Spiroborate-Based Host Materials with High Triplet Energies and Ambipolar Charge-Transport Properties

被引：13
作者：
Hayakawa, Masahiro [1 ]
Kameda, Mayu [2 ]
Kawasumi, Ryosuke [3 ]
Nakatsuka, Soichiro [1 ,2 ]
Yasuda, Nobuhiro [4 ]
Hatakeyama, Takuji [1 ,2 ]
机构：
[1] Kyoto Univ, Grad Sch Sci, Dept Chem, Kitashirakawa Oiwake Cho,Sakyo ku, Kyoto 6068502, Japan
[2] Kwansei Gakuin Univ, Dept Chem, Sch Sci & Technol, 1 Gakuen Uegahara, Sanda, Hyogo 6691330, Japan
[3] SK JNC Japan Co Ltd, 5-1 Goi Kaigan, Ichihara, Chiba 2908551, Japan
[4] Japan Synchrotron Radiat Res Inst JASRI, Synchrotron Radiat Res Ctr, 1-1-1 Kouto, Sayocho, Hyogo 6795198, Japan
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 14期
基金：
日本学术振兴会;
关键词：
Ambipolar Charge Transport; High Triplet Energy; Host; Organic Light-Emitting Diodes; Spiroborate; ACTIVATED DELAYED FLUORESCENCE; LIGHT-EMITTING-DIODES; B-N COORDINATION; BORON COMPLEXES; BF2; COMPLEXES; DESIGN; PERFORMANCE; TRANSFORMATION; EMISSION; OLEDS;
D O I：
10.1002/anie.202217512
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Organic light-emitting diodes (OLEDs) receive considerable attention because of their commercial use in flat panel displays. Herein, highly efficient spiroborate-based host materials are reported for use in blue OLEDs. Our designed spiroborates (SBOX) were simple to synthesize and exhibited high triplet excitation energies, narrow S-T gaps, and balanced charge carrier mobilities. A blue OLED containing one of the designed spiroborates, SBON, as a host exhibited a high external quantum efficiency (27.6%) and low turn-on voltage (3.7 V) compared to those observed using 3,3'-di(9H-carbazol-9-yl)-1,1'-biphenyl (17.6% and 4.5 V, respectively), indicating their potential as host materials in OLEDs.
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页数：7
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