[16p-K404-1~11] 12.4 Organic light-emitting devices and organic transistors

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-K404-8] Molecular Design for Converting Non-emissive Pentaazaphenalene to Highly Luminescent Materials

〇Yuka Yasuda¹, Katsuyuki Shizu¹, Hiroyuki Tanaka¹, Hironori Kaji¹ (1.ICR, Kyoto Univ.)

Keywords:

organic electroluminescence,TADF,breaking forbidden transition

Azaphenalenes have attracted much attention because of their potential to exhibit TADF and inverted singlet-triplet excited state (iST) properties. However, azaphenalene based emitters exhibit poor luminescent properties because of symmetrically forbidden S₁-S₀ transitions. In this study, we converted the non-emissive pentaazaphenalene (5AP) into highly luminescent materials by introducing donor and acceptor segments and breaking molecular symmetry.