- Tytuł:
- Studies of Phase Diagram of a Liquid Crystal with 4-[2-(3-Fluorophenyl)ethyl]biphenyl Core of Molecules
- Autorzy:
-
Kolek, Ł.
Massalska-Arodź, M.
Majda, D.
Wantusiak, B.
Zalewski, S.
Kula, P. - Powiązania:
- https://bibliotekanauki.pl/articles/1419572.pdf
- Data publikacji:
- 2012-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
64.70.M-
62.20.Jk - Opis:
- Basing on the results of differential scanning calorimetry and transmitted light intensity methods and texture observations in the temperature range from - 50C to 90C phase diagram of 1-[3-fluoro-4-(1-methylheptyloxycarbonyl)phenyl]-2-[4'-(2,2,3,3,4,4,4-heptafluorobutoxybutoxy)biphenyl-4-yl]ethane was established. Monotropic system of thermodynamic phases was found. On cooling the isotropic phase transforms at 85C to ferroelectric SmC* phase and further two liquid crystalline phases, antiferroelectric $SmC*_{A}$ and SmI, and a metastable crystal Cr2 reveal. During heating exothermic anomaly in the wide temperature range was observed and ascribed to evolution of Cr2 to the stable crystal Cr1. On further heating both $SmC*_{A}$ and SmC* phases were observed. Thermodynamic parameters were calculated for all phase transitions. During rapid cooling (10 K/min) vitrification of metastable Cr2 crystal at $T_{g}$ = - 115C was registered.
- Źródło:
-
Acta Physica Polonica A; 2012, 122, 2; 370-374
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł