Chalcone-based fluorescent chemosensors as new tools for detecting Cu2+ ions
| dc.contributor.author | Gomes, Liliana J. | |
| dc.contributor.author | Moreira, Tiago | |
| dc.contributor.author | Rodríguez Raurell, Laura | |
| dc.contributor.author | Moro, Artur J. | |
| dc.date.accessioned | 2023-05-12T14:32:55Z | |
| dc.date.available | 2024-12-31T06:10:08Z | |
| dc.date.issued | 2022 | |
| dc.date.updated | 2023-05-12T14:32:55Z | |
| dc.description.abstract | The design and full characterization of new fluorescent chemosensors for Cu2+ is herein presented. The structure of the sensors is based on a chalcone backbone as the chromophoric unit, with di-(2-picolyl)amine (DPA) as a receptor moiety. Two systems, bearing one or two chalcone-DPA units, were synthesized and fully characterized. UV-Vis titrations with several metal ions were performed and both chemosensors exhibited a strong hypsochromic shift in the absorption spectra upon Cu2+ addition, indicating a higher selectivity for this metal over other divalent cations. Additionally, fluorescent spectra recorded in the same conditions revealed a stronger quenching effect in the presence of Cu2+, even in the presence of other metal cations, with association constants above 106 M−1 and detection limits below the micromolar level for both chemosensors. Paper test-strips with one of the chemosensors were prepared to attest its possible application for detecting copper in aqueous samples. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.idgrec | 731236 | |
| dc.identifier.issn | 0143-7208 | |
| dc.identifier.uri | https://hdl.handle.net/2445/197928 | |
| dc.language.iso | eng | |
| dc.publisher | Elsevier B.V. | |
| dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.dyepig.2021.109845 | |
| dc.relation.ispartof | Dyes and Pigments, 2022 | |
| dc.relation.uri | https://doi.org/10.1016/j.dyepig.2021.109845 | |
| dc.rights | cc-by-nc-nd (c) Elsevier B.V., 2022 | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.source | Articles publicats en revistes (Química Inorgànica i Orgànica) | |
| dc.subject.classification | Enginyeria química | |
| dc.subject.classification | Detectors químics | |
| dc.subject.classification | Coure | |
| dc.subject.other | Chemical engineering | |
| dc.subject.other | Chemical detectors | |
| dc.subject.other | Copper | |
| dc.title | Chalcone-based fluorescent chemosensors as new tools for detecting Cu2+ ions | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/acceptedVersion |
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