A colorimetric chemosensor based on a Schiff base for highly selective sensing of cyanide in aqueous solution: The influence of solvents

Yu Jeong Na, Gyeong Jin Park, Hyun Yong Jo, Seul Ah Lee, Cheal Kim

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

A new highly selective colorimetric chemosensor 1 (E)-9-(((2-hydroxy-5-nitrophenyl)imino)methyl)-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-8-ol for CN- was developed. Receptor 1 showed exclusive response toward cyanide by a color change in aqueous solution. However, in aprotic solvents and methanol, the unique selectivity of 1 for CN- disappeared, and its nonselective color change was observed for other anions. This phenomenon could be possibly explained by the combination of the basicity and the hydrogen bonding ability of the anions. Moreover, 1 could be used as a practical, visible colorimetric test kit in an aqueous environment.

Original languageEnglish
Pages (from-to)5769-5776
Number of pages8
JournalNew Journal of Chemistry
Volume38
Issue number12
DOIs
StatePublished - 1 Dec 2014

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