mesogenic unit

mesogenic unit

[¦mez·ə¦jen·ik ′yü·nət]
(physical chemistry)
A component of a molecule that induces a mesomorphic or liquid crystalline phase. Also known as mesagen.
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References in periodicals archive ?
24] synthesized a rigid rod epoxy monomer containing the long mesogenic unit of biphenyl and the aromatic ester group.
Synthesis, characterization, and thermomechanical properties of liquid crystalline epoxy resin containing ketone mesogen
90 ppm corresponds to the methylene attached to the oxygen in the alkyl chains of the mesogenic unit and to the methynic proton b'.
New liquid crystalline columnar poly(epichlorohydrin-co-ethylene oxide) derivatives leading to biomimetic ion channels
Figure 4 presents the molecular model of the mesogenic unit of HBA-ETP (37, 38) and Fig.
Mathematical modeling and computer simulations of the flow, nematic phase orientation, and heat transfer in thermotropic liquid crystalline polymers
The diol monomer was designed to carry the mesogenic unit, which was selected to be the cyanobiphenyl group to produce materials with a strong dipole positioned along the long axis of the mesogenic unit.
Properties of side chain liquid crystal polyesters containing chiral groups in the main chain
The literature describes various ways of modifying the resins in order to improve their elasticity: introduction of substituents into the mesogenic units, (5) introduction of a flexibility spacer between the mesogenic units, (6,7) introduction of a flexibility spacer which decouples the reactive end-functional group from the rigid-rod mesogenic group, (8) or curing reaction of rigid-rod mesogenic epoxy monomers with aliphatic dicarboxylic acids.
Self-stratifying coatings based on Schiff base epoxy resins
Blumstein, "Mematic and chlosteric thermotropic polyesters with azoxybenzene mesogenic units and flexible spacers in the main chain, " J.
Optimizing adhesion and cohesion parameters in vulcanized rubber-metal bonding
Comparison of the properties of aromatic polyesters with different mesogenic units and a common flexible spacer," Journal of Polymer Science A-1, Polymer Chemistry, vol.
Facile synthesis, characterization, and in vitro antimicrobial and anticancer activities of biscoumarin copolyester bearing pendant 3-(trifluoromethyl)styrene
In this study, we synthesized a novel LC dicarboxylic acid curing agent (DACA), which is composed of 2,6-naphthalene and 1,4-phenylene mesogenic units.
Curing behavior, thermal, and mechanical properties of epoxy resins cured with a novel liquid crystalline dicarboxylic acid curing agent
It has been indicated that the degree of overlapping between two mesogenic units depends on their spacer lengths.
Liquid crystalline and photocrosslinkable Poly(4,4'-stilbeneoxy) Alkylarylphosphates
Liquid crystalline epoxies, which contain rigid mesogenic units in place of the kinked and flexible structure of bisphenol-A, can be cured so that the resulting network has a liquid crystalline structure consisting of ordered domains of various sizes.
The effect of stoichiometry on the fracture toughness of a liquid crystalline epoxy
5A is less than two side-chains plus the backbone, suggesting an interdigitation of,the mesogenic units between adjacent layers with on overlap of [nearly equal to] 12A, a distance that corresponds roughly to the molecular length of the mesogenic core.
Pyroelectric and dielectric properties of side-chain liquid crystal polymers
The LCP containing triad aromatic ester type mesogenic units, TR-4,6, however, revealed poor adhesion toward the PBT matrix.
Blends of thermotropic liquid crystalline polyesters and poly(butylene terephthalate): thermal, mechanical, and morphological properties

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