title: Efficient blue organic light-emitting diodes using N(2) ,N(2) ,N(11) ,N(11) ,5,6,7,8-octaphenyltriphenylene-2,11-diamine derivatives.
abstract: In this study, we have synthesized phenyl-substituted triphenylene derivatives, using the Diels-Alder reaction and the Buchwald-Hartwig reaction. To investigate electroluminescence properties of these materials, multilayer organic light-emitting diode (OLED) devices were fabricated with a structure of indium-tin-oxide (ITO) (180 nm)/4,4'-bis(N-(1-naphthyl)-N-phenylamino)biphenyl (NPB) (50 nm)/blue-emitting materials (1-3) (30 nm)/bathophenanthroline (Bphen) (35 nm)/lithium quinolate (Liq) (2 nm)/Al (100 nm). A device using N(2) ,N(2) ,N(11) ,N(11) ,5,6,7-heptaphenyltriphenylene-2,11-diamine (2) exhibited efficient blue emission with luminous, power, and external quantum efficiencies of 0.92 cd/A, 0.67 lm/W, and 1.17% at 20 mA/cm(2) , respectively. The Commission International de L'Éclairage coordinates of this device were (x = 0.15, y = 0.09) at 6.0 V. Copyright © 2015 John Wiley & Sons, Ltd.
authors.affiliation: Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea.
authors.forename: Young Seok
authors.initials: YS
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea.
authors.forename: Su Jin
authors.initials: SJ
authors.lastname: Jeong
authors.affiliation: Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea.
authors.forename: Hyun Woo
authors.initials: HW
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea.
authors.forename: Jwajin
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Information Display, Hongik University, Seoul, 121-791, Korea.
authors.forename: Song Eun
authors.initials: SE
authors.lastname: Lee
authors.affiliation: Department of Information Display, Hongik University, Seoul, 121-791, Korea.
authors.forename: Young Kwan
authors.initials: YK
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea.
authors.forename: Seung Soo
authors.initials: SS
authors.lastname: Yoon
mesh_terms: D003116:Color; D003959:Diamines / Q000138:chemical synthesis / Q000737:chemistry*; D008027:Light; D049449:Luminescence; D015394:Molecular Structure; D011789:Quantum Theory
chemical_list: D003959:Diamines; C000615632:N2,N2,N11,N11,5,6,7,8-octaphenyltriphenylene-2,11-diamine
keywords: Buchwald-Hartwig reaction 1; Diels-Alder reaction; blue fluorescence; organic light-emitting diode; triphenylene