关键词: 香豆素, 传感器, 选择性, 配合物, 香豆素, 传感器, 选择性, 配合物

Abstract: Metal ions have a significant impact on the environment and the growth and development of organism，therefore，the recognition and detection of metal ions in the environment and organism is gaining widespread attention. Among different analytical methods，fluorescence analysis has the advantages of high sensitivity，good selectivity，real-time and in situ detection，etc.，which is a good tool to achieve the recognition and detection of metal ions in the environment and organism. This paper is aimed to review the coumarin-based fluorescent sensors for the recognition and detection of heavy metal ions (Hg2+、Pb2+、Cd2+、Ni2+、Ag+)，biologically important transition metal ions (Cu2+、Zn2+、Fe3+) and their applications in recent five years，focusing on the design and synthesis of sensors，recognition mechanism，sensing characteristics and applications. With the higher requirement for metal ions detection，the design of coumarin-based fluorescent sensors will be developed for better performance with higher sensitivity，selectivity and stronger anti-interference in the future. In addition，applications of coumarin-based fluorescent sensors in biological detection are expected to be further developed.

Key words: coumarin, sensor, selectivity, complexes, coumarin, sensor, selectivity, complex