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Article: Structures and solvatochromic phosphorescence of dicationic terpyridyl-platinum(II) complexes with foldable oligo(ortho-phenyleneethynylene) bridging ligands

TitleStructures and solvatochromic phosphorescence of dicationic terpyridyl-platinum(II) complexes with foldable oligo(ortho-phenyleneethynylene) bridging ligands
Authors
KeywordsAggregation
Hydrophobic effect
Luminescence
Phenyleneethynylene
Platinum
Issue Date2008
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, 2008, v. 14 n. 31, p. 9736-9746 How to Cite?
AbstractA series of binuclear organoplatinum(II) complexes, [(tBu 3tpy)Pt-(C≡C-1,2-C 6H 4) n-C≡C-Pt(tBu 3tpy)]-[ClO 4] 2 (1-7, n = 1, 2, 3, 4, 5, 6, 8; tBu 3tpy = 4,4′,4″-tri- tert-butyl-2,2′:6′,2″-terpyridine) with foldable oligo(orthophenyleneethynylene) linkers were prepared and characterized by spectroscopic methods and/or X-ray crystallographic analyses. In the crystal structures of 3·2.5 CH 3OH, 5·CH 3CN, and 6·4CH 3CN, each of the bridging orthophenyleneethynylene ligands has a partially folded conformation. In aerated water/acetonitrile mixtures with water percentages larger than 40%, the emission of complexes 3-7 are red-shifted and enhanced when compared to those recorded in acetonitrile. The red-shift in emission energy and enhanced emission intensity can be attributed to the inter- and/or intramolecular interactions induced by the addition of water to solutions of the platinum(II) complexes in acetonitrile. Data from dynamic light scattering and transmission electron microscopy studies revealed that these binuclear platinum(II) complexes aggregated into nanosized particles in acetonitrile/water mixtures. Hydrophobic folding of the ortho-phenyleneethynylene linkers in acetonitrile/water mixtures is postulated. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
Persistent Identifierhttp://hdl.handle.net/10722/168340
ISSN
2015 Impact Factor: 5.771
2015 SCImago Journal Rankings: 2.323
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhu, MXen_HK
dc.contributor.authorLu, Wen_HK
dc.contributor.authorZhu, Nen_HK
dc.contributor.authorChe, CMen_HK
dc.date.accessioned2012-10-08T03:17:48Z-
dc.date.available2012-10-08T03:17:48Z-
dc.date.issued2008en_HK
dc.identifier.citationChemistry - A European Journal, 2008, v. 14 n. 31, p. 9736-9746en_HK
dc.identifier.issn0947-6539en_HK
dc.identifier.urihttp://hdl.handle.net/10722/168340-
dc.description.abstractA series of binuclear organoplatinum(II) complexes, [(tBu 3tpy)Pt-(C≡C-1,2-C 6H 4) n-C≡C-Pt(tBu 3tpy)]-[ClO 4] 2 (1-7, n = 1, 2, 3, 4, 5, 6, 8; tBu 3tpy = 4,4′,4″-tri- tert-butyl-2,2′:6′,2″-terpyridine) with foldable oligo(orthophenyleneethynylene) linkers were prepared and characterized by spectroscopic methods and/or X-ray crystallographic analyses. In the crystal structures of 3·2.5 CH 3OH, 5·CH 3CN, and 6·4CH 3CN, each of the bridging orthophenyleneethynylene ligands has a partially folded conformation. In aerated water/acetonitrile mixtures with water percentages larger than 40%, the emission of complexes 3-7 are red-shifted and enhanced when compared to those recorded in acetonitrile. The red-shift in emission energy and enhanced emission intensity can be attributed to the inter- and/or intramolecular interactions induced by the addition of water to solutions of the platinum(II) complexes in acetonitrile. Data from dynamic light scattering and transmission electron microscopy studies revealed that these binuclear platinum(II) complexes aggregated into nanosized particles in acetonitrile/water mixtures. Hydrophobic folding of the ortho-phenyleneethynylene linkers in acetonitrile/water mixtures is postulated. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.en_HK
dc.languageengen_US
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.subjectAggregationen_HK
dc.subjectHydrophobic effecten_HK
dc.subjectLuminescenceen_HK
dc.subjectPhenyleneethynyleneen_HK
dc.subjectPlatinumen_HK
dc.subject.meshAlkynes - Chemistryen_US
dc.subject.meshCations - Chemistryen_US
dc.subject.meshCrystallography, X-Rayen_US
dc.subject.meshEthers - Chemistryen_US
dc.subject.meshLigandsen_US
dc.subject.meshLuminescent Agents - Chemistryen_US
dc.subject.meshLuminescent Measurementsen_US
dc.subject.meshMagnetic Resonance Spectroscopyen_US
dc.subject.meshMicroscopy, Electron, Transmissionen_US
dc.subject.meshModels, Molecularen_US
dc.subject.meshMolecular Structureen_US
dc.subject.meshOrganoplatinum Compounds - Chemistryen_US
dc.subject.meshPhotochemistryen_US
dc.subject.meshPyridines - Chemistryen_US
dc.subject.meshSolvents - Chemistryen_US
dc.subject.meshSpectrophotometryen_US
dc.subject.meshTemperatureen_US
dc.subject.meshWater - Chemistryen_US
dc.titleStructures and solvatochromic phosphorescence of dicationic terpyridyl-platinum(II) complexes with foldable oligo(ortho-phenyleneethynylene) bridging ligandsen_HK
dc.typeArticleen_HK
dc.identifier.emailZhu, N: nzhu@hkucc.hku.hken_HK
dc.identifier.emailChe, CM: cmche@hku.hken_HK
dc.identifier.authorityZhu, N=rp00845en_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/chem.200800394en_HK
dc.identifier.pmid18816539-
dc.identifier.scopuseid_2-s2.0-55049134745en_HK
dc.identifier.hkuros155737-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-55049134745&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume14en_HK
dc.identifier.issue31en_HK
dc.identifier.spage9736en_HK
dc.identifier.epage9746en_HK
dc.identifier.isiWOS:000260896200035-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridZhu, MX=51261522300en_HK
dc.identifier.scopusauthoridLu, W=55277832700en_HK
dc.identifier.scopusauthoridZhu, N=7201449530en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK

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