Effect of surfactant alkyl chain length on lyotropic uniaxial to biaxial cholesteric phase transitions

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dc.authorid0000-0002-6339-8699en_US
dc.authorid0000-0002-9854-5177
dc.authorid0000-0003-4938-6971
dc.contributor.authorAkpınar, Erol
dc.contributor.authorUygur, Nazlı
dc.contributor.authorUyanık, Seda
dc.contributor.authorNeto, Antonio Martins Figueiredo
dc.date.accessioned2021-06-23T19:50:56Z
dc.date.available2021-06-23T19:50:56Z
dc.date.issued2019
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Kimya Bölümüen_US
dc.description.abstractSome ionic surfactant-based lyotropic mixtures, exhibiting cholesteric phases, were prepared to investigate the effect of the surfactant alkyl chain length on a) uniaxial-to-biaxial phase transitions and b) stabilization of different cholesteric phases. Potassium alkanoates, KCx, (potassium undecanoate, KC11, potassium dodecanoate, KC12, and potassium tridecanoate, KC13) were chosen as the surfactant molecules. The lyotropic mixtures, which were composed of KCx/potassium sulfate (K2SO4)/decanol (DeOH)/water/brucine, where brucine is a chiral dopant molecule, were studied. Partial phase diagrams were constructed to show how the surfactant alkyl chain affects the phase topologies in the phase diagrams. It was observed that the presence of a longer surfactant alkyl chain in the mixture favors the stabilization of the larger discotic cholesteric, Ch(D), and cholesteric biaxial, Ch(B), phase domains. The phase transitions from the uniaxial cholesteric to biaxial cholesteric phase were shifted to lower temperatures.en_US
dc.identifier.doi10.1140/epje/i2019-11893-8
dc.identifier.issn1292-8941
dc.identifier.issn1292-895X
dc.identifier.issue9en_US
dc.identifier.pmid31562549en_US
dc.identifier.scopus2-s2.0-85072698268en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1140/epje/i2019-11893-8
dc.identifier.urihttps://hdl.handle.net/20.500.12491/9890
dc.identifier.volume42en_US
dc.identifier.wosWOS:000487896700001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.institutionauthorAkpınar, Erol
dc.institutionauthorUygur, Nazlı
dc.institutionauthorUyanık, Seda
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofEuropean Physical Journal Een_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSoft Matteren_US
dc.subjectLiquid Crystalsen_US
dc.titleEffect of surfactant alkyl chain length on lyotropic uniaxial to biaxial cholesteric phase transitionsen_US
dc.typeArticleen_US

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