Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/57334
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Esteves, Cátia Isabel Canavezes | por |
dc.contributor.author | Ferreira, Rosa Cristina Moutinho | por |
dc.contributor.author | Raposo, M. Manuela M. | por |
dc.contributor.author | Costa, Susana P. G. | por |
dc.date.accessioned | 2018-12-17T09:36:17Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | C. I. C. Esteves, R. C. M. Ferreira, M. M. M. Raposo, S. P. G. Costa, “New fluoroionophores for metal cations based on benzo[d]oxazol-5-yl-alanine bearing pyrrole and imidazole”, Dyes and Pigments, 2018, 151, 211–218. | por |
dc.identifier.issn | 0143-7208 | por |
dc.identifier.uri | https://hdl.handle.net/1822/57334 | - |
dc.description.abstract | Highly emissive heterocyclic alanines bearing a benzo[d]oxazolyl unit functionalised with pyrrole and imidazole at the side chain were synthesised and evaluated as fluorimetric chemosensors for different anions and metal cations. The results obtained by UV-Vis and fluorescence titrations as well as 1H NMR titrations indicate that there is a strong interaction through the donor N and O atoms at the side chain of the benzoxazolyl-alanines, with high selectivity towards Cu2+ and Pd2+ in a ligand-to-metal complex with 1:2 stoichiometry, and association constants were calculated for some ions. The photophysical and ion sensing properties of these unnatural amino acids suggest that they can be used to obtain bioinspired frameworks for metal ion recognition such as peptides/proteins with chemosensory/probing ability. | por |
dc.description.sponsorship | Thanks are due to Fundação para a Ciência e Tecnologia (FCT-Portugal) and FEDER-COMPETE for financial support through the CQ/UM (Ref. UID/QUI/00686/2013 and UID/QUI/0686/2016) and a PhD grant to C.I.C. Esteves (SFRH/BD/68360/2010) and R.C.M. Ferreira (SFRH/BD/86408/2012). 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. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F68360%2F2010/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F86408%2F2012/PT | por |
dc.relation | UID/QUI/0686/2013 | por |
dc.relation | UID/QUI/0686/2016 | por |
dc.rights | restrictedAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Benzoxazole | por |
dc.subject | Pyrrole | por |
dc.subject | Imidazole | por |
dc.subject | amino acids | por |
dc.subject | chemosensors | por |
dc.subject | Unnatural amino acids | por |
dc.subject | Fluorescent chemosensors | por |
dc.title | New fluoroionophores for metal cations based on benzo[d]oxazol-5-yl-alanine bearing pyrrole and imidazole | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/abs/pii/S0143720817319940 | por |
oaire.citationStartPage | 211 | por |
oaire.citationEndPage | 218 | por |
oaire.citationVolume | 151 | por |
dc.identifier.doi | 10.1016/j.dyepig.2017.12.040 | por |
dc.subject.fos | Ciências Naturais::Ciências Químicas | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Dyes and Pigments | por |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
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manuscript.pdf Acesso restrito! | 1,49 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons