TY  - JOUR
AU  - Van Craen, David
AU  - Kalarikkal, Malavika G.
AU  - Holstein, Julian
TI  - A Charge-Neutral Self-Assembled L<sub>2</sub>Zn<sub>2</sub> Helicate as Bench-Stable Receptor for Anion Recognition at Nanomolar Concentration
JO  - Journal of the American Chemical Society
VL  - 144
IS  - 39
SN  - 0002-7863
CY  - Washington, DC
PB  - ACS Publications
M1  - PUBDB-2023-03743
SP  - 18135 - 18143
PY  - 2022
N1  - Waiting for fulltext
AB  - 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<sup>–1</sup>. 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. 
LB  - PUB:(DE-HGF)16
C6  - 36137546
UR  - <Go to ISI:>//WOS:000861632500001
DO  - DOI:10.1021/jacs.2c08579
UR  - https://bib-pubdb1.desy.de/record/586016
ER  -