[17a-PA04-1~18] 12.4 Organic light-emitting devices and organic transistors

[17a-PA04-1] Development of Carbazole-Triazine Dendrimer TADF Materials with Bulky Substituents

Hiroki Ikebe¹, Kohei Nakao², Minori Furukori^3,4, Yasuo Nakayama^3,4, Takuya Hosokai^3,4, 〇Ken Albrecht¹ (1.Kyushu Univ., 2.Kyushu Univ. IMCE, 3.Tokyo Univ. Sci., 4.AIST)

Keywords:Dendrimer, Thermally activated delayed fluorescence, Carbazole

Recently, carbazole-triazine dendrimers with various substituents and generations have been reported. in order to suppress concentration quenching, second-generation dendrimers with three bulky substituents, adamantyl, tetraphenylphenyl, and phenylfluorene, were synthesized and their properties were measured. The dendrimer with phenylfluorene exhibited the highest PLQY of 81% in neat films and the highest reverse intersystem crossing rate constant.