title: Fluorescent "turn-on" detecting CN(-) by nucleophilic addition induced Schiff-base hydrolysis.
abstract: A new chemosensor Sz based on Schiff-base group as recognition site and naphthalene as the fluorescence signal group was designed and synthesised. It could fluorescent "turn-on" detect cyanide (CN(-)) via a novel mechanism of nucleophilic addition induced Schiff-base hydrolysis. Adding the CN(-) into the solution of Sz could induce Sz to emit blue fluorescence at 435 nm instantly. Moreover, Sz could also colorimetric detect CN(-). Upon the addition of CN(-), the Sz showed dramatic color change from yellow to colorless. These sensing procedures could not be interfered by other coexistent competitive anions such as F(-), AcO(-), H2PO4(-) and SCN(-). In addition, Sz showed high sensitivity for CN(-), the detection limits is 3.42×10(-8) M of CN(-), which is far lower than the WHO guideline of CN(-) in drinking water (less than 1.9×10(-6) M). The CN(-) test strips based on Sz could act as a convenient CN(-) test kits.
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China. Electronic address: linqi2004@126.com.
authors: Qi
authors: Q
authors: Lin
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China.
authors: Yi
authors: Y
authors: Cai
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China.
authors: Qiao
authors: Q
authors: Li
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China.
authors: Bing-Bing
authors: BB
authors: Shi
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China.
authors: Hong
authors: H
authors: Yao
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China.
authors: You-Ming
authors: YM
authors: Zhang
authors: Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, PR China. Electronic address: weitaibao@126.com.
authors: Tai-Bao
authors: TB
authors: Wei
mesh_terms: D002855:Chromatography, Thin Layer; D003486:Cyanides / Q000032:analysis*; D005456:Fluorescent Dyes / Q000737:chemistry*; D006868:Hydrolysis; D057230:Limit of Detection; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
chemical_list: D003486:Cyanides; D005456:Fluorescent Dyes; D012545:Schiff Bases
keywords: Chemosensor; Cyanide; Fluorescent “turn-on”; High sensitivity; Specific selectivity