title: Modular Synthesis of Aromatic Hydrocarbon Macrocycles for Simplified, Single-Layer Organic Light-Emitting Devices.
abstract: A method for the modular synthesis of aromatic hydrocarbon macrocycles has been developed for base materials in single-layer organic light-emitting devices. The method with Ir-catalyzed direct C-H borylation and Suzuki-Miyaura coupling was concise and scalable, which allowed for a gram-scale preparation of aromatic hydrocarbon macrocycles that have bulky substituents at the periphery. The new arylated hydrocarbon macrocycles enabled a quantitative electro-optical conversion in organic light-emitting devices with a phosphorescent emitter, which is, notably, in a single-layer architecture consisting of two regions of doped and undoped materials. The highest external quantum efficiencies reached 24.8%, surpassing those of previous hydrocarbon base materials.
authors.affiliation: JST , ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Koki
authors.initials: K
authors.lastname: Ikemoto
authors.forename: Asami
authors.initials: A
authors.lastname: Yoshii
authors.affiliation: JST , ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan.|Konica Minolta , Ishikawa-cho, Hachioji 192-8505, Japan.
authors.forename: Tomoo
authors.initials: T
authors.lastname: Izumi
authors.affiliation: JST , ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan.|Konica Minolta , Ishikawa-cho, Hachioji 192-8505, Japan.
authors.forename: Hideo
authors.initials: H
authors.lastname: Taka
authors.affiliation: Konica Minolta , Ishikawa-cho, Hachioji 192-8505, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kita
authors.forename: Jing Yang
authors.initials: JY
authors.lastname: Xue
authors.forename: Ryo
authors.initials: R
authors.lastname: Kobayashi
authors.affiliation: JST , ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Sota
authors.initials: S
authors.lastname: Sato
authors.affiliation: JST , ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Isobe