Liquid crystalline analogues of curcumin

Autor:	Ewa Gorecka, Katarzyna Kuć, Mirosław Salamończyk, Tomasz Deptuła, Anna Zep, Jadwiga Szydłowska, Adam Krówczyński
Rok vydání:	2014
Předmět:	Materials science Mesogen General Chemistry Pyrazole Condensed Matter Physics Ring (chemistry) chemistry.chemical_compound Crystallography chemistry Liquid crystal Alkoxy group Organic chemistry General Materials Science Lamellar structure Isoxazole Columnar phase
Zdroj:	Liquid Crystals. 41:685-693
ISSN:	1366-5855 0267-8292
DOI:	10.1080/02678292.2013.875227
Popis:	Compounds that are modifications of curcumin were synthesised and their mesogenic properties were studied. The central keto-enolic ring in curcumin was replaced by either a pyrazole or an isoxazole ring. This gives compounds that can form liquid crystalline phases. When two alkoxy chains are attached to the molecule, nematic and lamellar phases appear; in the case of six alkoxy chains, a hexagonal columnar phase is created. The columnar phase is constructed from columns that in the cross-section have two molecules. The pyrazole derivatives in the columnar phase preserve N–H–N hydrogen bonding.
Databáze:	OpenAIRE
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