Single-Molecule Force Spectroscopy Quantification of Adhesive Forces in Cucurbit[8]Uril Host–Guest Ternary Complexes
| Autor: | Jesus Barrio, Emma-Rose Janeček, Paul Williams, Xi Zhang, Oren A. Scherman, Yang Lan, Zarah Walsh-Korb, Ying Yu |
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| Přispěvatelé: | Lan, Yang [0000-0002-6231-9717], Scherman, Oren [0000-0001-8032-7166], Apollo - University of Cambridge Repository |
| Rok vydání: | 2017 |
| Předmět: |
0306 Physical Chemistry (incl. Structural)
Chemistry Stereochemistry Force spectroscopy 0303 Macromolecular and Materials Chemistry 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Reversible adhesion 0104 chemical sciences Molecular level Chemical physics Electrochemistry Molecule General Materials Science Adhesive 0210 nano-technology Ternary operation Ternary complex Spectroscopy |
| Zdroj: | Langmuir. 33:1343-1350 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/acs.langmuir.6b03457 |
| Popis: | Cucurbit[8]uril (CB[8]) heteroternary complexes display certain characteristics making them well-suited for molecular level adhesives. In particular, the ability to control adhesion through careful choice of host-guest binding pairs enables specific, fully reversible adhesion. Understanding the effect of the environment on the adhesive system is also critical when developing new molecular level adhesives. Here we explore the binding forces involved in the methyl viologen · CB[8] · napthol 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. This work was supported in part by the Engineering and Physical Sciences Research Council (EPSRC), the Walters-Kundert Charitable Trust and an ERC Starting Investigator grant (ASPiRe, 240629). ZWK, ERJ, YL thank the Royal Society of Chemistry for a grant allowing travel to Tsinghua University to carry out this research. YY would like to acknowledge financial support from the Young Scientists of the National Science Foundation of China (21304052). YL thanks the Chinese Overseas Scholarship Trust for financial support. JdB thanks the Marie Curie Actions program for financial support. PEW thanks the Atomic Weapons and Energy Commission and the Melville Laboratory for Polymer Synthesis for financial support. |
| Databáze: | OpenAIRE |
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