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Article: Rational Design Strategy for the Realization of Red- to Near-Infrared-Emitting Alkynylgold(III) Complexes and Their Applications in Solution-Processable Organic Light-Emitting Devices

TitleRational Design Strategy for the Realization of Red- to Near-Infrared-Emitting Alkynylgold(III) Complexes and Their Applications in Solution-Processable Organic Light-Emitting Devices
Authors
KeywordsCurrent density
Electroluminescence
Infrared devices
Light
Light emission
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cm
Citation
Chemistry of Materials, 2019, v. 31 n. 17, p. 6706-6714 How to Cite?
AbstractA new class of red- to near-infrared (NIR)-emitting cyclometalated alkynylgold(III) complexes was designed and synthesized. Red to NIR emission in the alkynylgold(III) complexes was realized, with the emission band maxima of the complexes in both solution and solid-state thin films found to extend to 823 and 730 nm, respectively. A small energy gap of down to 1.51 eV was achieved in the NIR-emitting complexes, as revealed from the electrochemical studies. Moreover, a large bathochromic shift of ∼1370 cm–1 can be obtained by simply changing the alkynyl ligand. NIR-emitting solution-processable organic light-emitting devices (OLEDs) were also realized, as exemplified by the electroluminescence properties with band maximum at 720 nm and Commission International de L’Éclairage coordinates of (0.67, 0.33) for devices based on complex 1b. This work not only demonstrates a design strategy to extend the emission of gold(III) complexes into the NIR regime but also represents the first report on gold(III)-based NIR-emitting OLEDs.
Persistent Identifierhttp://hdl.handle.net/10722/277343
ISSN
2017 Impact Factor: 9.89
2015 SCImago Journal Rankings: 4.232

 

DC FieldValueLanguage
dc.contributor.authorLI, LK-
dc.contributor.authorTang, MC-
dc.contributor.authorCHEUNG, WL-
dc.contributor.authorLai, SL-
dc.contributor.authorNg, M-
dc.contributor.authorChan, CKM-
dc.contributor.authorChan, MY-
dc.contributor.authorYam, VWW-
dc.date.accessioned2019-09-20T08:49:10Z-
dc.date.available2019-09-20T08:49:10Z-
dc.date.issued2019-
dc.identifier.citationChemistry of Materials, 2019, v. 31 n. 17, p. 6706-6714-
dc.identifier.issn0897-4756-
dc.identifier.urihttp://hdl.handle.net/10722/277343-
dc.description.abstractA new class of red- to near-infrared (NIR)-emitting cyclometalated alkynylgold(III) complexes was designed and synthesized. Red to NIR emission in the alkynylgold(III) complexes was realized, with the emission band maxima of the complexes in both solution and solid-state thin films found to extend to 823 and 730 nm, respectively. A small energy gap of down to 1.51 eV was achieved in the NIR-emitting complexes, as revealed from the electrochemical studies. Moreover, a large bathochromic shift of ∼1370 cm–1 can be obtained by simply changing the alkynyl ligand. NIR-emitting solution-processable organic light-emitting devices (OLEDs) were also realized, as exemplified by the electroluminescence properties with band maximum at 720 nm and Commission International de L’Éclairage coordinates of (0.67, 0.33) for devices based on complex 1b. This work not only demonstrates a design strategy to extend the emission of gold(III) complexes into the NIR regime but also represents the first report on gold(III)-based NIR-emitting OLEDs.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/cm-
dc.relation.ispartofChemistry of Materials-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjectCurrent density-
dc.subjectElectroluminescence-
dc.subjectInfrared devices-
dc.subjectLight-
dc.subjectLight emission-
dc.titleRational Design Strategy for the Realization of Red- to Near-Infrared-Emitting Alkynylgold(III) Complexes and Their Applications in Solution-Processable Organic Light-Emitting Devices-
dc.typeArticle-
dc.identifier.emailTang, MC: kobetang@hku.hk-
dc.identifier.emailLai, SL: slllai@hku.hk-
dc.identifier.emailNg, M: mkyng@HKUCC-COM.hku.hk-
dc.identifier.emailChan, MY: chanmym@hku.hk-
dc.identifier.emailYam, VWW: wwyam@hku.hk-
dc.identifier.authorityChan, MY=rp00666-
dc.identifier.authorityYam, VWW=rp00822-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acs.chemmater.9b01208-
dc.identifier.scopuseid_2-s2.0-85066899821-
dc.identifier.hkuros305989-
dc.identifier.volume31-
dc.identifier.issue17-
dc.identifier.spage6706-
dc.identifier.epage6714-
dc.publisher.placeUnited States-

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