Fluorescein Derivative Immobilized Optical Hydrogels: Fabrication and Its Application for Detection of HO.

A novel fluorescein-based probe was developed for detecting HO. Modified by 2-Bromomethylphenylboronic acid pinacol ester, is a Fluorescein derivative with eminent photostability and remarkable HO sensitivity and selectivity. was utilized to synthesize hydrogel sensors in the manner of guest-host interaction by taking advantage of its aforementioned features.

Highly efficient and selective supramolecular hydrogel sensor based on rhodamine 6G derivatives.

A mercury ion sensitive fluorescent functional monomer was synthesized based on rhodamine 6G, and two highly-effective approaches about the research and development of novel macroscopic hydrogel sensor were reported. The monomer was utilized to synthesize hydrogel sensors by free radical polymerization and guest-host interaction. Hydrogel sensors have prominent selectivity to Hg and can be tailored and reused, which are capable of detecting Hg sensitively in flowing and standing water environment with satisfactory performance.