Inverted Cucurbit[7] Uril -Induced Supramolecular Fluorescence Enhancement in Hemicyaninedye and its Analysis Application

The self-assembly between inverted cucurbit[7]uril (iQ[7]) and hemicyanine dye under different pH conditions was studied. The supramolecular dye complexes could be reversibly switched under acidic and neutral conditions. Moreover, the “OFF−ON−OFF” behavior of the host–guest complexes with the alternating addition of H+ and OH– has been utilized to develop a model INHIBIT logic gate. Furthermore, they are responsive to specific chemical stimuli.