Cholesterol-based hydrogen-bonded liquid crystals

Autor:	F. Hardouin, Jun-Woo Lee, Jung-Il Jin, Marie-France Achard
Rok vydání:	2003
Předmět:	Materials science Hydrogen Hydrogen bond Intermolecular force chemistry.chemical_element General Chemistry Condensed Matter Physics Acceptor Crystallography Differential scanning calorimetry chemistry Covalent bond Liquid crystal Molecule Organic chemistry General Materials Science
Zdroj:	Liquid Crystals. 30:1193-1199
ISSN:	1366-5855 0267-8292
DOI:	10.1080/02678290310001599233
Popis:	Hydrogen bonding is a powerful tool for assembling molecules and building new liquid crystalline structures. In this study, non-symmetric dimesogens were prepared by intermolecular hydrogen bonding between rationally designed H-bond donor (3-cholesteryloxycarbonylpentanoic acid) and acceptor (4-(pyridine-4-ylmethyleneimino)phenyl 4-alkoxybenzoate) moieties. Their liquid crystalline properties were investigated by differential scanning calorimetry, polarized optical microscopy and X-ray diffraction. Cholesteric and smectic phases were observed. As for the covalently linked dimesogens, several types of smectic periodicities occur for these H-bonded cholesteryl compounds depending on the molecular parameters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1aa2792360dd7d2c63d253ecf38656bd https://doi.org/10.1080/02678290310001599233 Zobrazit plný text záznamu