Among various important anionic analytes, fluoride is one of the most significant anions due to its critical role in dental care and treatment of osteoporosis; therefore, fluoride binding and recognition by synthetic receptors is attracting a growing interest. Fluoride is found more frequently in different sources of water but with higher concentrations in groundwater due to the presence of fluoride-bearing minerals. Because of duplicitous nature of fluoride, it is important to design the artificial receptor for extracting, removing and separating this particular anion from fluoride-bearing minerals or fluoride containing systems. During this study, we have synthesized a new p-cyano based bis-urea receptor from the reaction of 2,2'-Diamino-N-methyldiethylamine with p-cyano isocyanate under refluxed condition in CH2Cl2. In the solid state, the bis-urea receptor binds halides through N-H���halide interactions. In solution, the host binds the halides with an order of I-<Br-<Cl-<<F-. In this poster, the detailed studies of this receptor for halides will be discussed.

New dipodal urea-based receptor for selective binding of fluoride

247th National Meeting (2014)

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