A Novel Fluorescent Sensor for Fe(3+) Based on a Quinoline Derivative

A new fluorescent sensor for detecting Fe(3+) was developed based on chemical modification of the quinoline group. Titration experiments showed that the sensor exhibits high selectivity and sensitivity toward Fe(3+), even in complex systems. The recognition mechanism was verified through theoretical calculations, demonstrating that the sensor can perform qualitative and quantitative analysis on Fe(3+). The cell imaging and zebrafish imaging experiments further prove the potential application of the sensor in the field of bioluminescence imaging.