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Divergent route to the preparation of hybrid Pt–Fe 2,4,6-Tris(4-ethynyl)phenyl-1,3,5-triazine metallodendrimers for nonlinear optics

2013Journal article Restricted access
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dc.contributor.authorMaiti, Swarup K.
dc.contributor.authorJardim, Manuel G.
dc.contributor.authorRodrigues, João
dc.contributor.authorRissanen, Kari
dc.contributor.authorCampo, Jochen
dc.contributor.authorWenseleers, Wim
dc.date.accessioned2019-06-19T16:06:22Z
dc.date.available2019-06-19T16:06:22Z
dc.date.issued2013
dc.description.abstractThe synthesis strategy for the preparation of novel platinum acetylide homometallic and heterobimetallic dendrimers (containing Fe as the other metal fragment) based on a 2,4,6-tris(4-ethynyl)phenyl-1,3,5-triazine core (3) is reported. All the dendrimer generations (G0−G2) were synthesized under copper-free conditions following a divergent route. The G0-Pt dendrimer (4) was synthesized using the 1,3,5-triazine core (3) and cis[Pt(PEt3)2Cl2] with a molar ratio of 1/4. The advantage of the current method is that different dendrimers can be prepared by following the same procedure with only changes in the molar ratios of the reactants involved. For instance, when 3 reacts with 4 in a 4/1 molar ratio, the G1 dendrimer 7 is afforded without the peripheral Pt moiety, but the G1 dendrimer with the peripheral Pt moiety (8) is formed when 3 reacts with 4 in a 1/3 molar ratio. On the other hand, the G2 dendrimer with a peripheral Pt moiety (9) is synthesized when 7 reacts with 4 in a 1/6 molar ratio. The heterobimetallic dendrimers were synthesized up to generation 1 by capping the corresponding Pt dendrimers with the ethynylferrocenyl group (EFC). The respective G0 (6)- and G1-capped (10) dendrimers were synthesized when EFC reacted with 4 and 8 in molar ratios of 9/1 and 18/1, respectively. Nonlinear optical (NLO) polarizabilities measured by hyper-Rayleigh scattering (HRS) have been evaluated for the core 3, for the G0 dendrimer 4, and for the G0 dendrimer capped with EFC (6). In spite of the fact that the stability of the higher generations in chloroform is too low to allow HRS measurements, the reported NLO results show a remarkable enhancement (plus 50%) upon capping the zero dendrimer generation (6), reflecting the importance of the introduction of electron donor organometallic capping groups in the hyperpolarizabilities of the resulting dendrimers.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMaiti, S. K., Jardim, M. G., Rodrigues, J., Rissanen, K., Campo, J., & Wenseleers, W. (2013). Divergent Route to the Preparation of Hybrid Pt–Fe 2, 4, 6-Tris (4-ethynyl) phenyl-1, 3, 5-triazine Metallodendrimers for Nonlinear Optics. Organometallics, 32(2), 406-414.pt_PT
dc.identifier.doi10.1021/om300745vpt_PT
dc.identifier.issn0276-7333
dc.identifier.urihttp://hdl.handle.net/10400.13/2412
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Chemical Societypt_PT
dc.relationStrategic Project - UI 674 - 2011-2012
dc.subjectPreparation of hybrid Pt−Fe 2,4,6-Tris(4ethynyl)phenyl-1,3,5-triazinept_PT
dc.subjectMetallodendrimers for nonlinear opticspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.subjectCentro de Química da Madeira
dc.titleDivergent route to the preparation of hybrid Pt–Fe 2,4,6-Tris(4-ethynyl)phenyl-1,3,5-triazine metallodendrimers for nonlinear opticspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - UI 674 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FQUI%2F64202%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FQUI%2FUI0674%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F65036%2F2009/PT
oaire.citation.endPage414pt_PT
oaire.citation.startPage406pt_PT
oaire.citation.titleOrganometallicspt_PT
oaire.citation.volume32(2)pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamSFRH
person.familyNameRodrigues
person.familyNameRissanen
person.familyNameWenseleers
person.givenNameJoão
person.givenNameKari
person.givenNameWim
person.identifier.ciencia-idA81C-620E-DD6A
person.identifier.orcid0000-0003-4552-1953
person.identifier.orcid0000-0002-7282-8419
person.identifier.orcid0000-0002-3509-0945
person.identifier.ridB-6816-2008
person.identifier.ridA-1787-2015
person.identifier.scopus-author-id9233278800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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