Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/93141
DC FieldValueLanguage
dc.contributor.authorDelgado-Pinar, Estefanía-
dc.contributor.authorPineiro, Marta-
dc.contributor.authorMelo, J. Sérgio Seixas de-
dc.date.accessioned2021-02-16T16:23:23Z-
dc.date.available2021-02-16T16:23:23Z-
dc.date.issued2020-09-15-
dc.identifier.issn1477-9234pt
dc.identifier.issn1477-9226pt
dc.identifier.urihttp://hdl.handle.net/10316/93141-
dc.description.abstractA new water-soluble tri-tert-butyl-bithiophenesulfonamide (α2-tbS) was synthesized and a comprehensive spectroscopic and photophysical study was undertaken in organic solvents and water at different pH values. In contrast to the behaviour found for the parent (and un-substituted) α,α'-bithiophene (α2), in which radiationless decay processes are the main excited-state deactivation channels, the tert-butylsulfonamide derivative presents a significant fluorescence quantum yield (φF) (ca. one order of magnitude higher than that of α2). The high φF allowed further exploring α2-tbS as a selective fluorimetric sensor for metal ions. A strong selectivity towards Cu(ii) is observed at neutral pH values, whereas at pH = 9.5 a strong quenching upon the addition of Hg(ii) is observed. An additional high sensitivity of 0.64 ± 0.02 ppm towards Cu(ii) was observed, well below 1.25 ppm (∼20 μM), the maximum value allowed in drinking water by the EPA.pt
dc.language.isoengpt
dc.publisherRoyal Society of Chemistrypt
dc.relation02/SAICT/2017pt
dc.relationTDC/QUI-QFI/31625/2017pt
dc.relationSAICTPAC/0046/2015pt
dc.relationinfo:eu-repo/grantAgreement/CENTRO-01-0145-FEDER-000014/PTpt
dc.rightsembargoedAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/pt
dc.titleA water-soluble bithiophene with increased photoluminescence efficiency and metal recognition abilitypt
dc.typearticle-
degois.publication.firstPage12319pt
degois.publication.lastPage12326pt
degois.publication.issue35pt
degois.publication.titleDalton Transactionspt
dc.relation.publisherversionhttps://pubs.rsc.org/en/content/articlelanding/2020/DT/D0DT01385Dpt
dc.peerreviewedyespt
dc.identifier.doi10.1039/d0dt01385dpt
degois.publication.volume49pt
dc.date.embargo2021-09-15*
uc.date.periodoEmbargo365pt
item.grantfulltextembargo_20210915-
item.languageiso639-1en-
item.fulltextCom Texto completo-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0002-7400-5715-
crisitem.author.orcid0000-0002-7460-3758-
crisitem.author.orcid0000-0001-9708-5079-
Appears in Collections:I&D CQC - Artigos em Revistas Internacionais
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