Fluorescein Derivative Immobilized Optical Hydrogels: Fabrication and Its Application for Detection of H 2 O 2 .

A novel fluorescein-based probe FLA-Boe was developed for detecting H ₂ O ₂ . Modified by 2-Bromomethylphenylboronic acid pinacol ester, FLA-Boe is a Fluorescein derivative with eminent photostability and remarkable H ₂ O ₂ sensitivity and selectivity. FLA-Boe was utilized to synthesize hydrogel sensors in the manner of guest-host interaction by taking advantage of its aforementioned features. The hydrogel sensor can be used to detect H ₂ O ₂ effectively in both flowing and static water environments with satisfactory performance. It is expected that this application may open a new page to develop a neoteric fluorescent property analysis method aiming at H ₂ O ₂ detection.