城戸・笹部・千葉研究室M2 野田泰登さん (Mr. Taito Noda) と笹部久宏准教授の高効率な蒸着／塗布型有機ELを実現する可溶性アントラセン誘導体青色発光材料群に関する論文が Wilely の ChemPlusChem (IF: 2.863) に受理されました。本研究の CV 測定では、山形大学の片桐先生、松永くんにお世話になりました。

Title: Constructing soluble anthracene-based blue emitters free of electrically inert alkyl chains for efficient evaporation- and solution-based OLEDs
By Taito Noda, Hisahiro Sasabe*, Tsukasa Owada, Ryo Sugiyama, Ayato Arai, Kengo Kumada, Hisaki Tsuneyama, Yu Saito, Junji Kido*, ChemPlusChem, 2022, accepted.

Abstract: Anthracene derivatives are one of the most promising blue emitters employed in organic light-emitting devices (OLEDs) because of their electrochemical and thermal stabilities. However, their high crystallinity owing to their large p-planar structures severely impedes the progress in the development of solution-based systems. In this work, we developed two types of highly soluble multifunctional anthracene derivatives terminated with ortho- biphenyl and triphenylamine moieties and showed highly soluble in general organic solvents such as toluene, tetrahydrofuran, and cyclohexanone at high concentrations (>10 mg mL−1), and showed blue emission with a peak wavelength of ~465 nm and a high photoluminescence quantum yield that ranges up to 81%. Notably, these emitters are suitable for fabricating both evaporation- and solution-based systems. The evaporation- based system OLED achieved a high external quantum efficiency (EQE) of 5.4%. While the solution-processed system realized 4.8%, exhibiting the best performance among the anthracene-based solution-processed OLEDs so far.

城戸・笹部・千葉研究室HP : https://oled.yz.yamagata-u.ac.jp/view.cgi?p=397