112231-84-2Relevant academic research and scientific papers
Examination of the interlayer strength of smectic liquid crystals through the study of partially fluorinated and branched fluorinated end-groups
Cowling, Stephen J.,Hall, Alan W.,Goodby, John W.,Wang, Ying,Gleeson, Helen F.
, p. 2181 - 2191 (2007/10/03)
Through the incorporation of partially fluorinated and branched fluorinated end-groups of ferroelectric liquid crystals we aimed to examine the effects on physico-chemical structures and properties, and electrical switching behaviour for a family of compo
Structure-activity studies of ferroelectric and antiferroelectric imine ligands and their palladium(II) complexes. An antiferroelectric metallomesogen
De Murillas, Delia Lopez,Pinol, Rafael,Ros, M. Blanca,Serrano, Jose Luis,Sierra, Teresa,De La Fuente, M. Rosario
, p. 1117 - 1127 (2007/10/03)
The synthesis and characterization of the mesomorphic and dielectric properties of new imine-based liquid crystalline compounds that exhibit tilted SmC* phases is reported. The presence of an imino linkage within the mesogenic nucleus of these compounds is significant due to the ability of benzaldimines to coordinate to metals. Complexation to a divalent metal such as Pd(II) has been studied in order to assess the effects of antiparallel dimerization of organic ligands, through metal-coordination, on the appearance of antiferroelectric order in the mesophase. An organometallic palladium(II) complex has been prepared and this shows antiferroelectric behaviour over the whole range of the tilted smectic mesophase. Structure-activity studies have also been carried out by varying structural elements in the composition of the ligands. The changes include the disposition of the linking groups within the mesogenic core, and presence of a lateral hydroxy group.
The synthesis and characterisation of a novel thiophene-based liquid crystal exhibiting ferro-, ferri- and antiferro-electric phase types
Byron, David J.,Komitov, Lachezar,Matharu, Avtar S.,McSherry, Ian,Wilson, Robert C.
, p. 1871 - 1878 (2007/10/03)
The synthesis and liquid crystal properties of (R)-(-)-4-(l-methylheptyloxycarbonyl)phenyl 5-(4-decyloxyphenyl)thiophene-2carboxylate is reported. This material exhibits the following phase types (°C): I 97.4 SA 92.2 Sc*81.4 ferri 78.8 antiferroelectric 48.6 glass state (characterised by thermal optical microscopy and differential scanning calorimetry). Results from electro-optical investigations, for example, field-induced transitions, temperature and voltage dependence and current and electro-optic response, clearly illustrate the presence of the Sc* ferro-, ferri- and antiferro-electric phase types.
