Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48423
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Ferreira, Rosa Cristina Moutinho | por |
dc.contributor.author | Costa, Susana P. G. | por |
dc.contributor.author | Gonçalves, Hugo Manuel Castro | por |
dc.contributor.author | Belsley, M. | por |
dc.contributor.author | Raposo, M. Manuela M. | por |
dc.date.accessioned | 2017-12-19T11:48:25Z | - |
dc.date.issued | 2017-11-07 | - |
dc.identifier.issn | 1144-0546 | por |
dc.identifier.uri | https://hdl.handle.net/1822/48423 | - |
dc.description.abstract | Three series of fluorescent phenanthroimidazoles bearing heterocyclic spacers were synthesized in moderate to excellent yields and evaluated as optical chemosensors for ions as well as two-photon absorbing chromophores. Interaction of compounds 5-7 with anions and cations in acetonitrile and acetonitrile/H2O (95 : 5) showed them to be selective receptors for several anions (AcO-, CN- and F-) and cations (Fe3+, Cu2+ and Pd2+), with compound 7a being the most sensitive receptor for Fe3+ and Cu2+. On the other hand, compounds 5a, 7b and 7c were the most sensitive receptors for AcO-, CN- and F-. The binding stoichiometry between the receptors and the anions and cations was found to be 1 : 2 (ligand to anion/metal cation). The binding process was also followed by H-1 NMR titrations. The evaluation of the TPA properties of chosen phenanthroimidazoles 7a-c by the two-photon induced fluorescence method revealed that compound 7c, which contains a bithienyl spacer, exhibited the highest TPA cross-section (sigma(2)) value. | por |
dc.description.sponsorship | Thanks are due to Fundação para a Ciência e Tecnologia (FCT) for a PhD grant to R. C. M. Ferreira (SFRH/BD/86408/2012), and FEDER (European Fund for Regional Development)-COMPETE-QREN-EU for financial support through the Chemistry Research Centre of the University of Minho (Ref. UID/QUI/00686/2013 and UID/QUI/0686/2016). The NMR spectrometer Bruker Avance III 400 is part of the National NMR Network and was purchased within the framework of the National Program for Scientific Re-equipment, contract REDE/1517/RMN/2005 with funds from POCI 2010 (FEDER) and FCT. The femto-second laser system was acquired within the framework of the grant REEQ/25/FIS/2005 from the Portuguese Foundation for Science and Technology (FCT). | por |
dc.language.iso | eng | por |
dc.publisher | Royal Society of Chemistry | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F86408%2F2012/PT | por |
dc.relation | UID/QUI/00686/2013 | por |
dc.relation | UID/QUI/0686/2016 | por |
dc.rights | restrictedAccess | por |
dc.title | Fluorescent phenanthroimidazoles functionalized with heterocyclic spacers: synthesis, optical chemosensory ability and two-photon absorption (TPA) properties | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
oaire.citationStartPage | 12866 | por |
oaire.citationEndPage | 12878 | por |
oaire.citationIssue | 21 | por |
oaire.citationVolume | 41 | por |
dc.date.updated | 2017-12-19T10:34:48Z | - |
dc.identifier.doi | 10.1039/c7nj02113e | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | - |
sdum.export.identifier | 1217 | - |
sdum.journal | New Journal of Chemistry | por |
Aparece nas coleções: | CDF - FAMO - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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New Journal of Chemistry, 2017, 41, 12866 - 12878.pdf Acesso restrito! | 3,77 MB | Adobe PDF | Ver/Abrir |