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Stretching and folding of 2-nanometer hydrocarbon rods

dc.contributor.authorLüttschwager, Nils O. B.
dc.contributor.authorSuhm, Martin A.
dc.date.accessioned2014-06-03T08:04:13Z
dc.date.available2014-06-03T08:04:13Z
dc.date.issued2014
dc.relation.ISSN1744-6848
dc.identifier.urihttp://resolver.sub.uni-goettingen.de/purl?gs-1/10163
dc.description.abstractLinear alkanes CnH2n+2 in vacuum isolation are finite models for an infinite polyethylene chain. Using spontaneous Raman scattering in supersonic jet expansions for n = 13–21 in different spectral ranges, we determine the minimal chain length nh for the cohesion-driven folding of the preferred extended all-trans conformation into a hairpin structure. We treat fully stretched all-trans alkanes as molecular “nanorods” and derive Young's modulus E for the stretching of an isolated single-strand polyethylene fibre by extrapolating the longitudinal acoustic mode to infinite chain length. Two key quality parameters for accurate intra- and intermolecular force fields of hydrocarbons (nh = 18 ± 1, E = 305 ± 5 GPa) are thus derived with high accuracy from experimental spectroscopy.
dc.language.isoeng
dc.rightsopenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/
dc.subjectLinear alkanes
dc.titleStretching and folding of 2-nanometer hydrocarbon rods
dc.identifier.doi10.1039/c4sm00508b
dc.type.versionpublishedVersion
dc.identifier.fs608589
dc.type.subtypejournalArticle
dc.identifier.pmid24866111
dc.relation.ispartofseriesSoft Matter
dc.bibliographicCitation.articlenumberAdvance Article
dc.description.statuspeerReviewed


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