Applications of fluorescent biosensors based on quantum dots

Abstract

In modern analytical sciences, fluorescent biosensors are widely used because of their have high sensitivity, high selectivity and stability. Quantum dots (QDs) are a kind of new semiconductor materials which are popular in recent years, which have been widely used in bioimaging, sensing, drug delivery and photocatalysis. QDs have unique and excellent photoelectric characteristics, and are mainly composed of II-VI period element. Due to its good biocompatibility, high stability, excellent water solubility and easy surface modification, the prepared QDs come from a wide range of sources and are considered to be good fluorescent probes for the development of a diverse of fluorescent biosensors. This research describes the progress of fluorescent biosensors based on QDs in recent years, focusing on the three mechanisms and applications in detection, such as the detection of glucose, uric acid and cell apoptosis. And this research also looks forward to the future development trend of QDs-based fluorescent biosensors.