1 research outputs found
Tetrafluoroterephthalonitrile as an anionâÏ donor: theoretical evaluation and application to anion recognition
International audienceThe ability of perfluorinated terephthalonitrile to act as an anionâÏ donor fragment in anion receptors is evaluated. New receptors combining an urea and a perfluorinated terephthalonitrile motif into a single architecture have been designed and synthesized. Their molecular recognition properties towards Cl , Br and I , have been studied in solution by means of 1 H and 19 FâNMR as well as photophysical experiments. A complementary electrospray ionizationâtandem mass spectrometry study confirmed the ranking of recognition properties between the receptors. A further theoretical evaluation of binding properties confirmed the association constant trend and suggests a main contribution of the urea motif weakly complemented by a ηâtype anionâÏ interaction