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Article: Deciphering Photoluminescence Dynamics and Reactivity of the Luminescent Metal-Metal-Bonded Excited State of a Binuclear Gold(I) Phosphine Complex Containing Open Coordination Sites

TitleDeciphering Photoluminescence Dynamics and Reactivity of the Luminescent Metal-Metal-Bonded Excited State of a Binuclear Gold(I) Phosphine Complex Containing Open Coordination Sites
Authors
Keywordsfemtosecond time-resolved fluorescence
transient absorption
photocleavage
substrate binding
gold
Issue Date2015
Citation
Chemistry - A European Journal, 2015, v. 21, n. 40, p. 13888-13893 How to Cite?
Abstract© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Luminescent metal complexes having open coordination sites hold promise in the design of sensory materials and photocatalysts. As a prototype example, [Au2(dcpm)2)]2+ (dcpm = bis(dicyclohexylphosphanyl) is known for its intriguing environmental sensitive photoluminescence. By integrating a range of complementary ultrafast time-resolved spectroscopy to interrogate the excited state dynamics, this study uncovers that the events occurring in extremely rapid timescales and which are modulated strongly by environmental conditions play a pivotal role in the luminescence behavior and photochemical outcomes. Formed independent of the phase and solvent property within 0.15 ps, the metal-metal bonded 35dσ6pσ state is highly reactive possessing strong propensity toward increasing coordination number at AuI center, and with 510 ps lifetime in dichloromethane is able to mediate light induced C-X bond cleavage.
Persistent Identifierhttp://hdl.handle.net/10722/256735
ISSN
2023 Impact Factor: 3.9
2023 SCImago Journal Rankings: 1.058
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMa, Chensheng-
dc.contributor.authorChan, Chris Tsz Leung-
dc.contributor.authorTo, Wai Pong-
dc.contributor.authorKwok, Wai Ming-
dc.contributor.authorChe, Chi Ming-
dc.date.accessioned2018-07-24T08:57:45Z-
dc.date.available2018-07-24T08:57:45Z-
dc.date.issued2015-
dc.identifier.citationChemistry - A European Journal, 2015, v. 21, n. 40, p. 13888-13893-
dc.identifier.issn0947-6539-
dc.identifier.urihttp://hdl.handle.net/10722/256735-
dc.description.abstract© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Luminescent metal complexes having open coordination sites hold promise in the design of sensory materials and photocatalysts. As a prototype example, [Au<inf>2</inf>(dcpm)<inf>2</inf>)]<sup>2+</sup> (dcpm = bis(dicyclohexylphosphanyl) is known for its intriguing environmental sensitive photoluminescence. By integrating a range of complementary ultrafast time-resolved spectroscopy to interrogate the excited state dynamics, this study uncovers that the events occurring in extremely rapid timescales and which are modulated strongly by environmental conditions play a pivotal role in the luminescence behavior and photochemical outcomes. Formed independent of the phase and solvent property within 0.15 ps, the metal-metal bonded <sup>3</sup>5dσ6pσ state is highly reactive possessing strong propensity toward increasing coordination number at Au<sup>I</sup> center, and with 510 ps lifetime in dichloromethane is able to mediate light induced C-X bond cleavage.-
dc.languageeng-
dc.relation.ispartofChemistry - A European Journal-
dc.subjectfemtosecond time-resolved fluorescence-
dc.subjecttransient absorption-
dc.subjectphotocleavage-
dc.subjectsubstrate binding-
dc.subjectgold-
dc.titleDeciphering Photoluminescence Dynamics and Reactivity of the Luminescent Metal-Metal-Bonded Excited State of a Binuclear Gold(I) Phosphine Complex Containing Open Coordination Sites-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/chem.201503045-
dc.identifier.scopuseid_2-s2.0-84941751255-
dc.identifier.hkuros252958-
dc.identifier.volume21-
dc.identifier.issue40-
dc.identifier.spage13888-
dc.identifier.epage13893-
dc.identifier.eissn1521-3765-
dc.identifier.isiWOS:000363331200005-
dc.identifier.issnl0947-6539-

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