangming Wen ◽  
Xiaojie Yang ◽  
Yongzhao Wang
Keyword(s):  
Quantum Dots ◽  
Signal Amplification ◽  
Dna Detection ◽  
Dna Sensing ◽  
Target Dna ◽  
Cascade Amplification

A novel cascade photoelectrochemical (PEC) signal amplification sensing strategy was designed and applied in target DNA detection by introducing quantum dots (QD) as the accompanying tag.

Fabrication of fluorescence enhancement of quantum dots on a gold colloid formed film for oligonucleotide DNA detection

2017 ◽  
Vol 9 (3) ◽  
pp. 434-442 ◽  
Author(s):  
Jie Yang ◽  
Ji-Tao Song ◽  
Wei Hu ◽  
Yan Huang ◽  
Li-Juan Deng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Fluorescence Enhancement ◽  
Dna Detection ◽  
Gold Colloid ◽  
Target Dna

This paper reported a method based on metal-enhanced quantum dot fluorescence on a gold colloid formed film for target DNA detection.

scholarly journals Sensitive DNA detection using cascade amplification strategy based on conjugated polyelectrolytes and hybridization chain reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3528-3533 ◽  
Author(s):  
Biqing Bao ◽  
Jin Zhu ◽  
Lina Gong ◽  
Jia Chen ◽  
Yanrui Pan ◽  
...  
Keyword(s):  
Signal Amplification ◽  
Dna Detection ◽  
Hybridization Chain Reaction ◽  
Molecular Wire ◽  
Conjugated Polyelectrolytes ◽  
Chain Reaction ◽  
Amplification Strategy ◽  
Cascade Amplification

A novel cascade amplification strategy that combines the molecular wire effects of CPEs with the signal amplification capability of the HCR has been developed for sensitive DNA detection.

Nanosurface energy transfer indicating Exo III-propelled stochastic 3D DNA walkers for HIV DNA detection

The Analyst ◽  
2021 ◽  
Author(s):  
Na Wang ◽  
Yong Jian Jiang ◽  
Xu Zhang ◽  
Hua Rong Lin ◽  
Feng Cheng ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Signal Amplification ◽  
Dna Detection ◽  
Hiv Dna ◽  
Dna Walker ◽  
Exo Iii ◽  
Dna Walkers

An Exo III-propelled stochastic 3D DNA walker based on nanosurface energy transfer was developed for enzyme-assisted DNA detection with signal amplification.

Highly sensitive lung cancer DNA detection via GO enhancing eATRP signal amplification

2021 ◽  
Vol 160 ◽  
pp. 105766
Author(s):  
Qianrui Liu ◽  
Jingliang Liu ◽  
Huaixia Yang ◽  
Xuchun Wang ◽  
Jinming Kong ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Signal Amplification ◽  
Dna Detection ◽  
Highly Sensitive

Signal amplification for DNA detection based on the HRP-functionalized Fe3O4 nanoparticles

Talanta ◽  
2011 ◽  
Vol 84 (2) ◽  
pp. 531-537 ◽  
Author(s):  
Xiao-Ya Dong ◽  
Xiao-Na Mi ◽  
Bo Wang ◽  
Jing-Juan Xu ◽  
Hong-Yuan Chen
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Signal Amplification ◽  
Dna Detection

Sensitive mutant DNA biomarker detection based on magnetic nanoparticles and nicking endonuclease assisted fluorescence signal amplification

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 20020-20024 ◽  
Author(s):  
Na Li ◽  
Zhong Feng Gao ◽  
Bei Hua Kang ◽  
Nian Bing Li ◽  
Hong Qun Luo
Keyword(s):  
Magnetic Nanoparticles ◽  
Signal Amplification ◽  
Fluorescence Signal ◽  
Biomarker Detection ◽  
Background Signal ◽  
Sensitive Mutant ◽  
Nicking Endonuclease ◽  
Low Background ◽  
Target Dna ◽  
Fluorescence Signal Amplification

Amplified fluorescence target DNA detection was developed combining nicking endonuclease assisted target recycling and magnetic nanoparticles with low background signal.

Quantum Dots as Components of Electrochemical Sensing Platforms for the Detection of Environmental and Food Pollutants: a Review

2017 ◽  
Vol 100 (4) ◽  
pp. 950-961 ◽  
Author(s):  
María Pedrero ◽  
Susana Campuzano ◽  
José M Pingarrón
Keyword(s):  
Quantum Dots ◽  
Signal Amplification ◽  
Cost Effective ◽  
Ease Of Use ◽  
Electrochemical Sensing ◽  
Multiplexed Detection ◽  
Sensing Platforms ◽  
Target Analytes

Abstract The determination of organic and inorganic environmental and food pollutants is a key matter of concern in analytical chemistry due to their effects as a serious threat to human health. Focusing on this issue, several methodologies involving the use of nanostructured electrochemical platforms have been recently reported in the literature. Among these methods, those employing the use of quantum dots (QDs) stand out because of features such as signal amplification, good reproducibility and selectivity, and the possibility for multiplexed detection, and because they preserve the outstanding characteristics of electrochemical methodologies with respect to simplicity, ease-of-use, and cost-effective instrumentation. This review describes recent electrochemical strategies, in which design QDs play a key role, for the determination of pollutants in food and environmental samples. The particular role of QDs in the reported methodologies, their preparation, and the electrochemical platform design, as well as the advantages that QDs provide in the analysis of target analytes, are critically discussed.

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