{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T05:58:39Z","timestamp":1776837519186,"version":"3.51.2"},"reference-count":46,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2010,12,10]],"date-time":"2010-12-10T00:00:00Z","timestamp":1291939200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A new chemosensor molecule 3 based on a ferrocene-quinoxaline dyad recognizes mercury (II) cations in acetonitrile solution. Upon recognition, an anodic shift of the ferrocene\/ferrocenium oxidation peaks and a progressive red-shift (\u0394\u03bb = 140 nm) of the low-energy band, are observed in its absorption spectrum. This change in the absorption spectrum is accompanied by a colour change from orange to deep green, which can be used for a \u201cnaked-eye\u201d detection of this metal cation.<\/jats:p>","DOI":"10.3390\/s101211311","type":"journal-article","created":{"date-parts":[[2010,12,10]],"date-time":"2010-12-10T11:23:25Z","timestamp":1291980205000},"page":"11311-11321","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["A Ferrocene-Quinoxaline Derivative as a Highly Selective Probe for Colorimetric and Redox Sensing of Toxic Mercury(II) Cations"],"prefix":"10.3390","volume":"10","author":[{"given":"Fabiola","family":"Zapata","sequence":"first","affiliation":[{"name":"Departamento de Quimica Organica, Facultad de Quimica, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antonio","family":"Caballero","sequence":"additional","affiliation":[{"name":"Departamento de Quimica Organica, Facultad de Quimica, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro","family":"Molina","sequence":"additional","affiliation":[{"name":"Departamento de Quimica Organica, Facultad de Quimica, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alberto","family":"Tarraga","sequence":"additional","affiliation":[{"name":"Departamento de Quimica Organica, Facultad de Quimica, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2010,12,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1515","DOI":"10.1021\/cr960386p","article-title":"Signaling recognition events with fluorescent sensors and switches","volume":"97","author":"Gunaratne","year":"1997","journal-title":"Chem Rev"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/S0010-8545(00)00246-0","article-title":"Design principles of fluorescent molecular sensors for cation recognition","volume":"205","author":"Valeur","year":"2000","journal-title":"Coord Chem Rev"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1016\/j.ccr.2005.04.022","article-title":"Light-emitting molecular devices based on transition metals","volume":"250","author":"Amendola","year":"2006","journal-title":"Coord Chem Rev"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"3585","DOI":"10.1021\/es0483746","article-title":"Effects of mercury on neurochemical receptors in Wild River Otters (Lontra canadensis)","volume":"39","author":"Basu","year":"2005","journal-title":"Environ Sci Technol"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1814","DOI":"10.1021\/tx0501536","article-title":"Visible study of mercuric ion and its conjugate in living cells of mammals and plants","volume":"18","author":"Zhang","year":"2005","journal-title":"Chem Res Toxicol"},{"key":"ref_6","unstructured":"US EPA EPA-452\/R-05-003. 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