Synthesis, structural characterization, and fluorescent chemosensory properties of novel molecular clips based on diethoxycarbonyl glycoluril

A pair of novel fluorescent molecular clips was synthesized from diethoxycarbonal glycoluril cyclic ether and 1,2-dihydro-indazol-3-one. Their structures and conformations were confirmed by single crystal X-ray diffraction and chemosensory properties were studied by fluorescent spectroscope. Both of them exhibited selective recognition toward Fe3+ over other metal ions examined in DMF/CH3OH (50:1, v/v).