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Bis(diazacrown ether)-bisanthraquinones such as the cryptand represented in 5, and related anthraquinone-diazacrown ether oligomers like 2-4 or 6 have been prepared and their potential for electrochemically-switched enhanced ion binding ability were evaluated. The presence of two or more quinone units close to the complexation site which act cooperatively in cation binding allows enhanced values for...
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