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Effect of alkyl chains length on properties of ferroelectric liquid crystals with the keto group attached to the molecule core

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    0382178 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
    Bubnov, Alexej - Novotná, Vladimíra - Pociecha, D. - Hamplová, Věra - Kašpar, Miroslav
    Effect of alkyl chains length on properties of ferroelectric liquid crystals with the keto group attached to the molecule core.
    Phase Transitions. Roč. 85, č. 10 (2012), s. 849-860. ISSN 0141-1594. E-ISSN 1029-0338
    Grant CEP: GA ČR(CZ) GAP204/11/0723
    Grant ostatní: AV ČR(CZ) M100101211; AV ČR(CZ) M100101204
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: ferroelectric liquid crystal * keto group * lactic acid derivative * spontaneous quantities * SAXS * helix pitch
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 0.863, rok: 2012
    http://www.tandf.co.uk/journals/titles/01411594.asp

    In order to contribute to better understanding of the molecular structure – physical property relationship, properties of ferroelectric liquid crystalline materials derived from the lactic acid with the keto group in the molecular core has been studied. These compounds differing only by the length of the chiral and non-chiral alkyl chains exhibit the paraelectric SmA* and the ferroelectric SmC* phase over 150 K broad temperature range down to the room temperature. Temperature dependences of spontaneous polarization, tilt angle, layer spacing, helix pitch length and dielectric permittivity has been compared and discussed for all studied compounds. The effect of the alkyl chains length on mesomorphic properties has been established and discussed in comparison to that of similar materials.
    Trvalý link: http://hdl.handle.net/11104/0212475

     
     
Počet záznamů: 1