New Cation Sensors Based on Eugenol-Derived Azo Dyes
Eugenol-based azo dyes illustrate how bio-sourced compounds like eugenol can be transformed through synthetic processes into functional and colorful compounds. The main purpose of the present work was to develop new responsive colorimetric sensors for metal cations based on eugenol-derived azo compo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/30/13/2788 |
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| author | José R. A. Coelho Ana Rita F. Pacheco Diogo C. Domingues Ana Rita O. Rodrigues Akani A. Temitope Paulo J. G. Coutinho Maria José G. Fernandes Elisabete M. S. Castanheira M. Sameiro T. Gonçalves |
| author_facet | José R. A. Coelho Ana Rita F. Pacheco Diogo C. Domingues Ana Rita O. Rodrigues Akani A. Temitope Paulo J. G. Coutinho Maria José G. Fernandes Elisabete M. S. Castanheira M. Sameiro T. Gonçalves |
| author_sort | José R. A. Coelho |
| collection | DOAJ |
| description | Eugenol-based azo dyes illustrate how bio-sourced compounds like eugenol can be transformed through synthetic processes into functional and colorful compounds. The main purpose of the present work was to develop new responsive colorimetric sensors for metal cations based on eugenol-derived azo compounds. The incorporation of the azo group into the eugenol framework allows for strong electronic interactions with metal cations, leading to distinct color changes observable to the naked eye. These azo-eugenol dyes exhibit shifts in their UV-Vis absorption spectra upon complexation with metal cations such as copper (Cu<sup>2+</sup>) and lead (Pb<sup>2+</sup>), making them effective sensors for environmental and analytical applications. The eugenol-based azo dyes were subjected to photophysical studies to understand selectivity, response time, and stability in relation to metal cations, which will be a starting point for the monitoring of toxic metal contaminants in aqueous environments. |
| format | Article |
| id | doaj-art-0b5c5f4dc497419c8ec95e5a10790733 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-0b5c5f4dc497419c8ec95e5a107907332025-08-20T03:28:33ZengMDPI AGMolecules1420-30492025-06-013013278810.3390/molecules30132788New Cation Sensors Based on Eugenol-Derived Azo DyesJosé R. A. Coelho0Ana Rita F. Pacheco1Diogo C. Domingues2Ana Rita O. Rodrigues3Akani A. Temitope4Paulo J. G. Coutinho5Maria José G. Fernandes6Elisabete M. S. Castanheira7M. Sameiro T. Gonçalves8Chemistry Centre of the University of Minho (CQ-UM), Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Centre of Minho and Porto Universities (CF-UM-UP), Department of Physics, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalChemistry Centre of the University of Minho (CQ-UM), Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Centre of Minho and Porto Universities (CF-UM-UP), Department of Physics, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalChemistry Centre of the University of Minho (CQ-UM), Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Centre of Minho and Porto Universities (CF-UM-UP), Department of Physics, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalChemistry Centre of the University of Minho (CQ-UM), Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalPhysics Centre of Minho and Porto Universities (CF-UM-UP), Department of Physics, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalChemistry Centre of the University of Minho (CQ-UM), Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, PortugalEugenol-based azo dyes illustrate how bio-sourced compounds like eugenol can be transformed through synthetic processes into functional and colorful compounds. The main purpose of the present work was to develop new responsive colorimetric sensors for metal cations based on eugenol-derived azo compounds. The incorporation of the azo group into the eugenol framework allows for strong electronic interactions with metal cations, leading to distinct color changes observable to the naked eye. These azo-eugenol dyes exhibit shifts in their UV-Vis absorption spectra upon complexation with metal cations such as copper (Cu<sup>2+</sup>) and lead (Pb<sup>2+</sup>), making them effective sensors for environmental and analytical applications. The eugenol-based azo dyes were subjected to photophysical studies to understand selectivity, response time, and stability in relation to metal cations, which will be a starting point for the monitoring of toxic metal contaminants in aqueous environments.https://www.mdpi.com/1420-3049/30/13/2788eugenolphenolic compoundsazo dyescation detectioncolorimetric sensors |
| spellingShingle | José R. A. Coelho Ana Rita F. Pacheco Diogo C. Domingues Ana Rita O. Rodrigues Akani A. Temitope Paulo J. G. Coutinho Maria José G. Fernandes Elisabete M. S. Castanheira M. Sameiro T. Gonçalves New Cation Sensors Based on Eugenol-Derived Azo Dyes Molecules eugenol phenolic compounds azo dyes cation detection colorimetric sensors |
| title | New Cation Sensors Based on Eugenol-Derived Azo Dyes |
| title_full | New Cation Sensors Based on Eugenol-Derived Azo Dyes |
| title_fullStr | New Cation Sensors Based on Eugenol-Derived Azo Dyes |
| title_full_unstemmed | New Cation Sensors Based on Eugenol-Derived Azo Dyes |
| title_short | New Cation Sensors Based on Eugenol-Derived Azo Dyes |
| title_sort | new cation sensors based on eugenol derived azo dyes |
| topic | eugenol phenolic compounds azo dyes cation detection colorimetric sensors |
| url | https://www.mdpi.com/1420-3049/30/13/2788 |
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