{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T19:22:20Z","timestamp":1771010540351,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2010,3,12]],"date-time":"2010-03-12T00:00:00Z","timestamp":1268352000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A new macromolecule possessing two dansyl moieties and based on 2-[4-(2-aminoethylthio)butylthio]ethanamine was prepared as a fluorescent sensor and its mercury sensing properties toward various transition metal, alkali, and alkali earth ions were investigated. The designed compound exhibited pronounced Hg2+-selective ON-OFF type fluorescence switching upon binding. The new compoundprovided highly selective sensing to Hg2+ in acetonitrile-water solvent mixtures with a detection limit of 2.49 x 10-7 M or 50 ppb. The molecular modeling results indicated that ions-recognition of the sensor originated from a self assembly process of the reagentand Hg2+ to form a helical wrapping structure with the favorable electrostatic interactions of Hg2+coordinated with sulfur, oxygen, nitrogen atoms and aromatic moieties.<\/jats:p>","DOI":"10.3390\/molecules15031798","type":"journal-article","created":{"date-parts":[[2010,3,14]],"date-time":"2010-03-14T13:26:04Z","timestamp":1268573164000},"page":"1798-1810","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["Synthesis of a Novel Fluorescent Sensor Bearing Dansyl Fluorophores for the Highly Selective Detection of Mercury (II) Ions"],"prefix":"10.3390","volume":"15","author":[{"given":"Nantanit","family":"Wanichacheva","sequence":"first","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Silpakorn University, Nakorn Pathom 73000, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Supranee","family":"Watpathomsub","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Silpakorn University, Nakorn Pathom 73000, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vannajan Sanghiran","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kate","family":"Grudpan","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2010,3,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1002\/tox.10116","article-title":"Environmental exposure to mercury and its toxicopathologic implications for public health.","volume":"18","author":"Tchounwou","year":"2003","journal-title":"Environ. 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