title: A simple colorimetric chemosensor bearing a carboxylic acid group with high selectivity for CN-.
abstract: A new simple 'naked eye' chemosensor 1 (sodium (E)-2-((2-(3-hydroxy-2-naphthoyl)hydrazono)methyl)benzoate) has been synthesized for detection of CN- in a mixture of DMF/H2O (9:1). The sensor 1 comprises of a naphthoic hydrazide as efficient hydrogen bonding donor group and a benzoic acid as the moiety with the water solubility. The receptor 1 showed high selectivity toward cyanide ions in a 1:1 stoichiometric manner, which induces a fast color change from colorless to yellow for CN- over other anions. Therefore, receptor 1 could be useful for cyanide detection in aqueous environment, displaying a high distinguishable selectivity from hydrogen bonded anions and being clearly visible to the naked eye.
authors: Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea; Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea.
authors: Gyeong Jin
authors: GJ
authors: Park
authors: Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea; Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea.
authors: Ye Won
authors: YW
authors: Choi
authors: Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea; Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea. Electronic address: dongkuk@seoultech.ac.kr.
authors: Dongkuk
authors: D
authors: Lee
authors: Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea; Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea. Electronic address: chealkim@seoultech.ac.kr.
authors: Cheal
authors: C
authors: Kim
mesh_terms: D000838:Anions; D002264:Carboxylic Acids / Q000737:chemistry*; D003124:Colorimetry / Q000379:methods*; D003486:Cyanides / Q000138:chemical synthesis / Q000737:chemistry*; D012996:Solutions; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000838:Anions; D002264:Carboxylic Acids; D003486:Cyanides; D012996:Solutions
keywords: Carboxylic acid; Colorimetric; Cyanide; Deprotonation; Naphthoic hydrazide