Smectic translational order parameter in two liquid crystalline compounds

Vinutha, N.; Usha, M. K.; Somashekar, R.; Revannasiddaiah, D.

doi:10.1080/01411594.2014.1001846

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…The smectic translational order Σ helps us in the understanding the molecular ordering inside de layer of smectic mesophases. It was determined in this work by a method previously describe by Kapernaum and Giesselmann . It is defined as the amplitude of the density wave arising from the 1D‐periodic smectic layer structure.…”

Section: Resultsmentioning

confidence: 99%

Insight into Out‐of‐Layer Fluctuations in the Smectic A Stability of 3,5‐Diarylisoxazole Liquid Crystals

et al. 2020

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Polar‐terminated 3,5‐diarylisoxazole liquid crystals (ILCs) were synthetized and characterized. ILCs are composed by rigid core 3,5‐diarylisoxazol, alkyl chain and polar‐terminated flexible spacer. Hydroxyl‐, ketal‐ and 1,2‐diol‐terminated ILCs rendered smectic C and A mesophase, while bromine‐terminated ILCs showed smectic A and B mesophase, for monosubstituted and linear ILCs. For branched alkyl chain monotropic SmA was detected and for disubstituted ILCs no mesophase was detected. Out‐of‐layer fluctuations (OLFs) are discussed based on X‐ray diffraction date and textures. The OLFs are dependent on the bromine atom hardness, hydrogen bonding through collective actions and conformational effects at the interface between layers. Smectic translational order parameter (TOP) Σ was also obtained for orientated bromine‐ and hydroxyl‐terminated ILCs and related it with OLFs. For 1,2‐diol‐terminated ILCs two SmC sublayers were founded, probably related to the intramolecular hydrogen bond favoring the 5‐membered and 6‐membered formation.

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Section: Resultsmentioning

confidence: 99%