Abstract
Accurate detection of Cysteine (Cys) in cells is critical for clinical diagnosis and pathogen detection. It was of practical significance to develop fluorescent probes with specific recognition and rapid detection of Cys. Therefore, based on the nucleophile reaction and intramolecular cyclization reaction between biothiols and acrylates (AAS), a fluorescence probe, BTY-TPE-AAS, was designed and synthesized by combining the advantages of the Aggregation-Induced Emission (AIE) and Excited-State Intramolecular Proton Transfer (ESIPT) mechanisms. BTY-TPE-AAS could specifically detect Cys with a short detection time and strong anti-interference, which had important application value in the monitoring of Cys in the biomedical field. It provided some reference values for the design of a specific fluorescent probe for Cys detection.
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