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Article: Spectacular luminescent behaviour of tandem terpyridyl platinum (II) acetylide complexes attributed to solvent effect on ordering of excited states, "ion-pair" formation and molecular conformations

TitleSpectacular luminescent behaviour of tandem terpyridyl platinum (II) acetylide complexes attributed to solvent effect on ordering of excited states, "ion-pair" formation and molecular conformations
Authors
KeywordsAcetylides
Chlorinated solvent
Contact ion pairs
DFT calculation
Emission quantum yield
Issue Date2011
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/publishing/journals/sc/About.asp
Citation
Chemical Science, 2011, v. 2 n. 2, p. 221-228 How to Cite?
AbstractA series of oligomeric tandem terpyridyl platinum(II) complexes, namely [(tBu3tpy)Pt(C≡Ctpy)PtCl](OTf)2 (3), [(tBu3tpy)Pt(C≡Ctpy)PtC≡CtBu](OTf)2 (4), [(tBu3tpy)Pt(C≡Ctpy)PtC≡Ctpy](OTf)2 (5), and [(tBu3tpy)Pt(C≡Ctpy)Pt(C≡Ctpy)PtCl](OTf)3 (6), were prepared and their spectroscopic properties and self-aggregating behaviour were examined. In particular, complex 4 exhibits unusually higher emission quantum yield in CH2Cl2 (φ 1/4 0.43) than that in CH3CN (φ < 0.1), which is attributed to the formation of a contact ion pair in chlorinated solvents, such as CHCl3, CH2Cl2 and C6H5Cl. DFT calculations revealed that both intersystem crossing (ISC) and radiative decay of this complex are less effective in CH3CN than in CH2Cl2, thus accounting for the low emission quantum yield in CH3CN. © The Royal Society of Chemistry 2011.
Persistent Identifierhttp://hdl.handle.net/10722/134372
ISSN
2015 Impact Factor: 9.144
2015 SCImago Journal Rankings: 4.974
ISI Accession Number ID
Funding AgencyGrant Number
Innovation and Technology Commission of the HKSAR GovernmentITF/016/08NP
University Grants Committee of the Hong Kong SARAoE/P-03/08
Research Grants Council of Hong Kong SARHKU 7008/09P
National Natural Science Foundation of China/Research Grants Council Joint Research SchemeN_HKU 752/08
Chinese Academy of Sciences-Croucher Foundation
University of Hong Kong
200807176030
Funding Information:

We gratefully acknowledge financial support from the Innovation and Technology Commission of the HKSAR Government (ITF/016/08NP), the University Grants Committee of the Hong Kong SAR (AoE/P-03/08), Research Grants Council of Hong Kong SAR (HKU 7008/09P), National Natural Science Foundation of China/Research Grants Council Joint Research Scheme [N_HKU 752/08] and The Chinese Academy of Sciences-Croucher Foundation Funding Scheme For Joint Laboratories. Dr S. C. F. Kui acknowledges the small project funding (200807176030) and the post-doctoral fellow scholarship from The University of Hong Kong.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorKui, SCFen_HK
dc.contributor.authorLaw, YCen_HK
dc.contributor.authorTong, GSMen_HK
dc.contributor.authorLu, Wen_HK
dc.contributor.authorYuen, MYen_HK
dc.contributor.authorChe, CMen_HK
dc.date.accessioned2011-06-17T09:18:44Z-
dc.date.available2011-06-17T09:18:44Z-
dc.date.issued2011en_HK
dc.identifier.citationChemical Science, 2011, v. 2 n. 2, p. 221-228en_HK
dc.identifier.issn2041-6520en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134372-
dc.description.abstractA series of oligomeric tandem terpyridyl platinum(II) complexes, namely [(tBu3tpy)Pt(C≡Ctpy)PtCl](OTf)2 (3), [(tBu3tpy)Pt(C≡Ctpy)PtC≡CtBu](OTf)2 (4), [(tBu3tpy)Pt(C≡Ctpy)PtC≡Ctpy](OTf)2 (5), and [(tBu3tpy)Pt(C≡Ctpy)Pt(C≡Ctpy)PtCl](OTf)3 (6), were prepared and their spectroscopic properties and self-aggregating behaviour were examined. In particular, complex 4 exhibits unusually higher emission quantum yield in CH2Cl2 (φ 1/4 0.43) than that in CH3CN (φ < 0.1), which is attributed to the formation of a contact ion pair in chlorinated solvents, such as CHCl3, CH2Cl2 and C6H5Cl. DFT calculations revealed that both intersystem crossing (ISC) and radiative decay of this complex are less effective in CH3CN than in CH2Cl2, thus accounting for the low emission quantum yield in CH3CN. © The Royal Society of Chemistry 2011.en_HK
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/publishing/journals/sc/About.aspen_HK
dc.relation.ispartofChemical Scienceen_HK
dc.subjectAcetylides-
dc.subjectChlorinated solvent-
dc.subjectContact ion pairs-
dc.subjectDFT calculation-
dc.subjectEmission quantum yield-
dc.titleSpectacular luminescent behaviour of tandem terpyridyl platinum (II) acetylide complexes attributed to solvent effect on ordering of excited states, "ion-pair" formation and molecular conformationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=2041-6520&volume=2&spage=221&epage=228&date=2011&atitle=Spectacular+luminescent+behaviour+of+tandem+terpyridyl+platinum+(II)+acetylide+complexes+attributed+to+solvent+effect+on+ordering+of+excited+states,+%27ion-pair%27+formation+and+molecular+conformations-
dc.identifier.emailKui, SCF:stevenku@hku.hken_HK
dc.identifier.emailTong, GSM:tongsm@hkucc.hku.hken_HK
dc.identifier.emailLu, W:luwei@hku.hken_HK
dc.identifier.emailChe, CM:cmche@hku.hken_HK
dc.identifier.authorityKui, SCF=rp00715en_HK
dc.identifier.authorityTong, GSM=rp00790en_HK
dc.identifier.authorityLu, W=rp00754en_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/c0sc00427hen_HK
dc.identifier.scopuseid_2-s2.0-79955624752en_HK
dc.identifier.hkuros185781en_US
dc.identifier.hkuros233333-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79955624752&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume2en_HK
dc.identifier.issue2en_HK
dc.identifier.spage221en_HK
dc.identifier.epage228en_HK
dc.identifier.isiWOS:000286327600005-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectSelf-assembled metal coordination polymers and supramolecular systems containing π-conjugated organic ligands-
dc.relation.projectInstitute of Molecular Functional Materials-
dc.identifier.scopusauthoridKui, SCF=6506763660en_HK
dc.identifier.scopusauthoridLaw, YC=14042155800en_HK
dc.identifier.scopusauthoridTong, GSM=7102328656en_HK
dc.identifier.scopusauthoridLu, W=27868087600en_HK
dc.identifier.scopusauthoridYuen, MY=25931928700en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK

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