TILTED LAYERED PHASES - THE INFLUENCE OF THE INCLUSION OF A NONLINEARMACROCYCLE IN CALAMITIC LIQUID-CRYSTALS - SYNTHESIS AND PHASE-BEHAVIOR

Citation
Rp. Tuffin et al., TILTED LAYERED PHASES - THE INFLUENCE OF THE INCLUSION OF A NONLINEARMACROCYCLE IN CALAMITIC LIQUID-CRYSTALS - SYNTHESIS AND PHASE-BEHAVIOR, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 304, 1997, pp. 223
Citations number
7
Categorie Soggetti
Crystallography
ISSN journal
1058725X
Volume
304
Year of publication
1997
Database
ISI
SICI code
1058-725X(1997)304:<223:TLP-TI>2.0.ZU;2-8
Abstract
This paper describes the synthesis and the characherisation of the pha se behaviour of a homologous series based on the macrocycle 1,7-diaza- 4,10,13-tri-oxa-cyclopentadecane. The mesogenic units attached to the two aza-groups consist of three aromatic rings and the length of the t erminal chain is varied between six and sixteen methylene groups. Thre e different types of tilted smectic phases were observed which are bel ieved to differ in their layer packing in that one may have aligned ti lt (normal smectic C) and the other two may have alternating tilt.