title: Lithium-selective phosphine oxide-based ditopic receptors show enhanced halide binding upon alkali metal ion coordination.
abstract: Previous work on a ditopic receptor based on a tripodal phosphine oxide core demonstrated preferential enhancement of bromide binding over chloride or iodide in the presence of lithium cation. Current studies on an elongated receptor provide evidence that preferential bromide binding enhancement in the presence of lithium cation is common to this receptor class in general, and that lengthening of the receptor results in an overall increase in halide association. Furthermore, the extended receptor shows a strong preference for Li+binding in solution.
authors.affiliation: Department of Chemistry and the Materials Science Institute, University of Oregon, Eugene, OR 97403-1253, USA.
authors.forename: Jesse V
authors.initials: JV
authors.lastname: Gavette
authors.forename: Juven
authors.initials: J
authors.lastname: Lara
authors.forename: Linda L
authors.initials: LL
authors.lastname: Reling
authors.forename: Michael M
authors.initials: MM
authors.lastname: Haley
authors.forename: Darren W
authors.initials: DW
authors.lastname: Johnson