Synchrotron X-ray investigation of the layer spacing in a series of low molar mass bi-mesogen organosiloxane smectic materials

被引：0
|
作者：
Carboni, Carlo [1 ]
Carboni, David G. [1 ]
Jozic, Drazan [2 ,3 ]
Bernstorff, Sigrid [2 ]
Rappolt, Michael [4 ,5 ]
Al-Mahrazi, Samia [1 ]
机构：
[1] Sultan Qaboos Univ, Dept Phys, Muscat, Oman
[2] Univ Split, Fac Chem & Technol, Dept Inorgan Technol, Split, Croatia
[3] Elettra Sincrotrone Trieste, Basovizza, TS, Italy
[4] Austrian Acad Sci, Inst Biophys & Xray Struct Res, Graz, Austria
[5] Univ Leeds, Sch Food Sci & Nutr, Leeds, W Yorkshire, England
来源：
PHASE TRANSITIONS | 2014年 / 87卷 / 08期
关键词：
organosiloxane; bi-mesogen; synchrotron X-ray; smectic liquid crystal; ferroelectric; layer spacing; LIQUID-CRYSTALS; ELECTROOPTIC RESPONSE; PHASE; TRANSITION;
D O I：
10.1080/01411594.2014.893336
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The temperature dependence of the layer spacing of a series of chiral bi-mesogen organosiloxane liquid-crystal materials is presented. The detailed measurements were taken at the ELETTRA radiation source in Trieste on thin specimens contained between glass coverslips. In the materials with 10 and 11 spacers between the siloxane and the mesogenic moiety, it is observed that the temperature dependence of the layer spacing is not monotonous. In the material with six spacers, there is an abrupt change of 0.01 nm in the layer spacing between 35 degrees C and 36 degrees C. In this temperature range, domains with both layer spacing coexist. This observation is in agreement with polarised light microscopy observations; however, detailed differential scanning calorimetry (DSC) measurements show no heat associated with this transition.
引用
收藏
页码：739 / 745
页数：7
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    Altenkirch, J.
    Gibmeier, J.
    Kostov, V.
    Kromm, A.
    Kannengiesser, Th
    Doyle, S.
    Wanner, A.
    [J]. JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, 2011, 46 (07): : 563 - 579
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    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1980, 35-6 (JAN-) : 561 - 566
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    Jung, M. -C.
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    Shin, Hyun-Joon
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    Chvalun, SN
    Blackwell, J
    Kwon, YK
    Percec, V
    [J]. MACROMOLECULAR SYMPOSIA, 1997, 118 : 663 - 675
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    WARD, AJ
    SHORT, RD
    [J]. POLYMER, 1993, 34 (20) : 4179 - 4185
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    [J]. JOURNAL OF SYNCHROTRON RADIATION, 2015, 22 : 863 - 864
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