Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors
Anionic species are one of the most common pollutants in residual and freshwaters. The presence of anthropogenic anions in water drastically increases the toxicity to living beings. Here, we report the preparation of a new optical active material based on tri(tosylamino)phthalocyanines grafted to fe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/5/1632 |
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| author | João M. M. Rodrigues Andreia S. F. Farinha Zhi Lin José A. S. Cavaleiro Augusto C. Tome Joao P. C. Tome |
| author_facet | João M. M. Rodrigues Andreia S. F. Farinha Zhi Lin José A. S. Cavaleiro Augusto C. Tome Joao P. C. Tome |
| author_sort | João M. M. Rodrigues |
| collection | DOAJ |
| description | Anionic species are one of the most common pollutants in residual and freshwaters. The presence of anthropogenic anions in water drastically increases the toxicity to living beings. Here, we report the preparation of a new optical active material based on tri(tosylamino)phthalocyanines grafted to ferromagnetic silica nanoparticles for anion detection and removal. The new unsymmetrical phthalocyanines (Pcs) proved to be excellent chemosensors for several anions (AcO−, Br−, Cl−, CN−, F−, H<sub>2</sub>PO<sub>4</sub>−, HSO<sub>4</sub>−, NO<sub>2</sub>−, NO<sub>3</sub>−, and OH−) in dimethyl sulfoxide (DMSO). Furthermore, the Pcs were grafted onto magnetic nanoparticles. The resulting novel hybrid material showed selectivity and sensitivity towards CN−, F−, and OH− anions in DMSO with limit of detection (LoD) of ≈4.0 µM. In water, the new hybrid chemosensor demonstrated selectivity and sensitivity for CN− and OH− anions with LoD of ≈0.2 µM. The new hybrids are easily recovered using a magnet, allowing recyclability and reusability, after acidic treatment, without losing the sensing proprieties. |
| first_indexed | 2024-03-09T00:31:21Z |
| format | Article |
| id | doaj.art-496b0c610dd245668d966aba6ab9170e |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T00:31:21Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-496b0c610dd245668d966aba6ab9170e2023-12-11T18:31:06ZengMDPI AGSensors1424-82202021-02-01215163210.3390/s21051632Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion ChemosensorsJoão M. M. Rodrigues0Andreia S. F. Farinha1Zhi Lin2José A. S. Cavaleiro3Augusto C. Tome4Joao P. C. Tome5LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalWater Desalination and Reuse Center (WDRC), Division of Biological and Environmental Sciences (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi ArabiaCICECO and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalLAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalLAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalCQE, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, PortugalAnionic species are one of the most common pollutants in residual and freshwaters. The presence of anthropogenic anions in water drastically increases the toxicity to living beings. Here, we report the preparation of a new optical active material based on tri(tosylamino)phthalocyanines grafted to ferromagnetic silica nanoparticles for anion detection and removal. The new unsymmetrical phthalocyanines (Pcs) proved to be excellent chemosensors for several anions (AcO−, Br−, Cl−, CN−, F−, H<sub>2</sub>PO<sub>4</sub>−, HSO<sub>4</sub>−, NO<sub>2</sub>−, NO<sub>3</sub>−, and OH−) in dimethyl sulfoxide (DMSO). Furthermore, the Pcs were grafted onto magnetic nanoparticles. The resulting novel hybrid material showed selectivity and sensitivity towards CN−, F−, and OH− anions in DMSO with limit of detection (LoD) of ≈4.0 µM. In water, the new hybrid chemosensor demonstrated selectivity and sensitivity for CN− and OH− anions with LoD of ≈0.2 µM. The new hybrids are easily recovered using a magnet, allowing recyclability and reusability, after acidic treatment, without losing the sensing proprieties.https://www.mdpi.com/1424-8220/21/5/1632anionsanion bindingchemosensormagnetic nanoparticlesphthalocyanines |
| spellingShingle | João M. M. Rodrigues Andreia S. F. Farinha Zhi Lin José A. S. Cavaleiro Augusto C. Tome Joao P. C. Tome Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors Sensors anions anion binding chemosensor magnetic nanoparticles phthalocyanines |
| title | Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors |
| title_full | Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors |
| title_fullStr | Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors |
| title_full_unstemmed | Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors |
| title_short | Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors |
| title_sort | phthalocyanine functionalized magnetic silica nanoparticles as anion chemosensors |
| topic | anions anion binding chemosensor magnetic nanoparticles phthalocyanines |
| url | https://www.mdpi.com/1424-8220/21/5/1632 |
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