TY - JOUR
T1 - Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics
AU - Yang, Minlang
AU - Park, Inseob
AU - Yasuda, Takuma
N1 - Funding Information:
This work was supported in part by Grant-in-Aid for JSPS KAKENHI Grant No. JP18H02048 (T.Y.) and JP19K15651 (I.S.P.), the Research Foundation for the Electrotechnology of Chubu (T.Y.), Hoso Bunka Foundation (T.Y.), and the Murata Science Foundation (T.Y.). The authors are grateful for Nippon Soda Co., Ltd. for generous support and helpful discussion throughout this study, Mr. Noriyuki Kiyonaga for his support in the electrochemical measurements, and also for the support provided by the Cooperative Research Program of “Network Joint Research Center for Materials and Devices” and the computer facilities at the Research Institute for Information Technology, Kyushu University.
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/11/18
Y1 - 2020/11/18
N2 - Herein, we demonstrate that the strategic implementation of electron-accepting tricoordinate boron and electron-donating carbazole subunits into polycyclic aromatic hydrocarbons (PAHs) produces a family of attractive full-color luminophores that can emit narrowband and efficient thermally activated delayed fluorescence (TADF). A versatile modular design for these boron- and carbazole-embedded PAHs can facilitate the systematic modulation of their photophysical and optoelectronic properties. Organic light-emitting diodes that utilize these PAHs as TADF emitters demonstrate narrowband electroluminescence from blue to red, achieving high maximum external quantum efficiencies of 29.3%, 31.8%, and 22.0% for blue, green, and red, respectively.
AB - Herein, we demonstrate that the strategic implementation of electron-accepting tricoordinate boron and electron-donating carbazole subunits into polycyclic aromatic hydrocarbons (PAHs) produces a family of attractive full-color luminophores that can emit narrowband and efficient thermally activated delayed fluorescence (TADF). A versatile modular design for these boron- and carbazole-embedded PAHs can facilitate the systematic modulation of their photophysical and optoelectronic properties. Organic light-emitting diodes that utilize these PAHs as TADF emitters demonstrate narrowband electroluminescence from blue to red, achieving high maximum external quantum efficiencies of 29.3%, 31.8%, and 22.0% for blue, green, and red, respectively.
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U2 - 10.1021/jacs.0c10081
DO - 10.1021/jacs.0c10081
M3 - Article
C2 - 33151672
AN - SCOPUS:85096356424
SN - 0002-7863
VL - 142
SP - 19468
EP - 19472
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 46
ER -