Ratiometric rapid distinction of two structurally similar fluoroquinolone antibiotics by a Tb/Eu hydrogel

Abstract

Rapid distinction of structurally similar fluoroquinolone antibiotics norfloxacin and ofloxacin, and their quantification in a mixture, were achieved using a supramolecular Tb/Eu gel cocktail.

A sensitive paper-based sensor for fluoride detection in water using Tb3+ photoluminescence

“…35 This strategy has been used for the detection of various drug molecules, 36 gallate-derived green tea polyphenols, 37 and fluoroquinolone antibiotics. 38 Our group has also discovered a novel “ pro -sensitizer” based approach to detect various enzymes 39 and small molecules. 40 Here, 2,3-dihydroxynaphthalene ( 1 ) is one of the sensitizers that enhance Tb 3+ luminescence in TbCh gel, whereas molecules with structural modification of 1 at the hydroxyl group showed only weak sensitization.…”

Paper-based sensing of phytotoxicant gossypol in aqueous media through turn-on visible-light emitting lanthanide-luminescence

“…37 Tb-Ch gel is flexible and easily processable, and at the same time, it does not flow like a liquid, hence it can be drop cast on filter paper discs by simple pipettization. 38,39 Circular paper discs were made from western blotting paper (0.83 mm thick) using a hole punch (diameter = 0.45 cm). When 20 mL Tb 3+ -Ch gel (5/15 mM) gel was drop cast on it, the hydrogels were well absorbed on the filter paper.…”