Afficher la notice abrégée

One-step vs stepwise immobilization of 1-d coordination-based rh-rh molecular wires on gold surfaces.

hal.structure.identifierDépartement de Chimie Moléculaire [DCM]
dc.contributor.authorLOKESH, Koodlur Sannegowda
hal.structure.identifierDépartement de Chimie Moléculaire - Chimie Inorganique Redox [DCM - CIRE]
dc.contributor.authorCHARDON-NOBLAT, Sylvie
hal.structure.identifierDépartement de Chimie Moléculaire - Chimie Inorganique Redox [DCM - CIRE]
dc.contributor.authorLAFOLET, Frédéric
hal.structure.identifierDépartement de Chimie Moléculaire [DCM]
dc.contributor.authorTRAORÉ, Youssouf
hal.structure.identifierDépartement de Chimie Moléculaire - Biosystèmes Electrochimiques et Analytiques [DCM - BEA]
dc.contributor.authorGONDRAN, Chantal
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGUIONNEAU, Philippe
hal.structure.identifierDépartement de Chimie Moléculaire - Ingéniérie et Intéractions BioMoléculaires [DCM - I2BM]
dc.contributor.authorGUÉRENTE, Liliane
hal.structure.identifierDépartement de Chimie Moléculaire - Ingéniérie et Intéractions BioMoléculaires [DCM - I2BM]
dc.contributor.authorLABBÉ, Pierre
hal.structure.identifierDépartement de Chimie Moléculaire - Chimie Inorganique Redox [DCM - CIRE]
dc.contributor.authorDERONZIER, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLÉTARD, Jean-François
dc.date.issued2012
dc.identifier.issn0743-7463
dc.description.abstractEnReaction of dimeric [Rh(II)(2)(phen)(2)(μ-OAc)(2)(MeCN)(2)](BF(4))(2) (phen =1,10-phenanthroline) with pyrazine (pz) in a 1:2 ratio leads to the new 1-D metal-metal-bonded coordination oligomer {[Rh(II)(2)(phen)(2)(μ-OAc)(2)(pz)](BF(4))(2)}(n) (Rh-Rhpz)(n) (1), where each Rh atom of the dimeric unit (Rh-Rh) is coordinated in the equatorial plane to a nitrogen atom of a rigid and linear bifunctionalized organic linker (pz). Single X-ray diffraction analysis reveals the 1-D straight oligomeric chain structure (molecular wire, MW) consists of alternating (Rh-Rh) units and pz linking ligands with free BF(4)(-) as counteranions, and each metal center has a slightly distorted octahedral arrangement. The presence of accessible labile MeCN groups on both ends of these MWs ("free ends") enables functionalization of a 4-mercaptopyridine-gold coordinating platform (Au/MP) to form in one step a layer of coordination oligomer (Au/MP(Rh-Rhpz)(n); n ≈ 50). Furthermore (Rh-Rhpz)(n) (n = 1-6) MWs were grafted to Au/MP surfaces by a conventional step-by-step assembly construction involving coordination reactions between the Rh dimer ([Rh(2)(phen)(2)(μ-OAc)(2)(MeCN)(2)](BF(4))(2) (2)) and pz. A detailed physicochemical study (UV-vis, RAIR, QCM-D, ellipsometry, contact angle measurements, as well as impedance spectroscopy and cyclic voltammetry) has been made during both assembly methods to characterize the resulting surface-anchored coordination molecular wire (CMW) layers (Au/MP(Rh-Rhpz)(n)). The results indicate that the immobilized molecular assemblies (MAs) were successfully fabricated using both methods of assembly. The efficiency of the two methods is discussed.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enMolecules
dc.subject.enGold
dc.subject.enCoordination chemistry
dc.title.enOne-step vs stepwise immobilization of 1-d coordination-based rh-rh molecular wires on gold surfaces.
dc.typeArticle de revue
dc.identifier.doi10.1021/la3012537
dc.subject.halChimie/Matériaux
bordeaux.journalLangmuir
bordeaux.page11779-11789
bordeaux.volume28
bordeaux.issue32
bordeaux.peerReviewedoui
hal.identifierhal-00727626
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00727626v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Langmuir&rft.date=2012&rft.volume=28&rft.issue=32&rft.spage=11779-11789&rft.epage=11779-11789&rft.eissn=0743-7463&rft.issn=0743-7463&rft.au=LOKESH,%20Koodlur%20Sannegowda&CHARDON-NOBLAT,%20Sylvie&LAFOLET,%20Fr%C3%A9d%C3%A9ric&TRAOR%C3%89,%20Youssouf&GONDRAN,%20Chantal&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée