{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T18:36:18Z","timestamp":1774463778152,"version":"3.50.1"},"reference-count":42,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,2,26]],"date-time":"2021-02-26T00:00:00Z","timestamp":1614297600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/50011\/2020"],"award-info":[{"award-number":["UIDB\/50011\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/50006\/2020"],"award-info":[{"award-number":["UIDB\/50006\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["FCT UID\/QUI\/00062\/2019"],"award-info":[{"award-number":["FCT UID\/QUI\/00062\/2019"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/00100\/2020"],"award-info":[{"award-number":["UIDB\/00100\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PTDC\/CTM\/101538\/2008, PTDC\/QEQ-QOR\/6160\/2014 and PTDC\/QUI-QOR\/30771\/2017"],"award-info":[{"award-number":["PTDC\/CTM\/101538\/2008, PTDC\/QEQ-QOR\/6160\/2014 and PTDC\/QUI-QOR\/30771\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/81014\/2011"],"award-info":[{"award-number":["SFRH\/BD\/81014\/2011"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>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\u2212, Br\u2212, Cl\u2212, CN\u2212, F\u2212, H2PO4\u2212, HSO4\u2212, NO2\u2212, NO3\u2212, and OH\u2212) in dimethyl sulfoxide (DMSO). Furthermore, the Pcs were grafted onto magnetic nanoparticles. The resulting novel hybrid material showed selectivity and sensitivity towards CN\u2212, F\u2212, and OH\u2212 anions in DMSO with limit of detection (LoD) of \u22484.0 \u00b5M. In water, the new hybrid chemosensor demonstrated selectivity and sensitivity for CN\u2212 and OH\u2212 anions with LoD of \u22480.2 \u00b5M. The new hybrids are easily recovered using a magnet, allowing recyclability and reusability, after acidic treatment, without losing the sensing proprieties.<\/jats:p>","DOI":"10.3390\/s21051632","type":"journal-article","created":{"date-parts":[[2021,2,26]],"date-time":"2021-02-26T04:36:24Z","timestamp":1614314184000},"page":"1632","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Phthalocyanine-Functionalized Magnetic Silica Nanoparticles as Anion Chemosensors"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4031-8000","authenticated-orcid":false,"given":"Jo\u00e3o M. M.","family":"Rodrigues","sequence":"first","affiliation":[{"name":"LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"given":"Andreia S. F.","family":"Farinha","sequence":"additional","affiliation":[{"name":"Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Sciences (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5984-7228","authenticated-orcid":false,"given":"Zhi","family":"Lin","sequence":"additional","affiliation":[{"name":"CICECO and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5495-5126","authenticated-orcid":false,"given":"Jos\u00e9 A. S.","family":"Cavaleiro","sequence":"additional","affiliation":[{"name":"LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4331-714X","authenticated-orcid":false,"given":"Augusto C.","family":"Tome","sequence":"additional","affiliation":[{"name":"LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"given":"Joao P. C.","family":"Tome","sequence":"additional","affiliation":[{"name":"CQE, Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1729","DOI":"10.1021\/am100227r","article-title":"Synthesis of magnetic molecularly imprinted poly(ethylene-co-vinyl alcohol) nanoparticles and their uses in the extraction and sensing of target molecules in urine","volume":"2","author":"Lee","year":"2010","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"4490","DOI":"10.1021\/ja100455c","article-title":"Magnetic glyco-nanoparticles: A tool to detect, differentiate, and unlock the glyco-codes ofcancer via magnetic resonance imaging","volume":"132","author":"Zhu","year":"2010","journal-title":"J. Am. Chem. 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