期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 25, 页码 7171-7175出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201603232
关键词
carboranes; delayed fluorescence; organic light-emitting diodes; photophysical properties; semiconductors
资金
- JST ACCEL project
- JSPS [15H01049, 25708032, 26620168]
- Ogasawara Foundation for the Promotion of Science and Engineering
- Kurata Memorial Hitachi Science and Technology Foundation
- Kumagai Foundation for Science and Technology
- Sumitomo Electric Group CSR Foundation
- Futaba Electronics Memorial Foundation
- Canon Foundation
- Grants-in-Aid for Scientific Research [26620168, 25708032, 14J03825, 15H01049] Funding Source: KAKEN
Luminescent materials consisting of boron clusters, such as carboranes, have attracted immense interest in recent years. In this study, luminescent organic-inorganic conjugated systems based on o-carboranes directly bonded to electron-donating and electron-accepting p-conjugated units were elaborated as novel optoelectronic materials. These o-carborane derivatives simultaneously possessed aggregation-induced emission (AIE) and thermally activated delayed fluorescence (TADF) capabilities, and showed strong yellow-to-red emissions with high photoluminescence quantum efficiencies of up to 97% in their aggregated states or in solid neat films. Organic light-emitting diodes utilizing these o-carborane derivatives as a nondoped emission layer exhibited maximum external electroluminescence quantum efficiencies as high as 11%, originating from TADF.
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