{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T19:53:34Z","timestamp":1784836414535,"version":"3.55.0"},"reference-count":27,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2016,2,24]],"date-time":"2016-02-24T00:00:00Z","timestamp":1456272000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The application of IR 786 perchlorate (IR-786) as a selective optical sensor for cyanide anion in both organic solution (acetonitrile (MeCN), 100%) and solvent-free solid surfaces was demonstrated. In MeCN, IR-786 was selective to two anions in the following order: CN\u2212 &gt; OH\u2212. A significant change in the characteristic dark green color of IR-786 in MeCN to yellow was observed as a result of nucleophilic addition of CN\u2212 to the fluorophore, i.e., formation of IR 786-(CN), which was also verified by a blue shift in the 775 nm absorbance peak to 430 nm. A distinct green fluorescence emission from the IR-786-(CN) in MeCN was also observed, which demonstrated the selectivity of IR-786 towards CN\u2212 in MeCN. Fluorescence emission studies of IR-786 showed that the lower detection limit and the sensitivity of IR-786 for CN\u2212 in MeCN was 0.5 \u03bcM and 0.5 to 8 \u03bcM, respectively. The potential use of IR-786 as a solvent-free solid state sensor for the selective sensing and monitoring of CN\u2212 in the environment was also demonstrated. On solvent-free solid state surfaces, the sensitivity of the IR-786 to CN\u2212 in water samples was in the range of 50\u2013300 \u03bcM with minimal interference by OH\u2212.<\/jats:p>","DOI":"10.3390\/s16030271","type":"journal-article","created":{"date-parts":[[2016,2,24]],"date-time":"2016-02-24T04:09:51Z","timestamp":1456286991000},"page":"271","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["A Highly Selective Sensor for Cyanide in Organic Media and on Solid Surfaces"],"prefix":"10.3390","volume":"16","author":[{"given":"Belygona","family":"Barare","sequence":"first","affiliation":[{"name":"Department of Chemistry, Morgan State University, Baltimore, MD 21251, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ilknur","family":"Babahan","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Morgan State University, Baltimore, MD 21251, USA"},{"name":"Department of Chemistry, Adnan Menderes University, Aydin 09010, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4116-1746","authenticated-orcid":false,"given":"Yousef","family":"Hijji","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Earth Sciences, Qatar University, P.O. Box 2713, Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Enock","family":"Bonyi","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Morgan State University, Baltimore, MD 21251, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Solomon","family":"Tadesse","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Morgan State University, Baltimore, MD 21251, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kadir","family":"Aslan","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Morgan State University, Baltimore, MD 21251, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2016,2,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1039\/C3CS60316D","article-title":"Anion receptor chemistry: Highlights from 2011 and 2012","volume":"43","author":"Gale","year":"2014","journal-title":"Chem. 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