Modular Synthesis of Aromatic Hydrocarbon Macrocycles for Simplified, Single-Layer Organic Light-Emitting Devices

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• 作者：Koki Ikemoto ; Asami Yoshii ; Tomoo Izumi ; Hideo Taka ; Hiroshi Kita ; Jing Yang Xue ; Ryo Kobayashi ; Sota Sato ; Hiroyuki Isobe
• 刊名：Journal of Organic Chemistry
• 出版年：2016
• 出版时间：January 15, 2016
• 年：2016
• 卷：81
• 期：2
• 页码：662-666
• 全文大小：315K
• ISSN：1520-6904

文摘

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.