Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/197928
Title: | Chalcone-based fluorescent chemosensors as new tools for detecting Cu2+ ions |
Author: | Gomes, Liliana J. Moreira, Tiago Rodríguez Raurell, Laura Moro, Artur J. |
Keywords: | Enginyeria química Detectors químics Coure Chemical engineering Chemical detectors Copper |
Issue Date: | 2022 |
Publisher: | Elsevier B.V. |
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. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.dyepig.2021.109845 |
It is part of: | Dyes and Pigments, 2022 |
URI: | http://hdl.handle.net/2445/197928 |
Related resource: | https://doi.org/10.1016/j.dyepig.2021.109845 |
ISSN: | 0143-7208 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB)) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
731236.pdf | 1.27 MB | Adobe PDF | View/Open Request a copy |
Document embargat fins el
31-12-2024
This item is licensed under a
Creative Commons License