title: Novel formation of diimidazo[1,2-a:2',1'-c]quinoxaline derivatives and their optical properties.
abstract: Reaction of 1,2-di(imidazolyl)benzene treated with n-BuLi proceeded to give diimidazo[1,2-a:2',1'-c]quinoxaline in the presence of iodine or Pd(PPh(3))(4). Blue fluorescence was observed from 3,10-diarylated diimidazoquinoxalines with high quantum yield. They were also applied to organic light-emitting devices as emitters, in which the diphenyl derivative emits a nearly pure blue light.
authors.affiliation: Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University, 1-33 Yayoicho, Inageku, Chiba 263-8522, Japan. smatsumo@faculty.chiba-u.jp
authors.forename: Shoji
authors.initials: S
authors.lastname: Matsumoto
authors.forename: Erdenebolor
authors.initials: E
authors.lastname: Batmunkh
authors.forename: Motohiro
authors.initials: M
authors.lastname: Akazome
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Takata
authors.forename: Michiko
authors.initials: M
authors.lastname: Tamano
mesh_terms: D001554:Benzene / Q000138:chemical synthesis / Q000737:chemistry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D007093:Imidazoles / Q000138:chemical synthesis / Q000737:chemistry*; D011810:Quinoxalines / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D007093:Imidazoles; D011810:Quinoxalines; C029899:imidazole; D001554:Benzene