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Photoresponsive Binding Dynamics in High-Affinity Cucurbit[8]uril-Dithienylethene Host-Guest Complexes

2021-07-02Artigo científico Acesso aberto
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dc.contributor.authorColaço, Miriam
dc.contributor.authorMáximo, Patrícia
dc.contributor.authorJorge Parola, A.
dc.contributor.authorBasílio, Nuno
dc.contributor.institutionDQ - Departamento de Química
dc.contributor.institutionLAQV@REQUIMTE
dc.contributor.pblWiley
dc.date.accessioned2021-11-04T23:38:05Z
dc.date.available2022-07-03T00:31:04Z
dc.date.embargoedUntil2022-07-02
dc.date.issued2021-07-02
dc.descriptionThis work was supported by the Associate Laboratory for Green Chemistry-LAQV which is financed by national funds from FCT/MCTES (UIDB/50006/2020 and UIDP/50006/2020). FCT/MCTES is also acknowledged for supporting the National Portuguese NMR Network (ROTEIRO/0031/2013-PINFRA/22161/2016, cofinanced by FEDER through COMPETE 2020, POCI, PORL, and FCT through PIDDAC) and for the grants PTDC/QUI-COL/32351/2017, PTDC/QUI-QFI/30951/2017 and CEECIND/00466/2017.
dc.description.abstractThe use of external stimuli to control the binding kinetics in supramolecular systems is of critical importance for the development of advanced molecular machines and devices. In this work, a study focused on the kinetics of a water-soluble host-guest system based on cucurbit[8]uril and two dithienylethene (DTE) photoswitches is reported. It is shown that for the DTE guest comprising two anionic sulfonate side arms appended to pyridinium moieties, the formation/dissociation of the pseudorotaxane structures is slowed down by more than 100000-fold with respect to its bipyridinium analogue. The decrease in ingression rate leads to the emergence of a competitive metastable product with the open DTE isomer that has an important influence in the overall binding kinetics. Moreover, the host-guest dissociation kinetics is demonstrated to be approximately 100-fold slower for the closed DTE isomer (t1/2=107 h vs. t1/2=1.2 h for the open isomer) allowing control over the dissociation rate with light.en
dc.description.versionauthorsversion
dc.description.versionpublished
dc.format.extent667377
dc.identifier.doi10.1002/chem.202100974
dc.identifier.issn0947-6539
dc.identifier.otherPURE: 32211938
dc.identifier.otherPURE UUID: 02718177-88a6-416b-913f-309a49e4c5a7
dc.identifier.otherScopus: 85106758296
dc.identifier.otherPubMed: 33908661
dc.identifier.otherWOS: 000655865600001
dc.identifier.otherORCID: /0000-0002-1333-9076/work/101300503
dc.identifier.urihttp://hdl.handle.net/10362/127174
dc.identifier.urlhttps://www.scopus.com/pages/publications/85106758296
dc.language.isoeng
dc.peerreviewedyes
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/734834/EU
dc.relationEngineering optoelectronic INterfaces: a global action intersecting FUndamental conceptS and technology implementatION of self-organized organic materials
dc.subjectdiarylethenes
dc.subjectinclusion complexes
dc.subjectkinetics
dc.subjectphotochemistry
dc.subjectsupramolecular chemistry
dc.subjectCatalysis
dc.subjectOrganic Chemistry
dc.titlePhotoresponsive Binding Dynamics in High-Affinity Cucurbit[8]uril-Dithienylethene Host-Guest Complexesen
dc.typejournal article
degois.publication.firstPage9550
degois.publication.issue37
degois.publication.lastPage9555
degois.publication.titleChemistry - A European Journal
degois.publication.volume27
dspace.entity.typePublication
oaire.awardNumber734834
oaire.awardTitleEngineering optoelectronic INterfaces: a global action intersecting FUndamental conceptS and technology implementatION of self-organized organic materials
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/734834/EU
oaire.fundingStreamH2020
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccess
relation.isProjectOfPublication0f336bc5-e909-4a66-a7e3-27c3818b4af5
relation.isProjectOfPublication.latestForDiscovery0f336bc5-e909-4a66-a7e3-27c3818b4af5

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