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- PMID: 31943594
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Article: Tetradentate Gold(III) Complexes as Thermally Activated Delayed Fluorescence (TADF) Emitters: Microwave‐Assisted Synthesis and High‐Performance OLEDs with Long Operational Lifetime
Title | Tetradentate Gold(III) Complexes as Thermally Activated Delayed Fluorescence (TADF) Emitters: Microwave‐Assisted Synthesis and High‐Performance OLEDs with Long Operational Lifetime |
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Authors | |
Keywords | gold microwave synthesis OLEDs thermally activated delayed fluorescence (TADF) tetradentate ligands |
Issue Date | 2020 |
Publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at https://onlinelibrary.wiley.com/journal/15213773 |
Citation | Angewandte Chemie (International Edition), 2020, v. 59 n. 16, p. 6375-6382 How to Cite? |
Abstract | Structurally robust tetradentate gold(III)‐emitters have potent material applications but are rare and unprecedented for those displaying thermally activated delayed fluorescence (TADF). Herein, a novel synthetic route leading to the preparation of highly emissive, charge‐neutral tetradentate [C^C^N^C] gold(III) complexes with 5‐5‐6‐membered chelate rings has been developed through microwave‐assisted C−H bond activation. These complexes show high thermal stability and with emission origin (3IL, 3ILCT, and TADF) tuned by varying the substituents of the C^C^N^C ligand. With phenoxazine/diphenylamine substituent, we prepared the first tetradentate gold(III) complexes that are TADF emitters with emission quantum yields of up to 94 % and emission lifetimes of down to 0.62 μs in deoxygenated toluene. These tetradentate AuIII TADF emitters showed good performance in vacuum‐deposited OLEDs with maximum EQEs of up to 25 % and LT95 of up to 5280 h at 100 cd m−2. |
Persistent Identifier | http://hdl.handle.net/10722/282890 |
ISSN | 2021 Impact Factor: 16.823 2020 SCImago Journal Rankings: 5.831 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhou, D | - |
dc.contributor.author | To, WP | - |
dc.contributor.author | Tong, GSM | - |
dc.contributor.author | Cheng, G | - |
dc.contributor.author | Du, L | - |
dc.contributor.author | Phillips, DL | - |
dc.contributor.author | Che, CM | - |
dc.date.accessioned | 2020-06-05T06:22:46Z | - |
dc.date.available | 2020-06-05T06:22:46Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Angewandte Chemie (International Edition), 2020, v. 59 n. 16, p. 6375-6382 | - |
dc.identifier.issn | 1433-7851 | - |
dc.identifier.uri | http://hdl.handle.net/10722/282890 | - |
dc.description.abstract | Structurally robust tetradentate gold(III)‐emitters have potent material applications but are rare and unprecedented for those displaying thermally activated delayed fluorescence (TADF). Herein, a novel synthetic route leading to the preparation of highly emissive, charge‐neutral tetradentate [C^C^N^C] gold(III) complexes with 5‐5‐6‐membered chelate rings has been developed through microwave‐assisted C−H bond activation. These complexes show high thermal stability and with emission origin (3IL, 3ILCT, and TADF) tuned by varying the substituents of the C^C^N^C ligand. With phenoxazine/diphenylamine substituent, we prepared the first tetradentate gold(III) complexes that are TADF emitters with emission quantum yields of up to 94 % and emission lifetimes of down to 0.62 μs in deoxygenated toluene. These tetradentate AuIII TADF emitters showed good performance in vacuum‐deposited OLEDs with maximum EQEs of up to 25 % and LT95 of up to 5280 h at 100 cd m−2. | - |
dc.language | eng | - |
dc.publisher | Wiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at https://onlinelibrary.wiley.com/journal/15213773 | - |
dc.relation.ispartof | Angewandte Chemie (International Edition) | - |
dc.rights | This is the peer reviewed version of the following article: Angewandte Chemie (International Edition), 2020, v. 59 n. 16, p. 6375-6382, which has been published in final form at [https://doi.org/10.1002/anie.201914661]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.subject | gold | - |
dc.subject | microwave synthesis | - |
dc.subject | OLEDs | - |
dc.subject | thermally activated delayed fluorescence (TADF) | - |
dc.subject | tetradentate ligands | - |
dc.title | Tetradentate Gold(III) Complexes as Thermally Activated Delayed Fluorescence (TADF) Emitters: Microwave‐Assisted Synthesis and High‐Performance OLEDs with Long Operational Lifetime | - |
dc.type | Article | - |
dc.identifier.email | To, WP: kevintwp@hku.hk | - |
dc.identifier.email | Tong, GSM: tongsm@hku.hk | - |
dc.identifier.email | Cheng, G: ggcheng@hku.hk | - |
dc.identifier.email | Du, L: ailleen@hku.hk | - |
dc.identifier.email | Phillips, DL: phillips@hku.hk | - |
dc.identifier.email | Che, CM: chemhead@hku.hk | - |
dc.identifier.authority | To, WP=rp02410 | - |
dc.identifier.authority | Tong, GSM=rp00790 | - |
dc.identifier.authority | Cheng, G=rp02145 | - |
dc.identifier.authority | Phillips, DL=rp00770 | - |
dc.identifier.authority | Che, CM=rp00670 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1002/anie.201914661 | - |
dc.identifier.pmid | 31943594 | - |
dc.identifier.scopus | eid_2-s2.0-85079457072 | - |
dc.identifier.hkuros | 310317 | - |
dc.identifier.volume | 59 | - |
dc.identifier.issue | 16 | - |
dc.identifier.spage | 6375 | - |
dc.identifier.epage | 6382 | - |
dc.identifier.isi | WOS:000512476000001 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 1433-7851 | - |