File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Viologen Tweezers to Probe the Force of Individual Donor-Acceptor π-Interactions

TitleViologen Tweezers to Probe the Force of Individual Donor-Acceptor π-Interactions
Authors
Issue Date2020
Citation
Journal of the American Chemical Society, 2020, v. 142, n. 50, p. 21153-21159 How to Cite?
AbstractDonor-acceptor (DA) π-interactions are weak attractive forces that are exploited widely in molecular and supramolecular chemistry. They have been characterized extensively by ensemble techniques, providing values for their energies that are useful for the design of soft materials. For implementation of motions or operations based on these DA π-interactions in wholly synthetic molecular machines, the mechanical strength and force associated with their out-of-equilibrium performance are the key parameters, in addition to their energies obtained at thermodynamic equilibrium. In this context, we have used single-molecule force spectroscopy as a nonequilibrium technique to determine the mechanical strength of individual DA π-interactions in solution. We designed and synthesized a molecular tweezer that is able to encapsulate π-donors and also demonstrated a precise opening extension. The mechanical breaking of the noncovalent interactions between viologen units - π-acceptors commonly employed in mechanically interlocked molecules - and several π-donors afforded a characteristic force-distance signature, revealing the opening of individual viologen tweezers with an unambiguous extension. Single-tweezer host-exchange experiments performed in situ demonstrated the sensitivity of the technique. This simple design could be exploited in quantifying the force of a large range of weak noncovalent bonding interactions as well as the potential work that molecular machines can generate at the single-molecule level.
Persistent Identifierhttp://hdl.handle.net/10722/333485
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSluysmans, Damien-
dc.contributor.authorZhang, Long-
dc.contributor.authorLi, Xuesong-
dc.contributor.authorGarci, Amine-
dc.contributor.authorStoddart, J. Fraser-
dc.contributor.authorDuwez, Anne Sophie-
dc.date.accessioned2023-10-06T05:19:44Z-
dc.date.available2023-10-06T05:19:44Z-
dc.date.issued2020-
dc.identifier.citationJournal of the American Chemical Society, 2020, v. 142, n. 50, p. 21153-21159-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/333485-
dc.description.abstractDonor-acceptor (DA) π-interactions are weak attractive forces that are exploited widely in molecular and supramolecular chemistry. They have been characterized extensively by ensemble techniques, providing values for their energies that are useful for the design of soft materials. For implementation of motions or operations based on these DA π-interactions in wholly synthetic molecular machines, the mechanical strength and force associated with their out-of-equilibrium performance are the key parameters, in addition to their energies obtained at thermodynamic equilibrium. In this context, we have used single-molecule force spectroscopy as a nonequilibrium technique to determine the mechanical strength of individual DA π-interactions in solution. We designed and synthesized a molecular tweezer that is able to encapsulate π-donors and also demonstrated a precise opening extension. The mechanical breaking of the noncovalent interactions between viologen units - π-acceptors commonly employed in mechanically interlocked molecules - and several π-donors afforded a characteristic force-distance signature, revealing the opening of individual viologen tweezers with an unambiguous extension. Single-tweezer host-exchange experiments performed in situ demonstrated the sensitivity of the technique. This simple design could be exploited in quantifying the force of a large range of weak noncovalent bonding interactions as well as the potential work that molecular machines can generate at the single-molecule level.-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titleViologen Tweezers to Probe the Force of Individual Donor-Acceptor π-Interactions-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jacs.0c10339-
dc.identifier.pmid33226790-
dc.identifier.scopuseid_2-s2.0-85097868448-
dc.identifier.volume142-
dc.identifier.issue50-
dc.identifier.spage21153-
dc.identifier.epage21159-
dc.identifier.eissn1520-5126-
dc.identifier.isiWOS:000600204900029-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats