著者
Yuta Sagara Katsuyuki Shizu Hiroyuki Tanaka Hiroshi Miyazaki Kenichi Goushi Hironori Kaji Chihaya Adachi
出版者
(社)日本化学会
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
vol.44, no.3, pp.360-362, 2015-03-05 (Released:2015-03-05)
参考文献数
25
被引用文献数
57

A strategy for designing highly efficient thermally activated delayed fluorescence (TADF) emitters was reported. TADF emitters with donor–acceptor–donor (D–A–D)-type structures showed highly efficient TADF because of their small singlet–triplet energy gap and large oscillator strength. An organic light-emitting diode containing a D–A–D-type TADF emitter, cis-BOX2, exhibited a high external electroluminescence quantum efficiency of 17.6%.
著者
Hiroshi Ohkuma Tetsuya Nakagawa Katsuyuki Shizu Takuma Yasuda Chihaya Adachi
出版者
(社)日本化学会
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
vol.43, no.7, pp.1017-1019, 2014-07-05 (Released:2014-07-05)
参考文献数
26
被引用文献数
63

A spiro compound DPAA-AF combining an electron-accepting diazafluorene unit and an electron-donating bis(diphenylamino)acridane unit has been synthesized and used as an emitter in organic light-emitting diodes. DPAA-AF exhibits efficient thermally activated delayed fluorescence, and a device based on this compound emits blue-greenish electroluminescence with a maximum external quantum efficiency of 9.6%.
著者
Hiroyuki Mieno Takuma Yasuda Yu Seok Yang Chihaya Adachi
出版者
(社)日本化学会
雑誌
Chemistry Letters (ISSN:03667022)
巻号頁・発行日
vol.43, no.3, pp.293-295, 2014-03-05 (Released:2014-03-05)
参考文献数
24
被引用文献数
10

Thienoacene-based π-conjugated oligomers, DTT-NP8 and DTT-BT8, were designed and synthesized. Their strong intermolecular interactions originating from S···S contacts enable the fabrication of single-crystal microribbons via solution processing. Organic single-crystal transistors exhibited field-effect mobilities as high as 0.54 cm2 V−1 s−1 and on/off current ratio of ca. 106.