title: Two new isomerous fluorescent chemosensors for Al(3+) based on photoinduced electron transfer.
abstract: Two new isomerous PET fluorescent chemosensors (L and L') for Al(3+) have been designed, synthesized and characterized. The two chemosensors exhibited fluorescence enhancement upon binding Al(3+) in CH3CN by PET inhibition processes from both the sulfur and the nitrogen donors to anthracene. The job's plot, Benesi-Hildebrand plot and (1)H NMR titration experiments indicate that both chemosensors form a 1:1 complex with Al(3+). The binding constants were calculated to be (1.432±0.186)×10(5) and (1.427±0.970)×10(5), respectively. Furthermore, the lowest detection limit for Al(3+) in CH3CN was determined to be 4.8×10(-7)M and 2.2×10(-7)M, respectively.
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
authors.forename: Xiu-Juan
authors.initials: XJ
authors.lastname: Jiang
authors.forename: Hao
authors.initials: H
authors.lastname: Tang
authors.forename: Xiao-Yuan
authors.initials: XY
authors.lastname: Li
authors.forename: Shuang-Quan
authors.initials: SQ
authors.lastname: Zang
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Hou
authors.forename: Thomas C W
authors.initials: TC
authors.lastname: Mak
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D000535:Aluminum / Q000032:analysis*; D018360:Crystallography, X-Ray; D004583:Electrons; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D007536:Isomerism; D008027:Light; D009682:Magnetic Resonance Spectroscopy; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000097:Acetonitriles; D005456:Fluorescent Dyes; D000535:Aluminum; C032159:acetonitrile
keywords: Al(3+); Fluorescent chemosensors; Isomerous; PET