title: Fluorescent sensor for selective detection of Al(3+) based on quinoline-coumarin conjugate.
abstract: A fluorescence probe, 8-formyl-7-hydroxyl-4-methyl coumarin - (2'-methylquinoline-4-formyl) hydrazone (L) has been synthesized. The chemosensor is found preferential binding to Al(3+) in presence of other competitive ions with associated changes in its optical and fluorescence spectra behavior. Upon addition of Al(3+) to a solution of L, it shows 200-fold enhancement of fluorescence intensity which might be attributed to form a 2:1 stoichiometry of the binding mode of LAl(III) and the chelation enhanced fluorescence (CHEF) process at 479nm in ethanol. The lowest detection limit for Al(3+) is determined as 8.2×10(-7)M.
authors.affiliation: College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
authors.forename: Jing-can
authors.initials: JC
authors.lastname: Qin
authors.affiliation: College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
authors.forename: Tian-rong
authors.initials: TR
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
authors.forename: Bao-dui
authors.initials: BD
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China. Electronic address: yangzy@lzu.edu.cn.
authors.forename: Zheng-yin
authors.initials: ZY
authors.lastname: Yang
authors.affiliation: College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
authors.forename: Long
authors.initials: L
authors.lastname: Fan
mesh_terms: D000535:Aluminum / Q000032:analysis*; D002412:Cations / Q000032:analysis*; D003374:Coumarins / Q000138:chemical synthesis / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D057230:Limit of Detection; D011804:Quinolines / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods
chemical_list: D002412:Cations; D003374:Coumarins; D005456:Fluorescent Dyes; D011804:Quinolines; C030123:coumarin; D000535:Aluminum; C037219:quinoline
keywords: Aluminum ion; CHEF; Coumarin; Fluorescence sensor