Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/93141
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Delgado-Pinar, Estefanía | - |
dc.contributor.author | Pineiro, Marta | - |
dc.contributor.author | Melo, J. Sérgio Seixas de | - |
dc.date.accessioned | 2021-02-16T16:23:23Z | - |
dc.date.available | 2021-02-16T16:23:23Z | - |
dc.date.issued | 2020-09-15 | - |
dc.identifier.issn | 1477-9234 | pt |
dc.identifier.issn | 1477-9226 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/93141 | - |
dc.description.abstract | A 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.iso | eng | pt |
dc.publisher | Royal Society of Chemistry | pt |
dc.relation | 02/SAICT/2017 | pt |
dc.relation | TDC/QUI-QFI/31625/2017 | pt |
dc.relation | SAICTPAC/0046/2015 | pt |
dc.relation | info:eu-repo/grantAgreement/CENTRO-01-0145-FEDER-000014/PT | pt |
dc.rights | embargoedAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by-nd/4.0/ | pt |
dc.title | A water-soluble bithiophene with increased photoluminescence efficiency and metal recognition ability | pt |
dc.type | article | - |
degois.publication.firstPage | 12319 | pt |
degois.publication.lastPage | 12326 | pt |
degois.publication.issue | 35 | pt |
degois.publication.title | Dalton Transactions | pt |
dc.relation.publisherversion | https://pubs.rsc.org/en/content/articlelanding/2020/DT/D0DT01385D | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1039/d0dt01385d | pt |
degois.publication.volume | 49 | pt |
dc.date.embargo | 2021-09-15 | * |
uc.date.periodoEmbargo | 365 | pt |
item.fulltext | Com Texto completo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-7400-5715 | - |
crisitem.author.orcid | 0000-0002-7460-3758 | - |
crisitem.author.orcid | 0000-0001-9708-5079 | - |
Appears in Collections: | I&D CQC - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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A water-soluble bithiophene with increased.pdf | 1.72 MB | Adobe PDF | View/Open |
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