title: Multimodal metal cation sensing with bis(macrocyclic) dye.
abstract: The synthesis, electrochemical, optical, and cation sensing properties of a bis(macrocyclic) dye 1, in which the benzo-15-crown-5 and phenylazathia-15-crown-5 subunits are linked through a styryl pyridinium moiety, are reported. In this new ditopic receptor, the benzo-15-crown-5 macrocycle acts as a highly selective binding site for alkaline earth metal cations (Mg(II) and Ba(II)), whereas the phenylazathia-15-crown-5 displays a strong binding affinity towards soft heavy-metal cations (Hg(II) and Ag(I)). The pronounced changes of the absorption and fluorescence spectra of this bichromophoric dye observed upon different metal cation addition make the dye suitable for dual-wavelength analysis and offer an enticing potential for multitasking sensors.
authors: CNRS UMR, Universit Lille Nord de France, Lille, France.
authors: Elena
authors: E
authors: Tulyakova
authors: Stephanie
authors: S
authors: Delbaere
authors: Yuri
authors: Y
authors: Fedorov
authors: Gedaminas
authors: G
authors: Jonusauskas
authors: Anna
authors: A
authors: Moiseeva
authors: Olga
authors: O
authors: Fedorova
mesh_terms: D002412:Cations / Q000737:chemistry; D004396:Coloring Agents / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry; D043844:Crown Ethers / Q000737:chemistry; D055664:Electrochemical Techniques; D047028:Macrocyclic Compounds / Q000737:chemistry*; D008673:Metals, Alkaline Earth / Q000737:chemistry*; D010084:Oxidation-Reduction; D013050:Spectrometry, Fluorescence
chemical_list: D002412:Cations; D004396:Coloring Agents; D056831:Coordination Complexes; D043844:Crown Ethers; D047028:Macrocyclic Compounds; D008673:Metals, Alkaline Earth; C042148:15-crown-5