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Host-guest complexes of cucurbit[8]uril and [(η5-C5H4R)Mo(CO)3CH3] (R = H, CO2CH3) for controlled release of carbon monoxide

2024-10Journal article Open access
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dc.contributor.authorGomes, Ana C.
dc.contributor.authorMonteiro, Rodrigo P.
dc.contributor.authorCalhau, Isabel B.
dc.contributor.authorD. Lopes, André
dc.contributor.authorGonçalves, Isabel S.
dc.contributor.authorPillinger, Martyn
dc.date.accessioned2024-11-02T10:59:41Z
dc.date.available2024-11-02T10:59:41Z
dc.date.issued2024-10
dc.description.abstractThe monosubstituted cyclopentadienyl half-sandwich molybdenum(II) tricarbonyl complex [(eta 5-C5H4CO2CH3) Mo(CO)3CH3] (1) and its 1:1 inclusion compound with cucurbit[8]uril (1@CB8) have been prepared and characterised by elemental and thermogravimetric analyses, powder X-ray diffraction, diffuse reflectance UV-vis, solid-state 13C{1H} MAS NMR, FT-IR, and Raman spectroscopies. The CO-releasing behaviours of 1, 1@CB8 and, for comparison, [(eta 5-C5H5)Mo(CO)3CH3] (2) and its 1:1 inclusion complex with CB8, were assessed using a deoxymyoglobin-carbonmonoxymyglobin assay. For assays performed in the dark at 37 degrees C, complex 1 undergoes thermally assisted spontaneous CO release, with ca. 0.5 equivalents of CO being released after 6 h. The half-life (t1/2) of 325 min identifies 1 as a slow releaser when compared to complex 2 bearing the unsubstituted cyclopentadienyl ligand (t1/2 = 25 min). CO release from 1 was promoted by exposure to UV light (t1/2 = 85 min), establishing the complex as a photochemically activated CO-releasing molecule (photoCORM). For 1@CB8, t1/2 for photo-assisted CO release increased to ca. 7 h, and for 2@CB8 the dark-release t1/2 increased to 165 min, showing that molecular acceptors like cucurbiturils can be used effectively as second-sphere ligands to modulate the CO release profile of CORMs.eng
dc.description.sponsorshipCEECIND/02128/2017 ; 022161
dc.identifier.doi10.1016/j.jorganchem.2024.123312
dc.identifier.issn0022-328X
dc.identifier.urihttp://hdl.handle.net/10400.1/26194
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationCICECO-Aveiro Institute of Materials
dc.relationCICECO-Aveiro Institute of Materials
dc.relationCICECO – Aveiro Institute of Materials
dc.relation.ispartofJournal of Organometallic Chemistry
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCO-releasing molecules
dc.subjectMolybdenum
dc.subjectEncapsulation
dc.subjectCucurbituril
dc.subjectMyoglobin assay
dc.titleHost-guest complexes of cucurbit[8]uril and [(η5-C5H4R)Mo(CO)3CH3] (R = H, CO2CH3) for controlled release of carbon monoxideeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCICECO-Aveiro Institute of Materials
oaire.awardTitleCICECO-Aveiro Institute of Materials
oaire.awardTitleCICECO – Aveiro Institute of Materials
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50011%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50011%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0006%2F2020/PT
oaire.citation.startPage123312
oaire.citation.titleJournal of Organometallic Chemistry
oaire.citation.volume1019
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameD. Lopes
person.givenNameAndré
person.identifier2824636
person.identifier.ciencia-id351E-856A-0300
person.identifier.orcid0000-0002-9702-1216
person.identifier.ridE-2136-2012
person.identifier.scopus-author-id7201958625
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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