title: Quenching effect of some heavy metal ions on the fast peroxyoxalate-chemiluminescence of 1-(dansylamidopropyl)-1-aza-4,7,10-trithiacyclododecane as a novel fluorophore.
abstract: The fast chemiluminescence (CL) arising from the reaction of bis(2,4,6-trichlorophenyl)oxalate (TCPO) with hydrogen peroxide in the presence of 1-(dansylamidopropyl)-1-aza-4,7,10-trithiacyclododecane (L) as a novel fluorophore, and imidazole as catalyst, has been studied in ethyl acetate solution. The relationships between the chemiluminescence intensity and concentrations of TCPO, imidazole, hydrogen peroxide and L are reported. In the presence of imidazole as catalyst, the entire CL signal was completed in less than 3s. The quenching effect of Cu(2+), Pb(2+), Cd(2+), Hg(2+) and Ag(+) ions on the chemiluminescent system was investigated, the resulting Stern-Volmer plots were obtained and the K(Q) values were calculated. It was found that the quenching effect of metal ions on the chemiluminescence of L decreases in the order Cu(2+)>Pb(2+)>Cd(2+)>Hg(2+)>Ag(+).
authors: Department of Chemistry, Razi University, Kermanshah, Iran. mshamsipur@yahoo.com
authors: Mojtaba
authors: M
authors: Shamsipur
authors: Kiomars
authors: K
authors: Zargoosh
authors: Seyed Morteza
authors: SM
authors: Hosseini
authors: Claudia
authors: C
authors: Caltagirone
authors: Vito
authors: V
authors: Lippolis
mesh_terms: D003619:Dansyl Compounds / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry; D020450:Heavy Ions; D006573:Heterocyclic Compounds, 1-Ring / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements; D019216:Metals, Heavy / Q000737:chemistry / Q000494:pharmacology*; D008954:Models, Biological; D010070:Oxalates / Q000737:chemistry* / Q000494:pharmacology; D013050:Spectrometry, Fluorescence; D013457:Sulfur Compounds / Q000737:chemistry
chemical_list: C545077:1-(dansylamidopropyl)-1-aza-4,7,10-trithiacyclododecane; D003619:Dansyl Compounds; D005456:Fluorescent Dyes; D006573:Heterocyclic Compounds, 1-Ring; D019216:Metals, Heavy; D010070:Oxalates; D013457:Sulfur Compounds; C044622:peroxyoxalate