10.6084/m9.figshare.2068767.v1 Evgeny A. Kataev Evgeny A. Kataev Nanett Backmann Nanett Backmann Tatiana A. Shumilova Tatiana A. Shumilova Tobias Rüffer Tobias Rüffer Heinrich Lang Heinrich Lang Calix[4]pyrroles bearing quinolinium moiety for halide sensing in aqueous solution Taylor & Francis Group 2016 calix[4]pyrrole anion binding quinolinium fluorescence quenching fluorescent probe 2016-01-29 21:50:08 Journal contribution https://tandf.figshare.com/articles/journal_contribution/Calix_4_pyrroles_bearing_quinolinium_moiety_for_halide_sensing_in_aqueous_solution/2068767 <p>Sensing of chloride in aqueous solution with high selectivity is a challenging task and has a great potential for cellular imaging and analytical applications in food chemistry. Supramolecular binding motif calix[4]pyrrole has been conjugated with a known fluorescent probe for chloride – a quinolinium dye - through conformationally flexible and rigid linkers. Effects of the supramolecular host on the properties of the fluorescent dye and <i>vice versa</i> have been investigated by NMR, X-ray crystallographic and spectroscopic methods. New fluorescent probes have demonstrated better binding and quenching properties towards chloride, bromide and iodide in a 1:1 water-methanol mixture as compared to free calix[4]pyrrole and the quinolinium dye.</p>