Molecular Design for Blue Thermal Activated Delayed Fluorescence Materials: Substitution Position Effect

Geng Y; Cui LS; Kim JU; Nakanotani H; Adachi C

Chemistry Letters, Vol.46, No.10, 1490-1492, 2017

Geng Y, Cui LS, Kim JU, Nakanotani H, Adachi C

Three emitters having a donor-phenyl-acceptor structure are considered as thermally activated delayed fluorescence (TADF) materials. They present different triplet excited-state energies depending on the substitution positions. Consequently, two materials exhibit blue emission with TADF properties. The OLEDs based on o-CzXTN provided a maximum EQE as high as 10.6%.

Keywords:Thermally activated delayed fluorescence (TADF);Organic light-emitting diode (OLED);Blue emission