title: Fluorescence and metal-ion recognition properties of acetylacetone-based ligands.
abstract: A new acetylacetone-based ligand (Ligand 1) bearing pyrene unit was synthesized and the fluorescence and metal-ion recognition properties were investigated in the presence of a different metal ion in acetonitrile solution. The fluorescence emission of Ligand 1 was strongly quenched by complexation with Cu(2+) while no significant change was observed in the presence of other metal ions. The metal-ion selectivity changed from Cu(2+) to Ni(2+) when glycine moiety (-NH-CH2-CO-) was introduced into Ligand 1 as spacer. This result implies that hydrogen-bonding induced by the glycine moiety affects the binding ability of ligands to metal ions, resulting in change of the metal-ion selectivity.
authors.affiliation: Research Institute for Cell Engineering, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan. h-ando@aist.go.jp
authors.forename: Hisanori
authors.initials: H
authors.lastname: Ando
authors.affiliation: Research Institute for Cell Engineering, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Tawa
authors.affiliation: Institute for Biological Resources and Functions, AIST, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
authors.forename: Mutsuo
authors.initials: M
authors.lastname: Tanaka
mesh_terms: D000097:Acetonitriles / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D005453:Fluorescence; D006860:Hydrogen Bonding; D007477:Ions; D008024:Ligands; D008670:Metals / Q000737:chemistry*; D010422:Pentanones / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013696:Temperature
chemical_list: D000097:Acetonitriles; D007477:Ions; D008024:Ligands; D008670:Metals; D010422:Pentanones; C008790:acetylacetone; D003300:Copper; C032159:acetonitrile