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.

引用

页数：7

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