Application of Quantum Dots in Electrochemical Biosensors

Quantum dots(QDs) have attracted enormous Interest due to their many novel properties such as unique optical, electrochemical and electrochemical luminescence properties One of the most active trends is the application of QDs in electrochemical and biological sensing, due to their high surface-to-volume ratio, high reactivity and small size Slight changes in the external environment will lead to significant changes in particle valence and electron transfer Based on these significant changes, QDs can be used to construct electrochemical biosensor with biological macromolecules, which is characterized by high sensitivity, rapid response and high selectivity In this article, we review their applications in electrochemical luminescence sensors, immunosensors, DNA sensors, protein sensors, pesticide sensors and carbohydrate sensors Meanwhile, the prospects and research directions of QDs are given based on the analysis of this research field