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"Click" Cucurbit[7]uril Hosts on Self-Assembled Monolayers: Quantitative Supramolecular Complexation with Ferrocene Guests
Chen, Kennedy S.1; Qi, Lin1; Chen, Jia2; Wang, Ruibing2; Yu, Hua Zhong1
2022-01-27
Source PublicationJournal of Physical Chemistry C
ISSN1932-7447
Volume126Issue:3Pages:1661-1671
Abstract

The ultrahigh stability of the ferrocene@cucurbit[7]uril (Fc@CB[7]) host-guest inclusion complex enables its promising application as a novel immobilization/conjugation motif for constructing biosensors and molecular devices. However, its supramolecular complexation on surface has been rarely studied, which is partially due to the limited success of current CB[7] immobilization strategies (suffering from either poor stability or inconvenient and time-consuming procedures). In this work, we have successfully tethered alkyne-functionalized CB[7] (-O-CB[7]) on azide-terminated self-assembled monolayers (SAMs) on gold via the copper(I)-catalyzed azide-alkyne cycloaddition reaction with high efficiency. With this new approach, highly stable and uniform CB[7]-functionalized SAMs were obtained, which enabled us to gain insights into the recognition properties of CB[7] toward various Fc derivatives on the surface. In particular, the derived complexation thermodynamic (e.g., for FcMeOH, Kf = (1.6 ± 0.3) × 107 M-1) and kinetic (ka = (2.6 ± 0.4) × 103 M-1 s-1, kd = (5.1 ± 0.3) × 10-5 s-1) data indicate the strong interfacial host-guest binding of surface-bound CB[7] toward both cationic and neutral ferrocene derivatives. Remarkably, a comparable binding stability was observed for the anionic ferrocene derivative with an increased distance between the ferrocene core and negatively charged substituent, which is significant for immobilizing/conjugating negatively charged biological macromolecules (e.g., DNA probes).

DOI10.1021/acs.jpcc.1c09781
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000745244200001
Scopus ID2-s2.0-85123943409
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Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF PHARMACEUTICAL SCIENCES
Institute of Chinese Medical Sciences
THE STATE KEY LABORATORY OF QUALITY RESEARCH IN CHINESE MEDICINE (UNIVERSITY OF MACAU)
Corresponding AuthorWang, Ruibing; Yu, Hua Zhong
Affiliation1.Department of Chemistry, Simon Fraser University, Burnaby, V5A 1S6, Canada
2.State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, 999078, Macao
Corresponding Author AffilicationInstitute of Chinese Medical Sciences
Recommended Citation
GB/T 7714
Chen, Kennedy S.,Qi, Lin,Chen, Jia,et al. "Click" Cucurbit[7]uril Hosts on Self-Assembled Monolayers: Quantitative Supramolecular Complexation with Ferrocene Guests[J]. Journal of Physical Chemistry C, 2022, 126(3), 1661-1671.
APA Chen, Kennedy S.., Qi, Lin., Chen, Jia., Wang, Ruibing., & Yu, Hua Zhong (2022). "Click" Cucurbit[7]uril Hosts on Self-Assembled Monolayers: Quantitative Supramolecular Complexation with Ferrocene Guests. Journal of Physical Chemistry C, 126(3), 1661-1671.
MLA Chen, Kennedy S.,et al.""Click" Cucurbit[7]uril Hosts on Self-Assembled Monolayers: Quantitative Supramolecular Complexation with Ferrocene Guests".Journal of Physical Chemistry C 126.3(2022):1661-1671.
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