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2015-04-22Zeitschriftenartikel DOI: 10.18452/13689
The non-aqueous fluorolytic sol–gel synthesis of nanoscaled metal fluorides
dc.contributor.authorKemnitz, Erhard
dc.contributor.authorNoack, Johannes
dc.date.accessioned2017-06-17T16:14:15Z
dc.date.available2017-06-17T16:14:15Z
dc.date.created2017-02-20
dc.date.issued2015-04-22
dc.date.submitted2015-03-05
dc.identifier.urihttp://edoc.hu-berlin.de/18452/14341
dc.descriptionAvailable open access thanks to the RSC Gold for Gold initiative. Shared according to the terms set out in the CC licence.
dc.description.abstractThis review article focuses on the mechanism of the non-aqueous fluorolytic sol gel-synthesis of nanoscopic metal fluorides and hydroxide fluorides. Based on MAS-NMR, XRD, WAXS and SAXS investigations in combination with computational calculations, it is shown that a stepwise replacement of alkoxide by F-ions takes place resulting in the formation of a large variety of metal alkoxide fluoride clusters, some of them being isolated and structurally characterised. It is shown that these nanoscopic metal fluorides obtained via this new synthesis approach exhibit distinctly different properties compared with their classically prepared homologues. Thus, extremely strong solid Lewis acids are available which give access to new catalytic reactions with sometimes unexpectedly high conversion degrees and selectivity. Even more interestingly, metal hydroxide fluorides can be obtained via this synthesis route that are not accessible via any other approach for which the hydroxide to fluoride ratios can be adjusted over a wide range. Optically fully transparent sols obtained in this way can be used for the first time to manufacture antireflective coatings, corundum ceramics with drastically improved properties as well as novel metal fluoride based organic–inorganic composites. The properties of these new fluoride based materials are presented and discussed in context with the above mentioned new fields of application.eng
dc.language.isoeng
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 3.0) Namensnennung 3.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaften
dc.titleThe non-aqueous fluorolytic sol–gel synthesis of nanoscaled metal fluorides
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-100244305
dc.identifier.doihttp://dx.doi.org/10.18452/13689
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-year2015
dc.description.versionPeer Reviewed
dcterms.bibliographicCitation.doi10.1039/c5dt00914f
dcterms.bibliographicCitation.journaltitleDalton Transactions
dcterms.bibliographicCitation.volume44
dcterms.bibliographicCitation.issue45
dcterms.bibliographicCitation.originalpublishernameThe Royal Society of Chemistry
dcterms.bibliographicCitation.pagestart19411
dcterms.bibliographicCitation.pageend19431
bua.departmentMathematisch-Naturwissenschaftliche Fakultät

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