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Control of smectic layering in mono- vs disaccharide-coated polydiacetylenes

Yadav, S and Gowda, A and Rao, DSS and Prasad, SK and Jayaraman, N (2022) Control of smectic layering in mono- vs disaccharide-coated polydiacetylenes. In: Liquid Crystals .

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Official URL: https://doi.org/10.1080/02678292.2022.2055176


Amphiphilic sugar-functionalised diacetylene lipids undergo facile self-organisation in the solid state, enabling a photo-initiated polymerisation, leading to the formation of sugar-coated polydiacetylenes. The presence of hydrophilic sugar moiety and the long aliphatic chains promote amphiphilicity-driven mesomorphism in these polymers. Maintaining the lyophilic segment uniform, glycolipids that vary in their sugar constitution are prepared, in order to assess mesomorphic changes with respect to varying sugar segment. Mono- and disaccharides are chosen that allow further to identify the changes in the emerging mesomorphic property with the sugar configurations. Whereas a smectic layering is observed common in these glycolipid polymers, the mesophase temperature range and the structural ordering are observed to vary depending on the sugar segment, as adjudged by optical polarising microscopy, calorimetry and X-ray diffraction assessments. Higher clearing temperatures are seen for disaccharide containing glycolipid polymer, as compared to the monosaccharide containing polymer. Further, in conjunction with energy minimised structures, interdigitised lamellar structure is inferred to the polymers. © 2022 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Journal Article
Publication: Liquid Crystals
Publisher: Taylor and Francis Ltd.
Additional Information: The copyright for this article belongs to Taylor and Francis Ltd.
Department/Centre: Division of Chemical Sciences > Organic Chemistry
Date Deposited: 23 May 2022 06:33
Last Modified: 23 May 2022 06:33
URI: https://eprints.iisc.ac.in/id/eprint/72017

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