{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T06:46:58Z","timestamp":1773384418488,"version":"3.50.1"},"reference-count":33,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,9,23]],"date-time":"2022-09-23T00:00:00Z","timestamp":1663891200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT)","award":["CQ\/UM (UID\/QUI\/00686\/2020)"],"award-info":[{"award-number":["CQ\/UM (UID\/QUI\/00686\/2020)"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT)","award":["SFRH\/BD\/145639\/2019"],"award-info":[{"award-number":["SFRH\/BD\/145639\/2019"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT)","award":["022161"],"award-info":[{"award-number":["022161"]}]},{"DOI":"10.13039\/501100001871","name":"PhD grant","doi-asserted-by":"publisher","award":["CQ\/UM (UID\/QUI\/00686\/2020)"],"award-info":[{"award-number":["CQ\/UM (UID\/QUI\/00686\/2020)"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"PhD grant","doi-asserted-by":"publisher","award":["SFRH\/BD\/145639\/2019"],"award-info":[{"award-number":["SFRH\/BD\/145639\/2019"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"PhD grant","doi-asserted-by":"publisher","award":["022161"],"award-info":[{"award-number":["022161"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Infrastructure Project","award":["CQ\/UM (UID\/QUI\/00686\/2020)"],"award-info":[{"award-number":["CQ\/UM (UID\/QUI\/00686\/2020)"]}]},{"name":"Infrastructure Project","award":["SFRH\/BD\/145639\/2019"],"award-info":[{"award-number":["SFRH\/BD\/145639\/2019"]}]},{"name":"Infrastructure Project","award":["022161"],"award-info":[{"award-number":["022161"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemosensors"],"abstract":"<jats:p>Anion sensing is a dynamic research field due to the biological and environmental importance of some organic or inorganic anions. Hydrazones show promising properties in the design of anion chemosensors due to the presence of proton donor and acceptor sites in their structure. In this work, two novel dinitrophenyl hydrazones, functionalized with a quinoline moiety, were synthesized and characterized by spectroscopic and spectrometric techniques. The interaction between the new compounds 3a\u2013b with different organic and inorganic anions was assessed. The two compounds showed a change in color from light yellow to magenta in the presence of H2PO4\u2212, CH3COO\u2212, BzO\u2212, CN\u2212, and F\u2212. The interactions were analyzed by spectrophotometric titrations and the stoichiometry of the interaction was assessed by the method of continuous variation. Compound 3b showed a remarkable sensitivity to CN\u2212, with a limit of detection of 0.35 \u00b5M. The interaction of compound 3b with CN\u2212 and F\u2212 was also analyzed by 1H NMR titrations, showing that an increasing concentration of anions induce a deprotonation of the NH and OH groups.<\/jats:p>","DOI":"10.3390\/chemosensors10100384","type":"journal-article","created":{"date-parts":[[2022,9,25]],"date-time":"2022-09-25T21:14:28Z","timestamp":1664140468000},"page":"384","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["New Dinitrophenyl Hydrazones as Colorimetric Probes for Anions"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3741-3039","authenticated-orcid":false,"given":"Rui P. C. L.","family":"Sousa","sequence":"first","affiliation":[{"name":"Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7915-4720","authenticated-orcid":false,"given":"Susana P. G.","family":"Costa","sequence":"additional","affiliation":[{"name":"Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8146-4231","authenticated-orcid":false,"given":"Rita B.","family":"Figueira","sequence":"additional","affiliation":[{"name":"Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7996-1626","authenticated-orcid":false,"given":"M. Manuela M.","family":"Raposo","sequence":"additional","affiliation":[{"name":"Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1016\/0003-2697(89)90031-6","article-title":"A Calorimetric Consumption Assay for the Measurement by Cultured Ceils of D-Glucose","volume":"177","author":"Blake","year":"1989","journal-title":"Anal. Biochem."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1039\/C4AY01429D","article-title":"Facile colorimetric detection of human chorionic gonadotropin based on the peptide-induced aggregation of gold nanoparticles","volume":"7","author":"Chang","year":"2015","journal-title":"Anal. 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