844697-11-6Relevant academic research and scientific papers
Influence of the alkyl spacer length on the phase transition behaviour of the Λ-shaped liquid crystal
Yamaguchi, Akihisa,Yoshizawa, Atsushi,Nishiyama, Isa,Yamamoto, Jun,Yokoyama, Hiroshi
, p. 85/[1951]-95/[1961] (2007/10/03)
We reported that a novel λ-shaped liquid-crystalline molecule 1-6 in which a cyanobiphenyl and two phenylpyrimidine groups are connected to 3, 4-dihydroxy-benzoic acid exhibits an incommensurate SmA phase. In the present study, we have prepared the homolo
Unusual smectic phases organized by novel λ-shaped mesogenic molecules
Yamaguchi, Akihisa,Nishiyama, Isa,Yamamoto, Jun,Yokoyama, Hiroshi,Yoshizawa, Atsushi
, p. 280 - 288 (2007/10/03)
A homologous series of novel λ-shaped mesogenic compounds in which three mesogenic groups are connected to 3, 4-dihydroxybenzoic acid has been prepared and their physical properties investigated by means of optical microscopy, differential scanning calorimetry and X-ray diffraction measurements. The λ-shaped compounds studied showed unusual smectic phases. 4-Cyanobiphenyl-4′-yl 3,4-bis{6-[4-(5-octylpyrimidin-2-yl) phenyloxy]hexyloxy}benzoate was found to realize an incommensurate SmA (SmAinc) phase. A "uniform planarly" aligned sample of 2-(4-octylphenyl) pyrimidin-5-yl 3,4-bis{6-[4-(5-octylpyrimidin-2-yl)phenyloxy]hexyloxy} benzoate showed a Schlieren-like texture in the smectic phase. We discuss structural effects of the λ-shaped compounds on molecular organization in liquid-crystalline phases.
