A Fluorescent and Colorimetric Chemosensor for Hg2+ Based on Rhodamine 6G With a Two-Step Reaction Mechanism
Cui‐Bing Bai, Weigang Wang, Jie Zhang, Chang Wang, Rui Qiao, Biao Wei, Lin Zhang, Shui-Sheng Chen, Yang Song
Abstract
A fluorescent and colorimetric chemosensor L based on rhodamine 6G was designed, synthesized, and characterized. Based on a two-step reaction, the chemosensor L effectively recognized Hg2+. The interaction between the chemosensor and Hg2+ was confirmed by ultraviolet–visible spectrophotometry, fluorescence spectroscopy, electrospray ionization–mass spectrometry, Fourier-transform infrared spectroscopy, and frontier molecular orbital calculations. The chemosensor L was also incorporated into test strips and silica gel plates, which demonstrated good selectivity and high sensitivity for Hg2+.
Topics & Concepts
Rhodamine 6GChemistryFluorescencePhotochemistryFourier transform infrared spectroscopyMass spectrometryElectrospray ionizationUltraviolet visible spectroscopyRhodamineUltravioletFluorescence spectroscopyMaterials scienceMoleculeChromatographyOrganic chemistryPhysicsOptoelectronicsQuantum mechanicsMolecular Sensors and Ion DetectionAdvanced biosensing and bioanalysis techniquesLuminescence and Fluorescent Materials