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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
| Title | 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 | ||||||||||||||||
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| Authors | |||||||||||||||||
| Keywords | Acetylides Chlorinated solvent Contact ion pairs DFT calculation Emission quantum yield | ||||||||||||||||
| Issue Date | 2011 | ||||||||||||||||
| Publisher | Royal 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? | ||||||||||||||||
| Abstract | A 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 Identifier | http://hdl.handle.net/10722/134372 | ||||||||||||||||
| ISSN | 2023 Impact Factor: 7.6 2023 SCImago Journal Rankings: 2.333 | ||||||||||||||||
| ISI Accession Number ID |
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. | ||||||||||||||||
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| Grants |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Kui, SCF | en_HK |
| dc.contributor.author | Law, YC | en_HK |
| dc.contributor.author | Tong, GSM | en_HK |
| dc.contributor.author | Lu, W | en_HK |
| dc.contributor.author | Yuen, MY | en_HK |
| dc.contributor.author | Che, CM | en_HK |
| dc.date.accessioned | 2011-06-17T09:18:44Z | - |
| dc.date.available | 2011-06-17T09:18:44Z | - |
| dc.date.issued | 2011 | en_HK |
| dc.identifier.citation | Chemical Science, 2011, v. 2 n. 2, p. 221-228 | en_HK |
| dc.identifier.issn | 2041-6520 | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/134372 | - |
| dc.description.abstract | A 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.language | eng | en_US |
| dc.publisher | Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/publishing/journals/sc/About.asp | en_HK |
| dc.relation.ispartof | Chemical Science | en_HK |
| dc.subject | Acetylides | - |
| dc.subject | Chlorinated solvent | - |
| dc.subject | Contact ion pairs | - |
| dc.subject | DFT calculation | - |
| dc.subject | Emission quantum yield | - |
| dc.title | 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 | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.openurl | http://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.email | Kui, SCF:stevenku@hku.hk | en_HK |
| dc.identifier.email | Tong, GSM:tongsm@hkucc.hku.hk | en_HK |
| dc.identifier.email | Lu, W:luwei@hku.hk | en_HK |
| dc.identifier.email | Che, CM:cmche@hku.hk | en_HK |
| dc.identifier.authority | Kui, SCF=rp00715 | en_HK |
| dc.identifier.authority | Tong, GSM=rp00790 | en_HK |
| dc.identifier.authority | Lu, W=rp00754 | en_HK |
| dc.identifier.authority | Che, CM=rp00670 | en_HK |
| dc.description.nature | link_to_subscribed_fulltext | - |
| dc.identifier.doi | 10.1039/c0sc00427h | en_HK |
| dc.identifier.scopus | eid_2-s2.0-79955624752 | en_HK |
| dc.identifier.hkuros | 185781 | en_US |
| dc.identifier.hkuros | 233333 | - |
| dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-79955624752&selection=ref&src=s&origin=recordpage | en_HK |
| dc.identifier.volume | 2 | en_HK |
| dc.identifier.issue | 2 | en_HK |
| dc.identifier.spage | 221 | en_HK |
| dc.identifier.epage | 228 | en_HK |
| dc.identifier.isi | WOS:000286327600005 | - |
| dc.publisher.place | United Kingdom | en_HK |
| dc.relation.project | Self-assembled metal coordination polymers and supramolecular systems containing π-conjugated organic ligands | - |
| dc.relation.project | Institute of Molecular Functional Materials | - |
| dc.identifier.scopusauthorid | Kui, SCF=6506763660 | en_HK |
| dc.identifier.scopusauthorid | Law, YC=14042155800 | en_HK |
| dc.identifier.scopusauthorid | Tong, GSM=7102328656 | en_HK |
| dc.identifier.scopusauthorid | Lu, W=27868087600 | en_HK |
| dc.identifier.scopusauthorid | Yuen, MY=25931928700 | en_HK |
| dc.identifier.scopusauthorid | Che, CM=7102442791 | en_HK |
| dc.identifier.issnl | 2041-6520 | - |