A new Schiff-based chemosensor for chromogenic sensing of Cu2+, Co2+ and S2− in aqueous solution: experimental and theoretical studies. (27th April 2017)

• Record Type: Journal Article
• Authors: Min, Cheol Hong; Na, Sangkyun; Shin, Jae Eun; Kim, Jae Kyun; Jo, Tae Geun; Kim, Cheal
• Is Part Of: New journal of chemistry. Volume 41:Number 10(2017)
• Page Start: 3991
• Page End: 3999
• Publication Date: 2017-04-27
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj00054e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A new Schiff-based multifunctional colorimetric chemosensor1 was developed for the detection of various analytes (Cu 2+, Co 2+ and S 2− ). Abstract : A new Schiff-based multifunctional colorimetric chemosensor1 was developed for the detection of various analytes (Cu 2+, Co 2+ and S 2− ). Sensor1 could simply monitor Cu 2+ and Co 2+ via the naked eye in an aqueous environment. The quite low detection limits were found to be 0.19 μM for Cu 2+ and 0.18 μM for Co 2+, which were much lower than the values recommended by the World Health Organization (WHO) for Cu 2+ (31.5 μM) and Environmental Protection Agency (EPA) for Co 2+ (17 μM). Importantly, 1 showed high preferential selectivity for Cu 2+ and Co 2+ over competitive metal ions. For practical applications, the sensing abilities of1 for detecting Cu 2+ and Co 2+ were examined in real water samples. In addition, 1 exhibited high selectivity for S 2− even in the presence of other anions without any interference. Moreover, the sensing mechanisms of1 toward Cu 2+, Co 2+ and S 2− were explained by theoretical calculations.