Covalent cucurbit[7]uril-dye conjugates for sensing in aqueous saline media and biofluids.

Covalent cucurbit[7]uril-dye conjugates for sensing in aqueous saline media and biofluids.
复制标题

DOI:
10.1039/d0sc03079a
复制
发表时间:
2020-09-22
期刊:
影响因子:
8.4
通讯作者:
Biedermann F
Biedermann F
中科院分区:
化学1区
文献类型:
--
作者:
Hu C;Grimm L;Prabodh A;Baksi A;Siennicka A;Levkin PA;Kappes MM;Biedermann F

文献摘要

参考文献

被引文献

相似文献

葫芦[n]脲(CBn)的非共价化学传感整体已广泛用于概念验证传感应用,但它们很容易在盐水介质中分解,例如在盐水介质中。生物体液。我们在这里展示了共价葫芦[7]尿素指示剂染料缀合物是缓冲液(10×PBS缓冲液)和盐水稳定的(高达1.4 M NaCl),并且允许选择性传感人尿液和唾液中的帕金森病药物金刚烷胺,而类似的非共价CB7⊃染料复合物是功能失调的。对气相中的共价主体-染料缀合物以及去离子与盐水介质的深入分析揭示了有趣的结构、热力学和动力学效应,这些效应对于基于CBn的超分子化学传感器和系统的设计具有普遍意义。这项工作还介绍了一种新型的 CB7 高亲和力指示剂染料,通过该染料暴露了指示剂置换测定 (IDA) 的基本局限性,即不切实际的缓慢平衡时间。与非共价 CBn⊃ 染料报告对不同,共轭化学传感器还可以通过 SN2 型客体染料交换机制进行操作,从而缩短测定时间并为定制分析物选择性开辟新途径。与双分子报告对相比,单分子化学传感器在生物流体中表现出卓越的稳定性和检测能力。
Non-covalent chemosensing ensembles of cucurbit[n]urils (CBn) have been widely used in proof-of-concept sensing applications, but they are prone to disintegrate in saline media, e.g. biological fluids. We show here that covalent cucurbit[7]uril–indicator dye conjugates are buffer- (10× PBS buffer) and saline-stable (up to 1.4 M NaCl) and allow for selective sensing of Parkinson's drug amantadine in human urine and saliva, where the analogous non-covalent CB7⊃dye complex is dysfunctional. The in-depth analysis of the covalent host–dye conjugates in the gas-phase, and deionized versus saline aqueous media revealed interesting structural, thermodynamic and kinetic effects that are of general interest for the design of CBn-based supramolecular chemosensors and systems. This work also introduces a novel high-affinity indicator dye for CB7 through which fundamental limitations of indicator displacement assays (IDA) were exposed, namely an impractical slow equilibration time. Unlike non-covalent CBn⊃dye reporter pairs, the conjugate chemosensors can also operate through a SN2-type guest–dye exchange mechanism, which shortens assay times and opens new avenues for tailoring analyte-selectivity. Unimolecular chemosensor shows superior stability and detection capabilities in biofluids compared to bimolecular reporter pairs.
DOI: 10.1002/chem.201103364
发表时间: 2012-03-01
影响因子: 4.3
作者:
Dsouza, Roy N.;Hennig, Andreas;Nau, Werner M.
通讯作者: Nau, Werner M.
DOI: 10.1039/c9cc00762h
发表时间: 2019-03-14
影响因子: 4.9
作者:
Bai, Lin-Ming;Zhou, Hang;Jiang, Wei
通讯作者: Jiang, Wei
DOI: 10.1021/jacs.6b11140
发表时间: 2016-12-21
影响因子: 15
作者:
Bockus, Andrew T.;Smith, Lauren C.;Urbach, Adam R.
通讯作者: Urbach, Adam R.
DOI: 10.1177/070674378603100814
发表时间: 1986-11-01
影响因子: 4
作者:
COOK, PE;DERMER, SW;MCGURK, T
通讯作者: MCGURK, T
DOI: 10.1021/jacs.5b04553
发表时间: 2015-08-19
影响因子: 15
作者:
Ayhan, Mehmet M.;Karoui, Hakim;Ouari, Olivier
通讯作者: Ouari, Olivier