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Systematic study of the chiral smectic phases of a fluorinated compound

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dc.abstract.enPhysical properties of the partially fluorinated compound 3F5FPhF, with hockey stick-like molecules, were studied by complementary methods. Apart from the already reported paraelectric SmA*, ferroelectric SmC* and antiferroelectric SmC*A phases, the presence of the smectic C*α subphase in the phase sequence was proved by differential scanning calorimetry, polarising optical microscopy, electro-optic and dielectric spectroscopy methods. The temperature dependence of the smectic layer thickness and correlation length of the lateral short-range order was determined by X-ray diffraction. Based on dielectric measurements three relaxation processes were revealed in the antiferroelectric SmC*A phase (two collective: PL, PH and one molecular: s-process), two collective ones (Goldstone and soft modes) were found both in the ferroelectric SmC* phase and SmC*α subphase while one relaxation process (soft mode) in the paraelectric SmA* phase. The results were compared with that obtained for other structurally similar compounds, and it was shown that even addition of one methylene group to the side chain influences much on the physical properties.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorDeptuch, Aleksandra
dc.contributor.authorPociecha, Damian
dc.contributor.authorFryń, Patryk Łukasz
dc.contributor.authorLalik, Sebastian Paweł
dc.contributor.authorMarzec, Monika
dc.contributor.authorJaworska-Gołąb, Teresa
dc.contributor.authorUrbańska, Magdalena
dc.contributor.authorTykarska, Marzena
dc.contributor.authorDardas, Dorota
dc.date.accessioned2024-01-26T09:28:38Z
dc.date.available2024-01-26T09:28:38Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.number15
dc.description.volume46
dc.identifier.doi10.1080/02678292.2019.1622044
dc.identifier.issn0267-8292
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/121357
dc.identifier.weblinkhttps://www.tandfonline.com/doi/full/10.1080/02678292.2019.1622044
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofLiquid Crystals
dc.relation.pages2256-2268
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enAntiferroelectric liquid crystal
dc.subject.endielectric relaxation
dc.subject.enelectro-optic parameters
dc.subject.ensubphase alpha
dc.subject.enX-ray diffraction
dc.titleSystematic study of the chiral smectic phases of a fluorinated compound
dc.typeJournalArticle
dspace.entity.typePublication