@article{oai:soar-ir.repo.nii.ac.jp:00013395,
 author = {Ichikawa,  Musubu and Wakabayashi,  Kenta and Hayashi,  Shuichi and Yokoyama,  Norimasa and Koyama,  Toshiki and Taniguchi,  Yoshio},
 issue = {12},
 journal = {ORGANIC ELECTRONICS},
 month = {Dec},
 note = {We demonstrated that 1,3,5-tris([2',2 '']bipyridin-6'-yl) benzene (BpyB) and 1,3,5-tris([ 2',2 '',6 '',2''']terpyridin-6'-yl)benzene (TpyB) are good electron-transport (ET) layer materials for organic light-emitting devices (OLEDs). The new materials exhibit high electron mobilities of around 10 (4) cm(2) V (1) s (1), and OLEDs comprising the materials operate at lower voltage than the OLEDs with tris(8-hydroxyquinolinato) aluminum (Alq) as an ET material. The new materials are also useful for phosphorescent OLEDs in blue-, green-, and red-light-emitting devices, where they function as both electron-transporting and hole-blocking materials. Phosphorescent OLEDs with the new materials operate at lower voltage (while maintaining comparable external quantum efficiencies of electroluminescence) than does the corresponding reference device with bathocuproine/Alq as electron-transporting and hole-blocking layers., Article, ORGANIC ELECTRONICS. 11(12):1966-1973 (2010)},
 pages = {1966--1973},
 title = {Bi- or ter-pyridine tris-substituted benzenes as electron-transporting materials for organic light-emitting devices},
 volume = {11},
 year = {2010}
}