Abstract
Cascade recognition of trivalent chromium cation (Cr3+) and fluoride anion (F−) via rhodamine-urea methacrylate-based fluorescent probe (RhBUA) and its subsequent cationic complex was reported. The non-fluorescent rhodamine derivatives can selectively detect Cr3+ cation over some other metal ions in CH3CN–H2O (90/10, v/v, pH 7.0) solutions with a 1:1 stoichiometry, leading to prominent fluorescence OFF–ON switching. The obtained RhBUA–Cr3+ complex can subsequently serve as a sensitive and selective chemosensor for F− ion. Complete signal quenching (fluorescence ON–OFF switching) can also be observed, ascribing to the extraction of Cr3+ cation and the resulting deformation of RhBUA–Cr3+ complex.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call