[20p-W521-1~16] 12.4 Organic light-emitting devices and organic transistors

[20p-W521-11] Absence of delayed fluorescence with fluorescent molecules having spatially orthogonal two anthracenes in organic light emitting devices

〇Yong-Jin Pu^1,2, Rei Satake¹, Takahiro Ohtomo¹, Rika Hayashi³, Tohru Sato^3,4, Hirofumi Sato^3,4, Hiroshi Katagiri¹, Hisahiro Sasabe¹, Junji Kido¹ (1.Yamagata Univ., 2.JST-PRESTO, 3.Dept Mol Eng, Kyoto Univ, 4.ESICB, Kyoto Univ.)

Keywords:organic light emitting diode

In OLEDs, reverse intersystem crossing at electron-hole pair, charge transfer complex (CT), or hot excited state (T_n ≥ 2) have been proposed. We designed and synthesized a bianthracene compound, in which two anthracene groups were directly linked. Low T₁ level (1.75 eV) of the binanthracene compound propose that TADF process is impossible to occur. The compound did not showed any delayed electroluminescene, indicating absence of TTA process.