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X-ray studies of the smectic B phase of the 4-bromobenzylidene-4'-alkoxyanilines.
Autorzy
Rok wydania
2012
Czasopismo
Numer woluminu
85
Strony
314-321
DOI
10.1080/01411594.2011.646268
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The results of X-ray studies of the nine members (4 ÷ 12) of the 4-bromobenzylidene-4′-alkyloxyaniline homologous series (nBBAA) in smectic B (SmB) and smectic A (SmA) phases are presented. Interestingly, no SmC phase was identified. The thickness of smectic layers in the SmA and SmB phases was estimated showing unexpectedly that in SmA it is bigger than in the SmB. For the SmB phase, orthorhombic unit cell parameters were determined as a function of temperature. The obtained data are discussed in relation to rotational dynamics.
Słowa kluczowe
liquid crystals, smectic B, Schiff bases, X-ray, smectic layer thickness
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