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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.

SUBMITTER: Jeon YM

PROVIDER: S-EPMC3241529 | biostudies-literature | 2008 Sep

REPOSITORIES: biostudies-literature

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Pyrene-Appended Fluorescent Tweezers Generated via the Weak-Link Approach and Their Halide Recognition Properties.

Jeon You-Moon YM Kim Dongwoo D Mirkin Chad A CA Golen James A JA Rheingold Arnold L AL

Tetrahedron 20080901 36

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 C ...[more]

PMID: 22180669

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