title: Pyrene-Appended Fluorescent Tweezers Generated via the Weak-Link Approach and Their Halide Recognition Properties.
abstract: Through the Weak-Link Approach, fluorescent condensed and open Cu(I) tweezer complexes were prepared and characterized. These complexes exhibit fluorescence-sensitive binding properties for halide anions. The solid-state structure of a non-fluorescent Rh(I) tweezer analogue, determined by X-ray crystallography, shows that the counter anion, Cl(-), is trapped in between the two amide groups of the tweezer arms through hydrogen bonds. Although the tweezer binds Cl(-), the open complex also binds Cl(-), showing that the main role of the metal is to increase the local concentration of the pyrenyl amide moieties so that 2:1 binding can take place.
authors.affiliation: Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113.
authors.forename: You-Moon
authors.initials: YM
authors.lastname: Jeon
authors.forename: Dongwoo
authors.initials: D
authors.lastname: Kim
authors.forename: Chad A
authors.initials: CA
authors.lastname: Mirkin
authors.forename: James A
authors.initials: JA
authors.lastname: Golen
authors.forename: Arnold L
authors.initials: AL
authors.lastname: Rheingold