Synchrotron X-ray investigation of the layer spacing in a series of low molar mass bi-mesogen organosiloxane smectic materials.
Carboni, C, Carboni, DG, Jozić, D et al. (3 more authors)
(2014)
Synchrotron X-ray investigation of the layer spacing in a series of low molar mass bi-mesogen organosiloxane smectic materials.
In:
Phase Transitions.
XX Conference on Liquid Crystals, 15-20 Sep 2013, Mikolajki, Poland.
Taylor and Francis
, 739 - 745.
Abstract
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 °C and 36 °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.
Metadata
Item Type:
Proceedings Paper
Authors/Creators:
Carboni, C
Carboni, DG
Jozić, D
Bernstorff, S
Rappolt, M
Al-Mahrazi, S
Copyright, Publisher and Additional Information:
(c) 2014, Taylor and Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in Phase Transitions on 4 April 2014, available online: http://dx.doi.org/10.1080/01411594.2014.893336
CORE (COnnecting REpositories)
CORE (COnnecting REpositories)