Instilling exploitable INHIBIT logic gate response for F−/H+ in ‘end-off’ anthracene-diamine hybrid by simple functional group manipulation: Experimental study aided by DFT calculations

A spectroscopic probe for hypochlorous acid detection

A spectroscopic probe CMBT was synthesized and characterized. CMBT showed the specific recognition for HClO based on the turn-on blue fluorescence and naked-eye change from pink to colorless. NMR, IR, HRMS-ESI, and spectral analysis suggested that colorimetric and fluorescent change of CMBT to HClO originated from the conversion of CMBT to starting material coumarin-aldehyde 1 caused by the oxidization of HClO, which was responsible for the fluorescence recovery. The detection limit was calculated to be 1.61 μM and 6.58 μM for fluorescence and UV-vis analysis with a range up to 1 mM. HClO's fluorescence detection was successfully achieved in tap and river water samples. The prepared convenient paper test strips showed a distinct color change in varying concentrations of HClO. A multi-input molecular logic circuit was constructed.

A macrocyclic tetranuclear ZnII complex as a receptor for selective dual fluorescence sensing of F− and AcO−: effect of a macrocyclic ligand

Fluorimetric detection of F⁻/AcO⁻ with an additional ‘INHIBIT’ logic gate response for F⁻/H⁺ and AcO⁻/H⁺ in an aqueous-methanol medium by a 48-membered macrocyclic Zn^II-complex DAS has been explored by combined experimental and theoretical study.