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Article: Luminescent cyclometalated alkynylgold(III) complexes with 6-phenyl-2,2′-bipyridine derivatives: Synthesis, characterization, electrochemistry, photophysics, and computational studies

TitleLuminescent cyclometalated alkynylgold(III) complexes with 6-phenyl-2,2′-bipyridine derivatives: Synthesis, characterization, electrochemistry, photophysics, and computational studies
Authors
Issue Date2012
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ic
Citation
Inorganic Chemistry, 2012, v. 51 n. 14, p. 7537-7545 How to Cite?
AbstractA novel class of luminescent gold(III) complexes containing various tridentate cyclometalating ligands derived from 6-phenyl-2,2′-bipyridine and alkynyl ligands, [Au(RC ̂N ̂N)(C≡C-R')] PF 6, has been successfully synthesized and characterized. One of the complexes has also been determined by X-ray crystallography. Electrochemical studies show a ligand-centered reduction originated from the cyclometalating RC ̂N ̂N ligands as well as an alkynyl-centered oxidation. The electronic absorption and photoluminescence properties of the complexes have also been investigated. In acetonitrile at room temperature, the complexes show intense absorption at higher energy region with wavelength shorter than 320 nm, and a moderately intense broad absorption band at 374-406 nm, assigned as the metal-perturbed intraligand π-π* transition of the cyclometalating RC ̂N ̂N ligand, with some charge transfer character from the aryl ring to the bipyridine moiety. Most of the complexes have been observed to show vibronic-structured emission bands at 469-550 nm in butyronitile glass at 77 K, assigned to an intraligand excited state of the RC ̂N ̂N ligand, with some charge transfer character from the aryl to the bipyridyine moiety. Insights into the origin of the absorption and emission have also been provided by density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations. © 2012 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/168657
ISSN
2015 Impact Factor: 4.82
2015 SCImago Journal Rankings: 1.873
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorAu, VKMen_US
dc.contributor.authorLam, WHen_US
dc.contributor.authorWong, WTen_US
dc.contributor.authorYam, VWWen_US
dc.date.accessioned2012-10-08T03:24:03Z-
dc.date.available2012-10-08T03:24:03Z-
dc.date.issued2012en_US
dc.identifier.citationInorganic Chemistry, 2012, v. 51 n. 14, p. 7537-7545en_US
dc.identifier.issn0020-1669en_US
dc.identifier.urihttp://hdl.handle.net/10722/168657-
dc.description.abstractA novel class of luminescent gold(III) complexes containing various tridentate cyclometalating ligands derived from 6-phenyl-2,2′-bipyridine and alkynyl ligands, [Au(RC ̂N ̂N)(C≡C-R')] PF 6, has been successfully synthesized and characterized. One of the complexes has also been determined by X-ray crystallography. Electrochemical studies show a ligand-centered reduction originated from the cyclometalating RC ̂N ̂N ligands as well as an alkynyl-centered oxidation. The electronic absorption and photoluminescence properties of the complexes have also been investigated. In acetonitrile at room temperature, the complexes show intense absorption at higher energy region with wavelength shorter than 320 nm, and a moderately intense broad absorption band at 374-406 nm, assigned as the metal-perturbed intraligand π-π* transition of the cyclometalating RC ̂N ̂N ligand, with some charge transfer character from the aryl ring to the bipyridine moiety. Most of the complexes have been observed to show vibronic-structured emission bands at 469-550 nm in butyronitile glass at 77 K, assigned to an intraligand excited state of the RC ̂N ̂N ligand, with some charge transfer character from the aryl to the bipyridyine moiety. Insights into the origin of the absorption and emission have also been provided by density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations. © 2012 American Chemical Society.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/icen_US
dc.relation.ispartofInorganic Chemistryen_US
dc.titleLuminescent cyclometalated alkynylgold(III) complexes with 6-phenyl-2,2′-bipyridine derivatives: Synthesis, characterization, electrochemistry, photophysics, and computational studiesen_US
dc.typeArticleen_US
dc.identifier.emailLam, WH:chsue@hku.hken_US
dc.identifier.emailYam, VWW:wwyam@hku.hken_US
dc.identifier.authorityLam, WH=rp00719en_US
dc.identifier.authorityYam, VWW=rp00822en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/ic300140wen_US
dc.identifier.pmid22731665-
dc.identifier.scopuseid_2-s2.0-84863922965en_US
dc.identifier.hkuros219076-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84863922965&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume51en_US
dc.identifier.issue14en_US
dc.identifier.spage7537en_US
dc.identifier.epage7545en_US
dc.identifier.isiWOS:000306381800021-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridAu, VKM=26421974800en_US
dc.identifier.scopusauthoridLam, WH=26642862800en_US
dc.identifier.scopusauthoridWong, WT=35932584500en_US
dc.identifier.scopusauthoridYam, VWW=18539304700en_US

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