Synthesis, Characterization And Mesomorphic Properties Of Side Chain Liquid Crystalline Oligomer Having Schiff Base Type Mesogenic Group

2014 ◽  
Vol 5 (6) ◽  
pp. 333-338 ◽  
Author(s):  
H. E. Gulbas
Keyword(s):  
Schiff Base ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Mesogenic Group ◽  
Mesomorphic Properties

Liquid Crystalline Side Chain Polymers with Fluorene as Mesogenic Group

1990 ◽  
Vol 193 (1) ◽  
pp. 171-175 ◽  
Author(s):  
G. Kossmehl ◽  
M. Schulz ◽  
H.-M. Vieth ◽  
A. Van Der Est
Keyword(s):  
Liquid Crystalline ◽  
Side Chain ◽  
Mesogenic Group

SIDE CHAIN LIQUID CRYSTAL POLYMERS FOR QUADRATIC NONLINEAR OPTICS

1996 ◽  
Vol 05 (04) ◽  
pp. 735-755 ◽  
Author(s):  
D. GONIN ◽  
B. GUICHARD ◽  
M.C.J. LARGE ◽  
T. DANTAS DE MORAIS ◽  
C. NOËL ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Statistical Models ◽  
Liquid Crystalline ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Mesogenic Group ◽  
Liquid Crystallinity ◽  
Polar Order

In this paper we consider the behavior of a number of side chain liquid crystal polymers having the same mesogenic group and relate their liquid crystalline behavior to their polarization and nonlinear optical properties. We show that the liquid crystallinity of the materials results in an enhancement of the polar order over that of isotropic materials, in qualitative agreement with molecular statistical models.

The Effect of Hydrogen Bonding on the Mesomorphic Properties for Side Chain Type Liquid Crystalline Polyurethanes

1996 ◽  
Vol 425 ◽  
Author(s):  
T. Mihara ◽  
N. Koide
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Flexible Chain ◽  
Remarkable Change ◽  
Polymer Backbone ◽  
Phase Transition Temperatures ◽  
Ft Ir ◽  
Mesomorphic Properties ◽  
Chain Type

AbstractMesomorphic properties and temperature dependence of the hydrogen bonding between urethane bonds (H-bonding) for side chain type liquid crystalline polyurethane(SLCPU)s were studied by thermally controlled FT-IR spectroscopy. A remarkable change in the strength of H-bonding for SLCPUs with a flexible chain in the polymer backbone(flexible SLCPUs) was displayed near the phase transition temperatures, while small changes in the strength of H-bonding for SLCPUs with a rigid moiety in the polymer backbone(rigid SLCPUs) was influenced by a mesogenic group in the side chain and the flexible chain length in the polymer backbone. Furthermore, in order to study the influence of H-bonding in rigid SLCPUs, polyurethane derivatives with methyl group were synthesized replacing hydrogen in urethane bonds. No mesomorphic properties for polyurethane derivatives obtained were exhibited. It was concluded that H-bonding played an important role to exhibit mesomorphic properties of rigid SLCPUs.

Syhthesis and Mesomorphic Properties of Side-Chain Liquid-Crystalline Polysiloxanes Exhibiting Spherulite Texture of Polymeric Smectic A Phase

2011 ◽  
Vol 26 (4) ◽  
pp. 437-442
Author(s):  
李颖 LI Ying ◽  
张广成 ZHANG Guang-cheng ◽  
刘斌 LIU Bin ◽  
蒋莹 JIANG Ying ◽  
孙伟民 SUN Wei-min
Keyword(s):  
Liquid Crystalline ◽  
Side Chain ◽  
Smectic A ◽  
Smectic A Phase ◽  
Mesomorphic Properties
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