Tuning the anion binding properties of lanthanide receptors to discriminate nucleoside phosphates in a sensing array.

Tuning the anion binding properties of lanthanide receptors to discriminate nucleoside phosphates in a sensing array.
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DOI:
10.1039/d0sc00343c
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发表时间:
2020-03-11
期刊:
影响因子:
8.4
通讯作者:
Butler SJ
Butler SJ
中科院分区:
化学1区
文献类型:
--
作者:
Hewitt SH;Macey G;Mailhot R;Elsegood MRJ;Duarte F;Kenwright AM;Butler SJ

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The development of synthetic receptors for the selective binding and discrimination of anions in water requires an understanding of how anions interact with these synthetic receptors. Molecules designed to differentiate nucleoside phosphate anions (e.g. ATP, ADP, GTP, GDP, UDP) under physiological conditions could underpin exciting new sensing tools for biomedical research and drug discovery, but it is very challenging due to the similarities in anion structure, size and charge. We present a series of lanthanide-based anion receptors and establish key structural elements that impact on nucleoside phosphate anion binding and sensing. Structural evidence of anion binding using X-ray crystallographic and NMR data, supported by DFT calculations indicate the binding modes between the lanthanide complexes and certain phosphoanions, revealing a bidentate (α-, γ-) binding mode to ATP. We further use four of the receptors to allow discrimination of eight nucleoside phosphate anions in the first array-based assay using lanthanide complexes, taking advantage of the multiple emission bands and long emission lifetimes associated with luminescent lanthanide complexes. Discrimination of nucleoside phosphate anions in the first supramolecular sensing array using luminescent lanthanide complexes.
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