Reversible Supracolloidal Self-Assembly of Cobalt Nanoparticles to Hollow Capsids and Their Superstructures

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorNonappa, Nonappaen_US
dc.contributor.authorHaataja, Johannes S.en_US
dc.contributor.authorTimonen, Jaakko V.I.en_US
dc.contributor.authorMalola, Samien_US
dc.contributor.authorEngelhardt, Peteren_US
dc.contributor.authorHoubenov, Nikolayen_US
dc.contributor.authorLahtinen, Manuen_US
dc.contributor.authorHäkkinen, Hannuen_US
dc.contributor.authorIkkala, Ollien_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.groupauthorMolecular Materialsen
dc.contributor.organizationUniversity of Jyväskyläen_US
dc.contributor.organizationUniversity of Helsinkien_US
dc.date.accessioned2018-08-21T13:48:26Z
dc.date.available2018-08-21T13:48:26Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2018-04-29en_US
dc.date.issued2017en_US
dc.description| openaire: EC/FP7/291364/EU//MIMEFUN
dc.description.abstractThe synthesis and spontaneous, reversible supracolloidal hydrogen bond-driven self-assembly of cobalt nanoparticles (CoNPs) into hollow shell-like capsids and their directed assembly to higher order superstructures is presented. CoNPs and capsids form in one step upon mixing dicobalt octacarbonyl (Co2CO8) and p-aminobenzoic acid (pABA) in 1,2-dichlorobenzene using heating-up synthesis without additional catalysts or stabilizers. This leads to pABA capped CoNPs (core ca. 5nm) with a narrow size distribution. They spontaneously assemble into tunable spherical capsids (d≈50-200nm) with a few-layered shells, as driven by inter-nanoparticle hydrogen bonds thus warranting supracolloidal self-assembly. The capsids can be reversibly disassembled and reassembled by controlling the hydrogen bonds upon heating or solvent exchanges. The superparamagnetic nature of CoNPs allows magnetic-field-directed self-assembly of capsids to capsid chains due to an interplay of induced dipoles and inter-capsid hydrogen bonds. Finally, self-assembly on air-water interface furnishes lightweight colloidal framework films.en
dc.description.versionPeer revieweden
dc.format.extent6473–6477
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationNonappa, N, Haataja, J S, Timonen, J V I, Malola, S, Engelhardt, P, Houbenov, N, Lahtinen, M, Häkkinen, H & Ikkala, O 2017, ' Reversible Supracolloidal Self-Assembly of Cobalt Nanoparticles to Hollow Capsids and Their Superstructures ', Angewandte Chemie, vol. 56, no. 23, pp. 6473–6477 . https://doi.org/10.1002/anie.201701135en
dc.identifier.doi10.1002/anie.201701135en_US
dc.identifier.issn1433-7851
dc.identifier.issn1521-3773
dc.identifier.otherPURE UUID: f637d88c-0456-42cb-a853-e0cce3b9af51en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/f637d88c-0456-42cb-a853-e0cce3b9af51en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85018989386&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/34861599/CHEM_Nonappa_et_al_Reversible_supracolloidal_ANIE_2017_Accepted.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/33575
dc.identifier.urnURN:NBN:fi:aalto-201808214708
dc.language.isoenen
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/291364/EU//MIMEFUNen_US
dc.relation.ispartofseriesANGEWANDTE CHEMIEen
dc.relation.ispartofseriesVolume 56, issue 23en
dc.rightsopenAccessen
dc.subject.keywordCapsidsen_US
dc.subject.keywordColloidal self-assemblyen_US
dc.subject.keywordElectron tomographyen_US
dc.subject.keywordHydrogen bondingen_US
dc.subject.keywordMagnetic nanoparticlesen_US
dc.titleReversible Supracolloidal Self-Assembly of Cobalt Nanoparticles to Hollow Capsids and Their Superstructuresen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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