Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/49071
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Esteves, Cátia Isabel Canavezes | por |
dc.contributor.author | Batista, Rosa Maria Ferreira | por |
dc.contributor.author | Raposo, M. Manuela M. | por |
dc.contributor.author | Costa, Susana P. G. | por |
dc.date.accessioned | 2018-01-08T11:57:50Z | - |
dc.date.available | 2018-01-08T11:57:50Z | - |
dc.date.issued | 2016-04 | - |
dc.identifier.citation | Dyes and Pigments, 2016, 135, 134-142 | por |
dc.identifier.issn | 0143-7208 | por |
dc.identifier.uri | https://hdl.handle.net/1822/49071 | - |
dc.description.abstract | Novel phenylalanine derivatives bearing benzimidazole and crown ethers as coordinating/reporting units and thiophene as a spacer unit were synthesized for the first time, and their evaluation as fluorimetric chemosensors was carried out in acetonitrile and acetonitrile/water solutions. 15-Crown-5 benzimidazolyl phenylalanine methyl ester, 15-crown-5 thienylbenzimidazolyl phenylalanine methyl ester and 18-crown-6 thienylbenzimidazolyl phenylalanine methyl ester were tested for alkaline, alkaline-earth and transition metal ions (such as Na+, Ca2+, Cd2+, Co2+, Cr3+, Cu2+, Fe2+, Fe3+, Hg2+, Ni2+, Pd2+ and Zn2+). The different crown ether binding moieties as well as the electronic nature and the length of the π-bridge linked to the benzimidazole heterocycle allowed the fine tuning of the sensory properties as seen by spectrofluorimetric titrations. Therefore, 15-crown-5 benzimidazolyl phenylalanine methyl ester is a fluorimetric chemosensor, being selective and sensitive for Cu2+ and Pd2+ in aqueous solutions (ACN/H2O; 80:20). On the other hand, the metal cation sensing properties displayed by 15-crown-5 thienylbenzimidazolyl phenylalanine methyl ester bearing an arylthienyl spacer showed that this is a promising candidate as fluorimetric chemosensor for Fe3+, Pb2+ and Pd2+ in acetonitrile solution. | por |
dc.description.sponsorship | Thanks are due to Fundação para a Ciência e Tecnologia (Portugal) for financial support to the Portuguese NMR network (PTNMR, Bruker Avance III 400-Univ. Minho), FCT and FEDER (European Fund for Regional Development)-COMPETEQREN-EU for financial support to the research centre CQ/UM [PEst-C/QUI/UI0686/2013 (FCOMP-01-0124-FEDER-037302], a PhD grant to C.I.C. Esteves (SFRH/BD/68360/2010) and a post-doctoral grant to R.M.F. Batista (SFRH/BPD/79333/2011). | 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%2FBPD%2F79333%2F2011/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132953/PT | por |
dc.rights | openAccess | por |
dc.subject | Phenylalanine | por |
dc.subject | Imidazo-benzocrown ether | por |
dc.subject | Thiophene | por |
dc.subject | Fluorescence | por |
dc.subject | Metal ion detection | por |
dc.subject | Aqueous solution | por |
dc.title | Novel functionalised imidazo-benzocrown ethers bearing a thiophene spacer as fluorimetric chemosensors for metal ion detection | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://doi.org/10.1016/j.dyepig.2016.04.037 | por |
oaire.citationStartPage | 134 | por |
oaire.citationEndPage | 142 | por |
oaire.citationVolume | 135 | por |
dc.identifier.eissn | 1873-3743 | por |
dc.identifier.doi | 10.1016/j.dyepig.2016.04.037 | 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) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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artigo Esteves DYPI 2 2016.pdf | 1,66 MB | Adobe PDF | Ver/Abrir |