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dc.contributor.authorGhosh, Biswa Nath
dc.contributor.authorTopic, Filip
dc.contributor.authorSahoo, Prasit Kumar
dc.contributor.authorMal, Prasenjit
dc.contributor.authorLinnera, Jarno
dc.contributor.authorKalenius, Elina
dc.contributor.authorTuononen, Heikki
dc.contributor.authorRissanen, Kari
dc.date.accessioned2015-11-30T09:48:43Z
dc.date.available2015-11-30T09:48:43Z
dc.date.issued2015
dc.identifier.citationGhosh, B. N., Topic, F., Sahoo, P. K., Mal, P., Linnera, J., Kalenius, E., Tuononen, H., & Rissanen, K. (2015). Synthesis, structure and photophysical properties of a highly luminescent terpyridine-diphenylacetylene hybrid fluorophore and its metal complexes. <i>Dalton Transactions</i>, <i>44</i>(1), 254-267. <a href="https://doi.org/10.1039/c4dt02728k" target="_blank">https://doi.org/10.1039/c4dt02728k</a>
dc.identifier.otherCONVID_24060930
dc.identifier.otherTUTKAID_64134
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/47860
dc.description.abstractA new fluorescent terpyridyl-diphenylacetylene hybrid fluorophore 4′-[4-{(4-methoxyphenyl)ethynyl}phenyl]-2,2′:6′,2′′-terpyridine, L, was synthesized via Sonogashira cross-coupling of 4′-(4-bromophenyl)-2,2′:6′,2′′-terpyridine and 4-ethynylanisole in the presence of Pd(PPh3)4/CuI as a catalyst. The solid state structure of L shows a trans arrangement of pyridine nitrogen atoms along the interannular bond in the terpyridine domain. Five transition metal complexes of L, {[FeL2](CF3SO3)2 (1), [ZnL2](ClO4)2 (2), [CdL2](ClO4)2 (3), [RuL2](PF6)2 (4), and PtMe3IL (5)}, have also been synthesized and characterized by spectroscopic methods and single crystal X-ray analysis. The X-ray crystal structures of complexes 1–3 show a distorted octahedral MN6 arrangement with tridentate coordination of the two terpyridine ligands, whereas in complex 5 the ligand L binds in a bidentate fashion. The ligand L displays bright blue emission in the solid state and in both non-polar and polar organic media. The fluorescence quantum yield of L is exceptionally high for a monoterpyridine ligand of its kind, which can be rationalized with density functional theory calculations. The electronic structure of L shows that the fluorescence involves intramolecular charge transfer from the diphenylacetylene moiety to the terpyridine group, and it is not affected by the usual non-radiative relaxation processes such as pyridine rotation. The Fe(II), Ru(II) and Pt(IV) complexes of L were found to be non-emissive, whereas both Zn(II) and Cd(II) complexes displayed significant green emission attributed to intra-ligand charge transfer states. These results were supported by the observed red-shift of the emission maxima of complexes 2 and 3 with increasing the solvent polarity.
dc.language.isoeng
dc.publisherRSC Publications
dc.relation.ispartofseriesDalton Transactions
dc.subject.otherterpyridiini
dc.subject.otherfluoroforit
dc.subject.othermetallikompleksit
dc.subject.otherkiderakenteet
dc.subject.othervalofysikaaliset ominaisuudet
dc.subject.otherterpyridine
dc.subject.otherfluorophore
dc.subject.othermetal complexes
dc.subject.othercrystal structures
dc.subject.otherphotophysical properties
dc.titleSynthesis, structure and photophysical properties of a highly luminescent terpyridine-diphenylacetylene hybrid fluorophore and its metal complexes
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201511253819
dc.contributor.laitosKemian laitosfi
dc.contributor.laitosDepartment of Chemistryen
dc.contributor.oppiaineEpäorgaaninen ja analyyttinen kemiafi
dc.contributor.oppiaineOrgaaninen kemiafi
dc.contributor.oppiaineInorganic and Analytical Chemistryen
dc.contributor.oppiaineOrganic Chemistryen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-11-25T13:15:40Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange254-267
dc.relation.issn1477-9226
dc.relation.numberinseries1
dc.relation.volume44
dc.type.versionacceptedVersion
dc.rights.copyright© The Royal Society of Chemistry 2015. This is a final draft version of an article whose final and definitive form has been published by RSC. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.subject.ysovalmistus
dc.subject.ysosynteesi
jyx.subject.urihttp://www.yso.fi/onto/yso/p8606
jyx.subject.urihttp://www.yso.fi/onto/yso/p8467
dc.relation.doi10.1039/c4dt02728k
dc.type.okmA1


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