A ratiometric fluorescent probe for ferric ion based on a 2,2′-bithiazole derivative and its biological applications

A new bithiazole-based ratiometric fluorescent chemosensor L exhibits high sensitivity and selectivity toward Fe3+. The detection limit for Fe3+ is found to be 0.6 μM. The living cell and zebrafish imaging experiments demonstrate its value on the practical applications for biological systems.