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Structurally Nontraditional Benzo[ c ]cinnoline‐Based Electron‐Transporting Materials with 3D Molecular Interaction Architecture by Yang Shi; Zhengyang Bin; Jiahui Liu; Weiguo Han; Ge Yang; Bowen Lei; Jingsong You is a Chemistry article available to read on EtoBox.

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## Abstract The academically widely used electron‐transporting materials (ETMs) typically suffer from low glass transition temperatures (T~g~) that could lead to poor device stability. Considering practical applications, we herein put forward a “3D molecular interaction architecture” strategy to design high‐performance ETMs. As a proof‐of‐concept, a type of structurally nontraditional ETMs with the benzo[c]cinnoline (BZC) skeleton have been proposed and synthesized by the C−H/C−H homo‐coupling of N‐acylaniline as the key step. 2,9‐diphenylbenzo[c]cinnoline (DPBZC) exhibits strong intermolecular interactions that feature a 3D architecture, which boosts T~g~ to exceedingly high 218 °C with a fast electron mobility (μ~e~) of 6.4×10^−4^ cm^2^ V^−1^ s^−1^. DPBZC‐based fluorescent organic light‐emitting diodes show outstanding electroluminescent performances with an external quantum efficiency of 20.1 % and a power efficiency as high as 70.6 lm W^−1^, which are superior to those of the devices with the commonly used ETMs.

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Author

Yang Shi; Zhengyang Bin; Jiahui Liu; Weiguo Han; Ge Yang; Bowen Lei; Jingsong You

Publisher

Wiley

Published

2022

Language

EN

Field

Chemistry (Physical Sciences)