A highly sensitive and selective chemosensor for Pb2+ based on quinoline–coumarin. Issue 59 (2nd October 2018)

• Record Type: Journal Article
• Authors: Meng, Xianjiao; Cao, Duanlin; Hu, Zhiyong; Han, Xinghua; Li, Zhichun; Ma, Wenbing
• Is Part Of: RSC advances. Volume 8:Issue 59(2018)
• Page Start: 33947
• Page End: 33951
• Publication Date: 2018-10-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra04935a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A highly sensitive and selective fluorescent chemosensor1 was synthesized and used for naked eye detection of Pb 2+ . Abstract : In this study, a highly sensitive and selective fluorescent chemosensor, ethyl( E )-2-((2-((2-(7-(diethylamino)-2-oxo-2 H -chromene-3-carbonyl)hydrazono)methyl)quinolin-8-yl)oxy)acetate (1 ), was synthesized and characterized by 1 H NMR, 13 C NMR and ESI-MS. Sensor1 showed an "on–off" fluorescence response to Pb 2+ with a 1 : 1 binding stoichiometry in CH3 CN/HEPES buffer medium (9 : 1 v/v). The detection limit of sensor1 to Pb 2+ was determined to be 0.5 μM, and the stable pH range for Pb 2+ detection was from 4 to 8.