Research Progress on the Construction and Application of Macrocyclic Fluorescent Sensing Platform Based on Indicator Displacement Assay
Supramolecular fluorescent sensors can address various detection and bioimaging issues related to the environment and human health.Indicator displacement assay(IDA)is a supramolecular fluorescence sensing method that can convert the chemical changes caused by molecular recognition into easily observed fluorescence signals.It provides a unique and innovative sensing method for the detection of analytes.In recent years,IDA based on non-covalent binding has been developed rapidly due to its advantages of high sensitivity,adjustability,real-time,and low synthesis effort.In order to meet the diverse needs of IDA development,a variety of supramolecular macrocyclic hosts have been involved in the construction of IDA sensors,such as calix[n]arenes,cucurbit[n]uril,pillar[n]arenes,etc.The recent research progress in this field based on different classes of macrocycles is briefly reviewed,focusing on the application in biochemical sensing,and providing a reference for the construction and application of novel fluorescent biochemical sensing platforms based on IDA in the future.