Repository logo
 
Publication

Differences in cucurbit[7]uril: surfactant complexation promoted by the cationic head group

2013Journal article Restricted access
Simple item page
dc.contributor.authorPessêgo, Márcia
dc.contributor.authorSilva, José P. da
dc.contributor.authorMoreira, José
dc.contributor.authorGarcía-Río, Luís
dc.date.accessioned2013-12-09T16:38:26Z
dc.date.available2013-12-09T16:38:26Z
dc.date.issued2013
dc.date.updated2013-12-04T09:32:07Z
dc.description.abstractThe formation of host/guest complexes between cucurbit[7]uril (CB7) and tetradecyltrialkylammonium bromide surfactants with trimethyl (C14TMA+), triethyl (C14TEA+), and tripropyl (C14TPA+) head groups was studied. Complexation was studied by ESI-MS, isothermal titration calorimetry (ITC), and NMR spectroscopy. The structure of the complexes is strongly dependent on the surfactant head group. Both 1:1 and 2:1 complexes are formed with all cationic surfactants. The magnitude of the K1:1 binding constants decreases with the alkyl length of the head group, whereas that of the K2:1 binding constants is independent of the nature of the surfactant head group. Distinct structures were found for the 1:1 and 2:1 complexes. C14TMA+ and C14TPA+ surfactants form 1:1 inclusion complexes that comprise the head group close to the CB7 portal and 2:1 external complexes with both host molecules near the head group. The 1:1 complexes between C14TEA+ and CB7 showed that the head group was centered inside the CB7 cavity, whereas in the 2:1 complex the second molecule of CB7 was located at the end of the main alkyl chain.por
dc.identifier.citationPessêgo, Márcia; Da Silva, José P.; Moreira, José A.; García-Río, Luis. Differences in Cucurbit[7]uril: Surfactant Complexation Promoted by the Cationic Head Group, ChemPlusChem, 78, 9, 1058-1064, 2013.por
dc.identifier.doihttp://dx.doi.org/10.1002/cplu.201300164
dc.identifier.issn21926506
dc.identifier.otherAUT: JMO01545;
dc.identifier.urihttp://hdl.handle.net/10400.1/3231
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherWiley-VCHpor
dc.titleDifferences in cucurbit[7]uril: surfactant complexation promoted by the cationic head grouppor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1064por
oaire.citation.issue9por
oaire.citation.startPage1058por
oaire.citation.titleChemPlusChempor
oaire.citation.volume78por
person.familyNameSilva
person.familyNameMoreira
person.givenNameJosé Paulo da
person.givenNameJosé
person.identifier.ciencia-id3413-C4F4-73F7
person.identifier.ciencia-idDC11-4E1F-F13F
person.identifier.orcid0000-0002-6458-7328
person.identifier.orcid0000-0001-8481-3436
person.identifier.ridA-4606-2008
person.identifier.ridF-3807-2010
person.identifier.scopus-author-id7201733236
person.identifier.scopus-author-id7201506886
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicatione2004fa2-a47d-44b0-b11c-fc95fe51cbf9
relation.isAuthorOfPublication644799ac-df06-4840-9f12-52c5b3ff0a76
relation.isAuthorOfPublication.latestForDiscovery644799ac-df06-4840-9f12-52c5b3ff0a76

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
ChemPlusChem 2013 Pessêgo.pdf
Size:
1.55 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

FCT2-Artigos (em revistas ou actas indexadas)