title: Highly selective fluorescent recognition of Zn2+ based on naphthalene macrocyclic derivative.
abstract: A new macrocyclic chemosensor containing two naphthalene fluorophores has been synthesized. The fluorescent properties of this receptor has been studied in the presence of various metal ions such as Na(+), Ag(+), Cr(3+), Mn(2+), Fe(3+), Co(2+), Ni(2+), Cu(2+), Zn(2+), Cd(2+) and Pb(2+). When increasing concentrations of Zn(2+) ions were introduced, the emission of L was drastically increased (EFE = 4.34). This special change was not observed when other metal ions were used; such highly selective fluorescent response indicates that this receptor can easily discriminate Zn(2+) ions from other similar species. Model calculations at DFT level further suggest the possible interaction mode, and relatively steric position between the host and guest also influence the optical response.
authors.affiliation: Department of chemistry, Payame Noor University, Hamedan, Iran. r azadbakht@yahoo.com
authors.forename: Reza
authors.initials: R
authors.lastname: Azadbakht
authors.forename: Maisam
authors.initials: M
authors.lastname: Parviz
authors.forename: Esmail
authors.initials: E
authors.lastname: Tamari
authors.forename: Hassan
authors.initials: H
authors.lastname: Keypour
authors.forename: Reza
authors.initials: R
authors.lastname: Golbedaghi
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D007477:Ions; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008670:Metals / Q000737:chemistry; D008956:Models, Chemical; D008962:Models, Theoretical; D009281:Naphthalenes / Q000737:chemistry*; D016011:Normal Distribution; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013053:Spectrophotometry / Q000379:methods; D015032:Zinc / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D007477:Ions; D008670:Metals; D009281:Naphthalenes; C031721:naphthalene; D015032:Zinc