Home > Publications database > A Charge-Neutral Self-Assembled L$_2$Zn$_2$ Helicate as Bench-Stable Receptor for Anion Recognition at Nanomolar Concentration > print

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024 7 _ |a 10.1021/jacs.2c08579
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100 1 _ |a Van Craen, David
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245 _ _ |a A Charge-Neutral Self-Assembled L$_2$Zn$_2$ Helicate as Bench-Stable Receptor for Anion Recognition at Nanomolar Concentration
260 _ _ |a Washington, DC
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520 _ _ |a The field of anion recognition chemistry is dominated by two fundamental approaches to design receptors. One relies on the formation of covalent bonds resulting in organic and often neutral host species, while the other one utilizes metal-driven self-assembly for the formation of charged receptors with well-defined nanocavities. Yet, the combination of their individual advantages in the form of charge-neutral metal-assembled bench-stable anion receptors is severely lacking. Herein, we present a fluorescent and uncharged double-stranded hydroxyquinoline-based zinc(II) helicate with the ability to bind environmentally relevant dicarboxylate anions with high fidelity in dimethyl sulfoxide (DMSO) at nanomolar concentrations. These dianions are pinned between zinc(II) centers with binding constants up to 145 000 000 M$^{–1}$. The presented investigation exemplifies a pathway to bridge the two design approaches and combine their strength in one structural motif as an efficient anion receptor.
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700 1 _ |a Kalarikkal, Malavika G.
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700 1 _ |a Holstein, Julian
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773 _ _ |a 10.1021/jacs.2c08579
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