95880-51-6Relevant articles and documents
Long-range chiral induction in chemical systems with helical organization. Promesogenic monomers in the formation of poly(isocyanide)s and in the organization of liquid crystals
Amabilino, David B.,Ramos, Elena,Serrano, José-Luis,Sierra, Teresa,Veciana, Jaume
, p. 9126 - 9134 (2007/10/03)
The preparation of optically active poly(isocyanide)s derived from chiral promesogenic monomers is reported. Remarkably, the stereogenic carbon atom in the monomer is able to pass its chiral 'information' to the growing polymer backbone which is at least
Synthesis and Properties of Optically Active (+)-p'-2-methyl-butoxyphenyl p-(p"-alkoxybenzoyloxy)-benzoates
Dong, C. C.,Sun, Z. M.,Li, G. Z.
, p. 35 - 45 (2007/10/02)
Ten compounds of the title series represented by (d)AmPABOB were synthesized and their mesomorphic properties evaluated by DSC and optical microscopy.All the compounds have liquid crystal phases and three out of ten have a smectic C* phase.Measurements of the molecular tilt angle and the pitch were presented.Investigation on textures of mesophases revealed some anomalous phenomena.
SYNTHESIS AND THERMAL PROPERTIES OF SIDE CHAIN TYPE LIQUID CRYSTALLINE POLYMERS WITH CHIRAL UNIT IN THE FLEXIBLE MOIETY
Koide, Naoyuki,Uehara, Keiichi,Iimura, Kazuyoshi
, p. 151 - 162 (2007/10/02)
This paper is concerned with the synthesis and thermal properties for five families of side-chain type liquid crystalline polymers.All these side-chain type polymers showed an enantiotropic mesomorphic nature.A sharp reflexion was observed in the small angle region, whereas a broad halo or a relatively sharp peak was also detected in the wide angle region for all the polymers.The experimental values of the thickness of the smectic layer which can be easily assigned by the polarizing microscopic measurements were smaller than that of the calculated ones.This difference would be caused from the tilted arrangement in the smectic layer or smectic A like structure in which the side chain would be overlapped.
Synthesis and Physical Properties of Some 4-(2'-Methylbutyloxy)Phenyl 4-Alkyloxybenzoates
Dunleavy M.,Somerton, C.
, p. 335 - 344 (2007/10/02)
The synthesis of three optically active smectogens in the homologous series 4-(2'-methylbutyloxy) 4-alkyloxybenzoate is reported.The alkoxy moiety being octyloxy, nonyloxy and decyloxy.Some of the physical properties of these compounds have been measured.
New Ferroelectric Liquid Crystal Materials: (+)-4-(2-Methylbutoxycarbonyl)phenyl 4-(5-Alkyl-1,3-dioxan-2-yl)benzoate
Haramoto, Yuichiro,Kawashima, Katumasa,Kamogawa, Hiroyoshi
, p. 431 - 434 (2007/10/02)
(+)-4-(2-Methylbutoxycarbonyl)phenyl 4-(5-alkyl-1,3-dioxan-2-yl)benzoate (12), (+)-4-(2-methylbutoxy)phenyl 4-(5-alkyl-1,3-dioxan-2-yl)benzoate (11) and the corresponding 1,3-oxathiane (13, 14) and 1,3-dithiane compounds (15, 16) were synthesized.The mesomorphic behaviors of these compounds were measured.Compounds 12 exhibited the ferroelectric liquid-crystal behavior (R= n-C11H23; -4 SmC* 94 deg C), while the corresponding 1,3-oxathiane (13, 14) and 1,3-dithiane compounds (15, 16) did not exhibit such behavior.Therefore, 1,3-dioxane compounds are more favorable for transition of SmA to SmC* than the 1,3-oxathiane or 1,3-dithiane analogs.
Liquid crystalline carbonic acid esters and liquid crystal compositions containing the same
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, (2008/06/13)
A novel chiral liquid crystalline compound having an optically active group and a liquid crystal composition containing the same are provided, which compound is expressed by the general formula STR1 wherein R is a linear chain or branched alkyl group of 1
