File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Realization of Long Operational Lifetimes in Vacuum-Deposited Organic Light-Emitting Devices Based on para-Substituted Pyridine Carbazolylgold(III) C^C^N Complexes

TitleRealization of Long Operational Lifetimes in Vacuum-Deposited Organic Light-Emitting Devices Based on <i>para</i>-Substituted Pyridine Carbazolylgold(III) C^C^N Complexes
Authors
Issue Date12-Jan-2023
PublisherAmerican Chemical Society
Citation
Journal of the American Chemical Society, 2023, v. 145, n. 4, p. 2638-2646 How to Cite?
Abstract

A new series of robust C^C^N carbazolylgold(III) complexes is designed and synthesized through the introduction of inert and sterically bulky oligophenyl substituents on the pyridyl moiety of the cyclometalating ligand. High photoluminescence quantum yields of up to 96% are recorded with these complexes doped in solid-state thin films, and short excited-state lifetimes of 0.3 μs or less in the solid state at room temperature are found. Promising electroluminescence (EL) performances are shown by the vacuum-deposited organic light-emitting devices (OLEDs) based on this series of gold(III) complexes. High external quantum efficiencies of up to 19.5% with efficiency roll-offs of down to 10% at a practical luminance brightness level of 1000 cd m are achieved. More importantly, record-long operational lifetimes (LT) of up to 470,700 h at 100 cd m are realized, which is currently the highest value among all classes of gold(III) complexes with tridentate pincer ligands. Particularly, by introducing a sterically bulky terphenyl moiety on the reactive site of the pyridine ring, the LT value is shown to attain ∼7 times longer half-lifetime than that based on the unsubstituted complex. These unprecedented EL performances and the simple synthetic route in a mercury-free fashion make them promising emitting materials for practical OLEDs toward commercialization.


Persistent Identifierhttp://hdl.handle.net/10722/331572
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWong, CY-
dc.contributor.authorLai, SL-
dc.contributor.authorLeung, MY-
dc.contributor.authorTang, MC-
dc.contributor.authorLi, LK-
dc.contributor.authorChan, MY-
dc.contributor.authorYam, VWW-
dc.date.accessioned2023-09-21T06:57:01Z-
dc.date.available2023-09-21T06:57:01Z-
dc.date.issued2023-01-12-
dc.identifier.citationJournal of the American Chemical Society, 2023, v. 145, n. 4, p. 2638-2646-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/331572-
dc.description.abstract<p>A new series of robust C^C^N carbazolylgold(III) complexes is designed and synthesized through the introduction of inert and sterically bulky oligophenyl substituents on the pyridyl moiety of the cyclometalating ligand. High photoluminescence quantum yields of up to 96% are recorded with these complexes doped in solid-state thin films, and short excited-state lifetimes of 0.3 μs or less in the solid state at room temperature are found. Promising electroluminescence (EL) performances are shown by the vacuum-deposited organic light-emitting devices (OLEDs) based on this series of gold(III) complexes. High external quantum efficiencies of up to 19.5% with efficiency roll-offs of down to 10% at a practical luminance brightness level of 1000 cd m<sup/> are achieved. More importantly, record-long operational lifetimes (LT<inf/>) of up to 470,700 h at 100 cd m<sup/> are realized, which is currently the highest value among all classes of gold(III) complexes with tridentate pincer ligands. Particularly, by introducing a sterically bulky terphenyl moiety on the reactive site of the pyridine ring, the LT<inf/> value is shown to attain ∼7 times longer half-lifetime than that based on the unsubstituted complex. These unprecedented EL performances and the simple synthetic route in a mercury-free fashion make them promising emitting materials for practical OLEDs toward commercialization.</p>-
dc.languageeng-
dc.publisherAmerican Chemical Society-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titleRealization of Long Operational Lifetimes in Vacuum-Deposited Organic Light-Emitting Devices Based on <i>para</i>-Substituted Pyridine Carbazolylgold(III) C^C^N Complexes-
dc.typeArticle-
dc.identifier.doi10.1021/jacs.2c12674-
dc.identifier.scopuseid_2-s2.0-85146323824-
dc.identifier.volume145-
dc.identifier.issue4-
dc.identifier.spage2638-
dc.identifier.epage2646-
dc.identifier.eissn1520-5126-
dc.identifier.isiWOS:000918823400001-
dc.identifier.issnl0002-7863-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats