A Highly Selective and Sensitive Fluorescent Probe Recognition for Co2+ in Aqueous Media Based on 8‐Hydroxyquinolin‐2‐carbaldehyde‐2‐pyridylformylhydrazone Derivative. Issue 12 (20th December 2016)

• Record Type: Journal Article
• Authors: Zhong, Keli; Zhao, Jie; Zhou, Xue; Hou, Shuhua; Bian, Yanjiang; Li, Jianrong; Tang, Lijun
• Is Part Of: Chinese journal of chemistry. Volume 34:Issue 12(2016:Dec.)
• Page Start: 1329
• Page End: 1334
• Publication Date: 2016-12-20
• Subjects: fluorescent probe -- Co2+ recognition -- aqueous media -- environmental; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201600555
• Languages: English
• ISSNs: 1001-604X

Abstract

Abstract: A new (8‐hydroxyquinolin‐2‐yl)methylene picolinohydrazide derivative (L ) has been successfully synthesized and characterized. The probeL displays high selectivity to Co 2+ in CH3 CN/HEPES (1:1, Ｖ / Ｖ, 10 mmol·L −1, pH=7.4) with a fluorescence "ON‐OFF" response. The Co 2+ ion recognition event possesses some distinct features including rapid response, high selectivity and sensitivity, good anti‐interference ability and being applicable within a wide pH range. Based on job's plot and ESI‐MS studies, the 1:1 binding mode was proposed. The binding constant ofL and Co 2+ is 1.63×10 8 L·mol −1 and the detection limit is 1.15 µmol·L −1 . Natural water samples experiments revealed that probeL can be potentially applied to the detection of Co 2+ in real environment. Abstract : A new fluorescence probe (L ) based on 8‐hydroxyquinolin was prepared. ProbeL has good selectivity and sensitivity to Co 2+ in aqueous media. The probe has potential application in real environment.