An Imidazolium‐Based Fluorescent Cyclophane for the Selective Recognition of Iodide

For your I's only: A new imidazolium-based fluorescent cyclophane 1 was designed and synthesized that was quenched selectively in the presence of iodide but not other anions, as assessed by fluorimetry. In addition, fluorescence titration experiments, 1H NMR spectroscopic data, and theoretical calculations provide evidence that 1 encapsulates two iodides inside its cavity.