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Article: Room-temperature phosphorescence and energy transfer in luminescent multinuclear platinum(II) complexes of branched alkynyls

TitleRoom-temperature phosphorescence and energy transfer in luminescent multinuclear platinum(II) complexes of branched alkynyls
Authors
KeywordsAlkynes
Energy transfer
Luminescence
P ligands
Platinum
Issue Date2005
PublisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/chemistry
Citation
Chemistry - A European Journal, 2005, v. 11 n. 5, p. 1647-1657 How to Cite?
AbstractA series of luminescent branched platinum(II) alkynyl complexes, [1,3,5-{RC≡C(PEt3)2PtC≡C-C6H 4C≡C}3C6H3] (R = C 6H5, C6H4OMe, C6H 4Me, C6H4CF3, C5H 4N, C6H4SAc, 1-napthyl (Np), 1-pyrenyl (Pyr), 1-anthryl-8-ethynyl (HC≡CAn)), [1,3-{PYrC≡C(PEt3) 2PtC≡CC6H4C≡C}2-5-{(iPr) 3SiC≡C}C6H3], and [1,3- {PyrC≡C(PEt3)2PtC≡CC6H 4C≡C}2-5-(HC≡C)-C6H3], was successfully synthesized by using the precursors [1,3,5-{Cl(PEt 3)2PtC≡CC6H4C≡C} 3C6H3] or [1,3-{Cl(PEt3) 2PtC≡CC6H4C≡C}2-5-{(iPr) 3SiC≡C}C6H3]. The X-ray crystal structures of [1,3,5-{MeOC6H4C≡C-(PEt 3)2PtC≡CC6H4C≡C} 3C6H3] and [1,8-{Cl(PEt3) 2PtC≡C}2An] have been determined. These complexes were found to show long-lived emission in both solution and solid-state phases at room temperature. The emission origin of the branched complexes [1,3,5-{RC≡C(PEt3)2PtC≡CC6H 4C≡C}3C6H3] with R = C 6H5, C6H4OMe, C6H 4Me, C6H4CF3, C5H 4N, and C6H4SAc was tentatively assigned to be derived from triplet states of predominantly intra-ligand (IL) character with some mixing of metal-to-ligand charge-transfer (MLCT) (dπ(Pt) →π*(C≡CR)) character, while the emission origin of the branched complexes with polyaromatic alkynyl ligands, [1,3,5-{RC≡C- (PEt3)2PtC≡CC6H4C≡C} 3C6H3] with R = Np, Pyr, or HC≡CAn, [1,3-{PyrC≡C-(PEt3)2PtC≡CC6H 4C≡C}2-5-{(iPr)3SiC≡ C}C 6H3], [1,3-{PyrC≡C(PEt3) 2PtC≡CC6H4C≡C}2-5- (HC≡C)C6H3], and [1,8-{Cl(PEt3) 2PtC≡C}2An], was tentatively assigned to be derived from the predominantly 3IL states of the respective polyaromatic alkynyl ligands, mixed with some 3MLCT (dπ(Pt)→π *(C≡C-R)) character. By incorporating different alkynyl ligands into the periphery of these branched complexes, one could readily tune the nature of the lowest energy emissive state and the direction of the excitation energy transfer. © 2005 Wiley-VCH Verlag GmbH & Co.
Persistent Identifierhttp://hdl.handle.net/10722/69181
ISSN
2015 Impact Factor: 5.771
2015 SCImago Journal Rankings: 2.323
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTao, CHen_HK
dc.contributor.authorZhu, Nen_HK
dc.contributor.authorYam, VWWen_HK
dc.date.accessioned2010-09-06T06:11:18Z-
dc.date.available2010-09-06T06:11:18Z-
dc.date.issued2005en_HK
dc.identifier.citationChemistry - A European Journal, 2005, v. 11 n. 5, p. 1647-1657en_HK
dc.identifier.issn0947-6539en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69181-
dc.description.abstractA series of luminescent branched platinum(II) alkynyl complexes, [1,3,5-{RC≡C(PEt3)2PtC≡C-C6H 4C≡C}3C6H3] (R = C 6H5, C6H4OMe, C6H 4Me, C6H4CF3, C5H 4N, C6H4SAc, 1-napthyl (Np), 1-pyrenyl (Pyr), 1-anthryl-8-ethynyl (HC≡CAn)), [1,3-{PYrC≡C(PEt3) 2PtC≡CC6H4C≡C}2-5-{(iPr) 3SiC≡C}C6H3], and [1,3- {PyrC≡C(PEt3)2PtC≡CC6H 4C≡C}2-5-(HC≡C)-C6H3], was successfully synthesized by using the precursors [1,3,5-{Cl(PEt 3)2PtC≡CC6H4C≡C} 3C6H3] or [1,3-{Cl(PEt3) 2PtC≡CC6H4C≡C}2-5-{(iPr) 3SiC≡C}C6H3]. The X-ray crystal structures of [1,3,5-{MeOC6H4C≡C-(PEt 3)2PtC≡CC6H4C≡C} 3C6H3] and [1,8-{Cl(PEt3) 2PtC≡C}2An] have been determined. These complexes were found to show long-lived emission in both solution and solid-state phases at room temperature. The emission origin of the branched complexes [1,3,5-{RC≡C(PEt3)2PtC≡CC6H 4C≡C}3C6H3] with R = C 6H5, C6H4OMe, C6H 4Me, C6H4CF3, C5H 4N, and C6H4SAc was tentatively assigned to be derived from triplet states of predominantly intra-ligand (IL) character with some mixing of metal-to-ligand charge-transfer (MLCT) (dπ(Pt) →π*(C≡CR)) character, while the emission origin of the branched complexes with polyaromatic alkynyl ligands, [1,3,5-{RC≡C- (PEt3)2PtC≡CC6H4C≡C} 3C6H3] with R = Np, Pyr, or HC≡CAn, [1,3-{PyrC≡C-(PEt3)2PtC≡CC6H 4C≡C}2-5-{(iPr)3SiC≡ C}C 6H3], [1,3-{PyrC≡C(PEt3) 2PtC≡CC6H4C≡C}2-5- (HC≡C)C6H3], and [1,8-{Cl(PEt3) 2PtC≡C}2An], was tentatively assigned to be derived from the predominantly 3IL states of the respective polyaromatic alkynyl ligands, mixed with some 3MLCT (dπ(Pt)→π *(C≡C-R)) character. By incorporating different alkynyl ligands into the periphery of these branched complexes, one could readily tune the nature of the lowest energy emissive state and the direction of the excitation energy transfer. © 2005 Wiley-VCH Verlag GmbH & Co.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/chemistryen_HK
dc.relation.ispartofChemistry - A European Journalen_HK
dc.subjectAlkynesen_HK
dc.subjectEnergy transferen_HK
dc.subjectLuminescenceen_HK
dc.subjectP ligandsen_HK
dc.subjectPlatinumen_HK
dc.titleRoom-temperature phosphorescence and energy transfer in luminescent multinuclear platinum(II) complexes of branched alkynylsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-6539&volume=11&spage=1647&epage=1657&date=2005&atitle=Room-temperature+phosphorescence+and+energy+transfer+in+luminescent+multinuclear+platinum(II)+complexes+of+branched+alkynylsen_HK
dc.identifier.emailZhu, N: nzhu@hkucc.hku.hken_HK
dc.identifier.emailYam, VWW: wwyam@hku.hken_HK
dc.identifier.authorityZhu, N=rp00845en_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/chem.200400888en_HK
dc.identifier.scopuseid_2-s2.0-14844295491en_HK
dc.identifier.hkuros103389en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-14844295491&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume11en_HK
dc.identifier.issue5en_HK
dc.identifier.spage1647en_HK
dc.identifier.epage1657en_HK
dc.identifier.isiWOS:000227262000028-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridTao, CH=7102146421en_HK
dc.identifier.scopusauthoridZhu, N=7201449530en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK

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