DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shin, CH | ko |
dc.contributor.author | Huh, JO | ko |
dc.contributor.author | Baek, SJ | ko |
dc.contributor.author | Kim, SK | ko |
dc.contributor.author | Lee, MH | ko |
dc.contributor.author | Do, Youngkyu | ko |
dc.date.accessioned | 2013-03-11T01:41:40Z | - |
dc.date.available | 2013-03-11T01:41:40Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2010-08 | - |
dc.identifier.citation | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, no.23, pp.3642 - 3651 | - |
dc.identifier.issn | 1434-1948 | - |
dc.identifier.uri | http://hdl.handle.net/10203/97948 | - |
dc.description.abstract | Novel iridium(III)/iridium(III) and indium(III)/platinum(II) di-nuclear complexes, [{Ir(ppyFF)(2)}(2)(mu(2)-L)] (4) and [{Ir(ppyFF)(2)]-{mu(2)-L){Pt(ppy)}] (5) [ppyFF = 2-(2,4-difluorophenyl)pyridine, ppy = 2-phenylpyridine, L = 1,3-bis(3-phenyl-3-oxopropanoyl)benzene], linked by an L bridging ligand were prepared, and their photophysical properties were investigated in solution and in the solid state The photophysical properties of mononuclear iridium(III) and platinum(II) complexes, [Ir(ppyFF)(2)(dbm)] (1) and [Pt(ppy)(dbm)] (2) bearing a dibenzoylmethane (dbm) ligand were also compared Whereas the UV/Vis absorption spectra of 4 and 5 show independent light absorption at each metal-centered moiety, the photoluminescence spectra of 4 and 5 display almost identical features, but very weak emissions in solution at both room temperature and 77 K The weak emission in solution is found to mainly originate from a (3)LX state of the L bridging ligand, which reflects the occurrence of efficient energy convergence from the triplet states of the Pt(ppy) and Ir(ppyFF) moieties to the (3)LX state of L. By contrast, intense orange-red emission, that is, aggregation-induced emission, is produced in the solid state of 4 and 5 Inspection of the crystal-packing structures of 5 reveals that strong intermolecular pi-pi interactions between the adjacent pyridine rings of ppyFF ligands in the Ir-centered moieties are responsible for the emissive metal-to-ligand ligand charge-transfer [(3)M(LL)CT] state of the solid-state dinuclear systems The electrochemical properties of 4 and 5 further indicate that the first two reductions occur at the dbm moieties of the L bridging ligand linked to each metal center, which is consistent with the fact that the lowest-energy excited state of the L bridging ligand dominates the excited-state properties of 4 and 5 in solution | - |
dc.language | English | - |
dc.publisher | WILEY-BLACKWELL | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | SOLVENT-INDUCED AGGREGATION | - |
dc.subject | ELECTROPHOSPHORESCENT DEVICES | - |
dc.subject | ELECTROLUMINESCENT MATERIALS | - |
dc.subject | LUMINESCENCE PROPERTIES | - |
dc.subject | PLATINUM(II) COMPLEXES | - |
dc.subject | COORDINATION-COMPOUNDS | - |
dc.subject | TERPYRIDYL COMPLEXES | - |
dc.subject | LANTHANIDE COMPLEXES | - |
dc.subject | QUANTUM EFFICIENCY | - |
dc.title | Dinuclear Iridium(III) Complexes Linked by a Bis(beta-diketonato) Bridging Ligand: Energy Convergence versus Aggregation-Induced Emission | - |
dc.type | Article | - |
dc.identifier.wosid | 000281533600012 | - |
dc.identifier.scopusid | 2-s2.0-77955946431 | - |
dc.type.rims | ART | - |
dc.citation.issue | 23 | - |
dc.citation.beginningpage | 3642 | - |
dc.citation.endingpage | 3651 | - |
dc.citation.publicationname | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | - |
dc.identifier.doi | 10.1002/ejic.201000275 | - |
dc.contributor.localauthor | Do, Youngkyu | - |
dc.contributor.nonIdAuthor | Baek, SJ | - |
dc.contributor.nonIdAuthor | Lee, MH | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Aggregation | - |
dc.subject.keywordAuthor | Dimetallic complexes | - |
dc.subject.keywordAuthor | Phosphorescence | - |
dc.subject.keywordAuthor | Iridium | - |
dc.subject.keywordAuthor | Platinum | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | SOLVENT-INDUCED AGGREGATION | - |
dc.subject.keywordPlus | ELECTROPHOSPHORESCENT DEVICES | - |
dc.subject.keywordPlus | ELECTROLUMINESCENT MATERIALS | - |
dc.subject.keywordPlus | LUMINESCENCE PROPERTIES | - |
dc.subject.keywordPlus | PLATINUM(II) COMPLEXES | - |
dc.subject.keywordPlus | COORDINATION-COMPOUNDS | - |
dc.subject.keywordPlus | TERPYRIDYL COMPLEXES | - |
dc.subject.keywordPlus | LANTHANIDE COMPLEXES | - |
dc.subject.keywordPlus | QUANTUM EFFICIENCY | - |
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