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Title: Strain glass analogue in a bent-core liquid crystal exhibiting the dark conglomerate phase
Authors: Roy, Arun
Gupta, Meenal
Radhika, S.
Sadashiva, B.K.
Pratibha, R.
Issue Date: 21-Jul-2012
Citation: Soft Matter, 2012, Vol.8, p3207
Abstract: Vitrified states formed from the dark conglomerate liquid crystal (DCLC) phase, by two members of a homologous series made of bent-core molecules derived from 2,7-dihydroxynaphthalene under different cooling procedures, have been characterised using a variety of experimental techniques, such as optical microscopy, differential scanning calorimetry, X-ray diffraction, electro-optics, dielectric spectroscopy and atomic force microscopy. The experimental results show that though the vitrified state formed on gradual cooling of the sample from the DC phase has some glassy features, it is fragile and undergoes crystallisation over time. On the other hand, direct quenching of the DC phase to room temperature results in stronger glass formation. We propose that the vitrified state obtained on progressive cooling of the DC phase may have some analogy to strain glass and that the DC phase itself may be rather like unfrozen strain glass
Description: Restricted Access.
ISSN: 1744-683X
1744-6848 (Online)
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Copyright: 2012 Royal Society of Chemistry
Appears in Collections:Research Papers (SCM)

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