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

共 80 条

[1] High efficiency single dopant white electrophosphorescent light emitting diodes [J].

Adamovich, V ;

Brooks, J ;

Tamayo, A ;

Alexander, AM ;

Djurovich, PI ;

D'Andrade, BW ;

Adachi, C ;

Forrest, SR ;

Thompson, ME .

NEW JOURNAL OF CHEMISTRY, 2002, 26 (09) :1171-1178

[2]

Baik C., 2010, ANGEW CHEM, V122, P8400

[3] Switching of a Single Boryl Center in π-Conjugated Photochromic Polyboryl Compounds and Its Impact on Fluorescence Quenching [J].

Baik, Chul ;

Murphy, Stephen K. ;

Wang, Suning .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (44) :8224-8227

[4] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[5] Design of efficient thermally activated delayed fluorescence blue host for high performance solution-processed hybrid white organic light emitting diodes [J].

Ban, Xinxin ;

Chen, Feng ;

Liu, Yan ;

Pan, Jie ;

Zhu, Aiyun ;

Jiang, Wei ;

Sun, Yueming .

CHEMICAL SCIENCE, 2019, 10 (10) :3054-3064

[6]

Chan CY, 2021, NAT PHOTONICS, V15, P203, DOI 10.1038/s41566-020-00745-z

[7] Exciton-Stimulated Molecular Transformation in Organic Light-Emitting Diodes [J].

Chang, Yi-Lu ;

Rao, Ying-Li ;

Gong, Shaolong ;

Ingram, Grayson L. ;

Wang, Suning ;

Lu, Zheng-Hong .

ADVANCED MATERIALS, 2014, 26 (39) :6729-6733

[8] Perspective on Host Materials for Thermally Activated Delayed Fluorescence Organic Light Emitting Diodes [J].

Chatterjee, Tanmay ;

Wong, Ken-Tsung .

ADVANCED OPTICAL MATERIALS, 2019, 7 (01)

[9] Over 30 000 h Device Lifetime in Deep Blue Organic Light-Emitting Diodes with y Color Coordinate of 0.086 and Current Efficiency of 37.0 cd A-1 [J].

Chung, Won Jae ;

Lee, Kyung Hyung ;

Jung, Mina ;

Lee, Kang Mun ;

Park, Ho Cheol ;

Eum, Min-Sik ;

Lee, Jun Yeob .

ADVANCED OPTICAL MATERIALS, 2021, 9 (13)

[10] Facile Arylation of Four-Coordinate Boron Halides by Borenium Cation Mediated Boro-desilylation and -destannylation [J].

Crossley, Daniel L. ;

Cid, Jessica ;

Curless, Liam D. ;

Turner, Michael L. ;

Ingleson, Michael J. .

ORGANOMETALLICS, 2015, 34 (24) :5767-5774

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