Allergen immobilisation and signal amplification by quantum dots for use in a biosensor assay of IgE in serum

2014 ◽  
Vol 52 ◽  
pp. 82-88 ◽  
Author(s):  
Geoffrey W. Platt ◽  
Francesco Damin ◽  
Marcus J. Swann ◽  
Isabelle Metton ◽  
Gilbert Skorski ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Signal Amplification

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.

scholarly journals Nanobioconjugates for Signal Amplification in Electrochemical Biosensing

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3542
Author(s):  
Sebastian Cajigas ◽  
Jahir Orozco
Keyword(s):  
Quantum Dots ◽  
Hybrid Materials ◽  
Critical Review ◽  
Signal Amplification ◽  
Noble Metals ◽  
Detection Limits ◽  
Future Perspectives ◽  
Electrochemical Biosensing ◽  
Signal Response

Nanobioconjugates are hybrid materials that result from the coalescence of biomolecules and nanomaterials. They have emerged as a strategy to amplify the signal response in the biosensor field with the potential to enhance the sensitivity and detection limits of analytical assays. This critical review collects a myriad of strategies for the development of nanobioconjugates based on the conjugation of proteins, antibodies, carbohydrates, and DNA/RNA with noble metals, quantum dots, carbon- and magnetic-based nanomaterials, polymers, and complexes. It first discusses nanobioconjugates assembly and characterization to focus on the strategies to amplify a biorecognition event in biosensing, including molecular-, enzymatic-, and electroactive complex-based approaches. It provides some examples, current challenges, and future perspectives of nanobioconjugates for the amplification of signals in electrochemical biosensing.

scholarly journals Impedimetric detection of Banana bunchy top virus using CdSe quantum dots for signal amplification

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
S. Majumder ◽  
Bhaskar Bhattacharya ◽  
Pramod K. Singh ◽  
Shivangi Johari ◽  
Bharat Singh ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Signal Amplification ◽  
Cdse Quantum Dots ◽  
Banana Bunchy Top Virus
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