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Single-Molecule Force Spectroscopy Quantification of Adhesive Forces in Cucurbit[8]Uril-Host Guest Ternary Complexes

Walsh-Korb, Z; Yu, Y; Janecek, E-R; Lang, Y; del Barrio, J; Williams, PE; Zhang, X; (2017) Single-Molecule Force Spectroscopy Quantification of Adhesive Forces in Cucurbit[8]Uril-Host Guest Ternary Complexes. Langmuir , 33 (6) pp. 1343-1350. 10.1021/acs.langmuir.6b03457. Green open access

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Abstract

Cucurbit[8]uril (CB[8]) heteroternary complexes display certain characteristics making them well-suited for molecular level adhesives. In particular, careful choice of host–guest binding pairs enables specific, fully reversible adhesion. Understanding the effect of the environment is also critical when developing new molecular level adhesives. Here we explore the binding forces involved in the methyl viologen·CB[8]·naphthol heteroternary complex using single-molecule force spectroscopy (SMFS) under a variety of conditions. From SMFS, the interaction of a single ternary complex was found to be in the region of 140 pN. Additionally, a number of surface interactions could be readily differentiated using the SMFS technique allowing for a deeper understanding of the dynamic heteroternary CB[8] system on the single-molecule scale.

Type: Article
Title: Single-Molecule Force Spectroscopy Quantification of Adhesive Forces in Cucurbit[8]Uril-Host Guest Ternary Complexes
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/acs.langmuir.6b03457
Publisher version: https://doi.org/10.1021/acs.langmuir.6b03457
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Unbinding Forces, Immobilization, Binding, Copolymers, Mechanics, System
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10077382
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