Show simple item record

AuthorMayer, Oliverdc.contributor.author
Date of accession2016-03-14T13:39:28Zdc.date.accessioned
Available in OPARU since2016-03-14T13:39:28Zdc.date.available
Year of creation2006dc.date.created
AbstractIn this thesis, the aim was the defined synthesis of Cobalt-nanoparticles by help of nanoscaled, structuring stabilizers. This goal was reached using two different kinds of nano-template. In the first part of the present work, low-molecular surfactants were taken and special systems were optimized, until we could control size, order and dispersion of the particles. As last consequence, we found a way of producing a long-time stable Co-powder, which was tested to be ferromagnetic at least for 1 year at ambient atmosphere. This is an aggregate, which is formed at temperatures between 170 ° C and 180 ° C containing TDS-protected Co-nanoparticles, which can be redispersed from this powder even 1 year after synthesis, while the magnetic properties stay unchanged. The second part of this work was dealing with block copolymer micelles as structure and stability source. The mechanism of Co(II)-uptake into block copolymer micelles of the type PS-b-P2VP could be cleared. The most successful way to generate Co-metal within polymeric micelles was the thermal decomposition of Co2(CO)8 within the micelles. In der vorliegenden Arbeit war das Ziel, die definierte Synthese von Cobalt-Nanopartikeln mit Hilfe von nanostrukturierten, strukturgebenden Stabilisatoren zu bewerkstelligen. Es konnte ein Co-Partikelpulver hergestellt werden, das über einen Zeitraum von 1 Jahr hinweg an der Luft seine ferromagnetischen Eigenschaften behielt. Der zweite Teil dieser Arbeit handelt über PS-b-P2VP-Mizellen als Strukturelement bei der Herstellung von Co-Nanoteilchen. Die erfolgreichste Route ist die Verwendung der thermischen Zersetzung von Co2(CO)8 innerhalb des Mizellkerns.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandard (Fassung vom 03.05.2003)dc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v1dc.rights.uri
Dewey Decimal GroupDDC 540 / Chemistry & allied sciencesdc.subject.ddc
LCSHBlock copolymersdc.subject.lcsh
LCSHFerromagnetismdc.subject.lcsh
MeSHNanoparticlesdc.subject.mesh
TitleControlled formation of cobalt-particles in nanoscaled self-assembled structuresdc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-460dc.identifier.doi
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-56281dc.identifier.urn
GNDCobaltdc.subject.gnd
GNDFerromagnetismusdc.subject.gnd
GNDMicelledc.subject.gnd
GNDNanopartikeldc.subject.gnd
FacultyFakultät für Naturwissenschaftenuulm.affiliationGeneral
Date of activation2006-07-28T13:21:26Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 11.171 ; W: W-H 9.289uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS ID5628uulm.vtsID
CategoryPublikationenuulm.category
Bibliographyuulmuulm.bibliographie


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record