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AuthorBarare, Belygona
AuthorBabahan, Ilknur
AuthorHijji, Yousef M.
AuthorBonyi, Enock
AuthorTadesse, Solomon
AuthorAslan, Kadir
Available date2016-10-30T06:46:15Z
Publication Date2016-02-24
Publication NameSensorsen_US
Identifierhttp://dx.doi.org/10.3390/s16030271
CitationBarare, B.; Babahan, I.; Hijji, Y.M.; Bonyi, E.; Tadesse, S.; Aslan, K. A Highly Selective Sensor for Cyanide in Organic Media and on Solid Surfaces. Sensors 2016, 16:271.
URIhttp://hdl.handle.net/10576/4932
AbstractThe 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− > OH−. 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− 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− in MeCN. Fluorescence emission studies of IR-786 showed that the lower detection limit and the sensitivity of IR-786 for CN− in MeCN was 0.5 μM and 0.5 to 8 μM, respectively. The potential use of IR-786 as a solvent-free solid state sensor for the selective sensing and monitoring of CN− in the environment was also demonstrated. On solvent-free solid state surfaces, the sensitivity of the IR-786 to CN− in water samples was in the range of 50–300 μM with minimal interference by OH−.
SponsorMorgan State University
Languageen
PublisherMDPI AG
Subjectoptical sensors
Subjectnear-infrared fluorophores
Subjectcyanine dyes
Subjectcyanide sensing
Subjectchemical sensors
Subjectanion sensing
SubjectIR-786
TitleA Highly Selective Sensor for Cyanide in Organic Media and on Solid Surfaces
TypeArticle
Issue Number271
Volume Number16
dc.identifier.essn 1424-8220


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