{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T03:39:37Z","timestamp":1782099577013,"version":"3.54.5"},"reference-count":74,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2020,3,17]],"date-time":"2020-03-17T00:00:00Z","timestamp":1584403200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003407","name":"Ministero dell\u2019Istruzione, dell\u2019Universit\u00e0 e della Ricerca","doi-asserted-by":"publisher","award":["2015MP34H3"],"award-info":[{"award-number":["2015MP34H3"]}],"id":[{"id":"10.13039\/501100003407","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Synthesis of the new scorpiand ligand L composed of a [9]aneN3 macrocyclic ring bearing a CH2CH2NHCH2-anthracene tail is reported. L forms both cation (Zn2+) and anion (phosphate, benzoate) complexes. In addition, the zinc complexes of L bind these anions. The equilibrium constants for ligand protonation and complex formation were determined in 0.1 M NaCl aqueous solution at 298.1 \u00b1 0.1 K by means of potentiometric (pH-metric) titrations. pH Controlled coordination\/detachment of the ligand tail to Zn2+ switch on and off the fluorescence emission from the anthracene fluorophore. Accordingly, L is able to sense Zn2+ in the pH range 6\u201310 down to nM concentrations of the metal ion. L can efficiently sense Zn2+ even in the presence of large excess of coordinating anions, such as cyanide, sulphide, phosphate and benzoate, despite their ability to bind the metal ion.<\/jats:p>","DOI":"10.3390\/molecules25061355","type":"journal-article","created":{"date-parts":[[2020,3,20]],"date-time":"2020-03-20T07:29:07Z","timestamp":1584689347000},"page":"1355","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["Sensing Zn2+ in Aqueous Solution with a Fluorescent Scorpiand Macrocyclic Ligand Decorated with an Anthracene Bearing Tail"],"prefix":"10.3390","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9780-7542","authenticated-orcid":false,"given":"Matteo","family":"Savastano","sequence":"first","affiliation":[{"name":"Department of Chemistry \u201cUgo Schiff\u201d, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matteo","family":"Fiaschi","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cUgo Schiff\u201d, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanni","family":"Ferraro","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cUgo Schiff\u201d, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9137-2509","authenticated-orcid":false,"given":"Paola","family":"Gratteri","sequence":"additional","affiliation":[{"name":"Department of NEUROFARBA-Pharmaceutical and Nutraceutical section, and Laboratory of Molecular Modeling Cheminformatics &amp; QSAR, University of Florence, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Palma","family":"Mariani","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cUgo Schiff\u201d, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1082-3911","authenticated-orcid":false,"given":"Antonio","family":"Bianchi","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cUgo Schiff\u201d, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4602-0405","authenticated-orcid":false,"given":"Carla","family":"Bazzicalupi","sequence":"additional","affiliation":[{"name":"Department of Chemistry \u201cUgo Schiff\u201d, University of Florence, Via della Lastruccia, 3-13, 50019 Sesto Fiorentino, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,3,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5139","DOI":"10.1021\/ja00251a016","article-title":"N-(aminoethyl)cyclam: A tetraaza macrocycle with a coordinating tail (scorpiand). 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