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- Publisher Website: 10.1002/anie.201903332
- Scopus: eid_2-s2.0-85066823005
- PMID: 31050130
- WOS: WOS:000476691200020
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Article: Four-Coordinate Boron Emitters with Tridentate Chelating Ligand for Efficient and Stable Thermally Activated Delayed Fluorescence Organic Light-Emitting Devices
Title | Four-Coordinate Boron Emitters with Tridentate Chelating Ligand for Efficient and Stable Thermally Activated Delayed Fluorescence Organic Light-Emitting Devices |
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Authors | |
Keywords | four-coordinate boron operational stability organic light-emitting diodes thermally activated delayed fluorescence tridentate ligand |
Issue Date | 2019 |
Publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/journal/26737/home |
Citation | Angewandte Chemie (International Edition), 2019, v. 58 n. 27, p. 9088-9094 How to Cite? |
Abstract | A new class of four‐coordinate donor‐acceptor fluoroboron‐containing thermally activated delayed fluorescence (TADF) compounds bearing a tridentate 2,2′‐(pyridine‐2,6‐diyl)diphenolate (dppy) ligand has been successfully designed and synthesized. Upon varying the donor moieties from carbazole to 10H‐spiro[acridine‐9,9′‐fluorene] to 9,9‐dimethyl‐9,10‐dihydroacridine, these boron derivatives exhibit a wide range of emission colors spanning from blue to yellow with a large spectral shift of 2746 cm−1, with high PLQYs of up to 96 % in the doped thin film. Notably, vacuum‐deposited organic light‐emitting devices (OLEDs) made with these boron compounds demonstrate high performances with the best current efficiencies of 55.7 cd A−1, power efficiencies of 58.4 lm W−1 and external quantum efficiencies of 18.0 %. More importantly, long operational stabilities of the green‐emitting OLEDs based on 2 with half‐lifetimes of up to 12 733 hours at an initial luminance of 100 cd m−2 have been realized. This work represents for the first time the design and synthesis of tridentate dppy‐chelating four‐coordinate boron TADF compounds for long operational stabilities, suggesting great promises for the development of stable boron‐containing TADF emitters. |
Persistent Identifier | http://hdl.handle.net/10722/274837 |
ISSN | 2023 Impact Factor: 16.1 2023 SCImago Journal Rankings: 5.300 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | LI, P | - |
dc.contributor.author | Chan, H | - |
dc.contributor.author | Lai, SL | - |
dc.contributor.author | Ng, M | - |
dc.contributor.author | Chan, MY | - |
dc.contributor.author | Yam, VWW | - |
dc.date.accessioned | 2019-09-10T02:29:52Z | - |
dc.date.available | 2019-09-10T02:29:52Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Angewandte Chemie (International Edition), 2019, v. 58 n. 27, p. 9088-9094 | - |
dc.identifier.issn | 1433-7851 | - |
dc.identifier.uri | http://hdl.handle.net/10722/274837 | - |
dc.description.abstract | A new class of four‐coordinate donor‐acceptor fluoroboron‐containing thermally activated delayed fluorescence (TADF) compounds bearing a tridentate 2,2′‐(pyridine‐2,6‐diyl)diphenolate (dppy) ligand has been successfully designed and synthesized. Upon varying the donor moieties from carbazole to 10H‐spiro[acridine‐9,9′‐fluorene] to 9,9‐dimethyl‐9,10‐dihydroacridine, these boron derivatives exhibit a wide range of emission colors spanning from blue to yellow with a large spectral shift of 2746 cm−1, with high PLQYs of up to 96 % in the doped thin film. Notably, vacuum‐deposited organic light‐emitting devices (OLEDs) made with these boron compounds demonstrate high performances with the best current efficiencies of 55.7 cd A−1, power efficiencies of 58.4 lm W−1 and external quantum efficiencies of 18.0 %. More importantly, long operational stabilities of the green‐emitting OLEDs based on 2 with half‐lifetimes of up to 12 733 hours at an initial luminance of 100 cd m−2 have been realized. This work represents for the first time the design and synthesis of tridentate dppy‐chelating four‐coordinate boron TADF compounds for long operational stabilities, suggesting great promises for the development of stable boron‐containing TADF emitters. | - |
dc.language | eng | - |
dc.publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/journal/26737/home | - |
dc.relation.ispartof | Angewandte Chemie (International Edition) | - |
dc.rights | This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.subject | four-coordinate boron | - |
dc.subject | operational stability | - |
dc.subject | organic light-emitting diodes | - |
dc.subject | thermally activated delayed fluorescence | - |
dc.subject | tridentate ligand | - |
dc.title | Four-Coordinate Boron Emitters with Tridentate Chelating Ligand for Efficient and Stable Thermally Activated Delayed Fluorescence Organic Light-Emitting Devices | - |
dc.type | Article | - |
dc.identifier.email | Lai, SL: slllai@hku.hk | - |
dc.identifier.email | Ng, M: mkyng@HKUCC-COM.hku.hk | - |
dc.identifier.email | Chan, MY: chanmym@hku.hk | - |
dc.identifier.email | Yam, VWW: wwyam@hku.hk | - |
dc.identifier.authority | Chan, MY=rp00666 | - |
dc.identifier.authority | Yam, VWW=rp00822 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/anie.201903332 | - |
dc.identifier.pmid | 31050130 | - |
dc.identifier.scopus | eid_2-s2.0-85066823005 | - |
dc.identifier.hkuros | 305121 | - |
dc.identifier.volume | 58 | - |
dc.identifier.issue | 27 | - |
dc.identifier.spage | 9088 | - |
dc.identifier.epage | 9094 | - |
dc.identifier.isi | WOS:000476691200020 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 1433-7851 | - |