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- PMID: 15198612
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Article: Structural and spectroscopic studies on Pt⋯Pt and π-π interactions in luminescent multinuclear cyclometalated platinum(II) homologues tethered by oligophosphine auxiliaries
Title | Structural and spectroscopic studies on Pt⋯Pt and π-π interactions in luminescent multinuclear cyclometalated platinum(II) homologues tethered by oligophosphine auxiliaries |
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Authors | |
Issue Date | 2004 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html |
Citation | Journal Of The American Chemical Society, 2004, v. 126 n. 24, p. 7639-7651 How to Cite? |
Abstract | The synthesis and structural, spectroscopic, and electrochemical properties of a series of trinuclear tridentate cyclometalated platinum(II) complexes tethered by bis(diphenylphosphinomethyl)phenylphosphine (dpmp) have been studied and compared with their mono- and binuclear homologues and a propeller-like congener. The X-ray crystal structures of several derivatives show the presence of a variety of intramolecular Pt⋯Pt, π-π, and C-H⋯O(crown ether) and intermolecular π-π interactions. The trinuclear complexes display strong absorption in the 400-600 nm region and show intense red to near-infrared phosphorescence with microsecond lifetimes in fluid and glassy solutions and in the solid state. These emissions are generally assigned as 3MMLCT [dσ*→π*(C/N/N)] in nature. The close similarities between the emission energies in acetonitrile solution and in the solid state at 298 K indicate that comparable Pt⋯Pt and π-π configurations are maintained in both media, and hence a relationship between the photophysical behavior of these lumophores and their solid-state structural features is proposed. The tendencies of the absorption and emission energies to red-shift from mono- to linearly tethered bi- and trinuclear Pt(II) species are evident. A light-emitting electrochemical cell using a trinuclear Pt(II) derivative as emitter has been demonstrated. |
Persistent Identifier | http://hdl.handle.net/10722/167983 |
ISSN | 2023 Impact Factor: 14.4 2023 SCImago Journal Rankings: 5.489 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Lu, W | en_HK |
dc.contributor.author | Chan, MCW | en_HK |
dc.contributor.author | Zhu, N | en_HK |
dc.contributor.author | Che, CM | en_HK |
dc.contributor.author | Li, C | en_HK |
dc.contributor.author | Hui, Z | en_HK |
dc.date.accessioned | 2012-10-08T03:13:44Z | - |
dc.date.available | 2012-10-08T03:13:44Z | - |
dc.date.issued | 2004 | en_HK |
dc.identifier.citation | Journal Of The American Chemical Society, 2004, v. 126 n. 24, p. 7639-7651 | en_HK |
dc.identifier.issn | 0002-7863 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/167983 | - |
dc.description.abstract | The synthesis and structural, spectroscopic, and electrochemical properties of a series of trinuclear tridentate cyclometalated platinum(II) complexes tethered by bis(diphenylphosphinomethyl)phenylphosphine (dpmp) have been studied and compared with their mono- and binuclear homologues and a propeller-like congener. The X-ray crystal structures of several derivatives show the presence of a variety of intramolecular Pt⋯Pt, π-π, and C-H⋯O(crown ether) and intermolecular π-π interactions. The trinuclear complexes display strong absorption in the 400-600 nm region and show intense red to near-infrared phosphorescence with microsecond lifetimes in fluid and glassy solutions and in the solid state. These emissions are generally assigned as 3MMLCT [dσ*→π*(C/N/N)] in nature. The close similarities between the emission energies in acetonitrile solution and in the solid state at 298 K indicate that comparable Pt⋯Pt and π-π configurations are maintained in both media, and hence a relationship between the photophysical behavior of these lumophores and their solid-state structural features is proposed. The tendencies of the absorption and emission energies to red-shift from mono- to linearly tethered bi- and trinuclear Pt(II) species are evident. A light-emitting electrochemical cell using a trinuclear Pt(II) derivative as emitter has been demonstrated. | en_HK |
dc.language | eng | en_US |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html | en_HK |
dc.relation.ispartof | Journal of the American Chemical Society | en_HK |
dc.title | Structural and spectroscopic studies on Pt⋯Pt and π-π interactions in luminescent multinuclear cyclometalated platinum(II) homologues tethered by oligophosphine auxiliaries | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Zhu, N: nzhu@hkucc.hku.hk | en_HK |
dc.identifier.email | Che, CM: cmche@hku.hk | en_HK |
dc.identifier.authority | Zhu, N=rp00845 | en_HK |
dc.identifier.authority | Che, CM=rp00670 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1021/ja039727o | en_HK |
dc.identifier.pmid | 15198612 | - |
dc.identifier.scopus | eid_2-s2.0-2942654601 | en_HK |
dc.identifier.hkuros | 94150 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-2942654601&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 126 | en_HK |
dc.identifier.issue | 24 | en_HK |
dc.identifier.spage | 7639 | en_HK |
dc.identifier.epage | 7651 | en_HK |
dc.identifier.isi | WOS:000222120900045 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Lu, W=55277832700 | en_HK |
dc.identifier.scopusauthorid | Chan, MCW=7402598116 | en_HK |
dc.identifier.scopusauthorid | Zhu, N=7201449530 | en_HK |
dc.identifier.scopusauthorid | Che, CM=7102442791 | en_HK |
dc.identifier.scopusauthorid | Li, C=8570971400 | en_HK |
dc.identifier.scopusauthorid | Hui, Z=7005565139 | en_HK |
dc.identifier.issnl | 0002-7863 | - |