title: A simple-structured acridine derivative as a fluorescent enhancement chemosensor for the detection of Pd2+ in aqueous media.
abstract: 4,5-Bis(hydroxymethyl) acridine (sensor 1) has been discovered and synthesized as a simple-structured Pd(2+) fluorescent probe. Sensor 1 showed highly selective recognition toward Pd(2+) over other examined metal ions in aqueous solution. Under the optimized condition, fluorescence intensity was linearly proportional to the concentration of Pd(2+) in the 0-1 μM concentration range with detection limits of 0.021 μM. The EDTA-adding and stoichiometry experiments indicated that sensor 1 was a reversible chemosensor for Pd(2+) with a 2:1 ligand/metal complex at neutral pH. Moreover, the sensor 1 was also successfully applied to determination of Pd(2+) in water samples and palladium-containing catalyst, which made it attractive for sensing applications.
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China. Electronic address: zhouyanmei@henu.edu.cn.
authors.forename: Yanmei
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Huang
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Qingyou
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Yinghao
authors.initials: Y
authors.lastname: Min
authors.affiliation: Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
authors.forename: Enze
authors.initials: E
authors.lastname: Wang
mesh_terms: D000166:Acridines / Q000737:chemistry*; D002413:Cations, Divalent / Q000032:analysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D057230:Limit of Detection; D010165:Palladium / Q000032:analysis*; D013050:Spectrometry, Fluorescence / Q000379:methods; D014867:Water / Q000032:analysis*
chemical_list: D000166:Acridines; D002413:Cations, Divalent; D005456:Fluorescent Dyes; D014867:Water; D010165:Palladium
keywords: Acridine; Aqueous solution; Enhancement; Fluoroionophore; Palladium