Impact of low molecular weight excipient octaacetylmaltose on the liquid crystalline ordering and molecular dynamics in the supercooled liquid and glassy state of itraconazole

2014 ◽  
Vol 88 (3) ◽  
pp. 1094-1104 ◽  
Author(s):  
E. Kaminska ◽  
M. Tarnacka ◽  
K. Kolodziejczyk ◽  
M. Dulski ◽  
D. Zakowiecki ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Weight ◽  
Liquid Crystalline ◽  
Glassy State ◽  
Supercooled Liquid ◽  
Low Molecular Weight

scholarly journals Thermally tunable selective formation of self-assembled fibers into two orthogonal directions in oriented liquid-crystalline smectic templates

2020 ◽  
Vol 56 (69) ◽  
pp. 9954-9957
Author(s):  
Daisuke Yamaguchi ◽  
Yuka Ikemoto ◽  
Takashi Kato
Keyword(s):  
Molecular Weight ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Layered Structures ◽  
Low Molecular Weight ◽  
Smectic A ◽  
Orthogonal Grid ◽  
Self Assembled ◽  
Low Molecular Weight Gelators ◽  
Selective Formation

Two orthogonal (grid-like) and one directional fibrous structures are selectively formed through anisotropic self-assembly of low-molecular-weight gelators in liquid-crystalline smectic A templates depending on thermally tuned layered structures.

scholarly journals Preferential Circularly Polarized Luminescence from a Nano-Segregated Liquid Crystalline Phase Using a Polymerized Twisted Nematic Platform

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2529
Author(s):  
Jae-Jin Lee ◽  
Suk-Won Choi
Keyword(s):  
Molecular Weight ◽  
Liquid Crystalline ◽  
Guest Molecule ◽  
Mixed System ◽  
Low Molecular Weight ◽  
Circularly Polarized ◽  
Molecular Systems ◽  
Circularly Polarized Luminescence ◽  
Twisted Nematic ◽  
Polarized Luminescence

In this study, a polymerized twisted nematic (TN) network was used as an extrinsic chiral platform to overcome the heterogeneity during spontaneous symmetry breaking in a mixed system comprising an achiral bent-core molecule and rod-like mesogen. The TN platform was prepared by photopolymerizing a reactive mesogen dispersed in a low molecular weight liquid crystal with TN orientation. The use of TN orientation to correct the degeneracy in bent-core molecular systems has been previously reported; however, to the best of our knowledge, this is the first study that uses an extrinsic chiral platform of a polymerized TN network. The heterogeneity in the nano-segregated phase of the achiral mixture was suppressed using the extrinsic TN platform with a twisted angle θ of ≥ |±30°|. When an achiral mixture doped with a luminescent guest molecule was refilled into the extrinsic chiral platform, preferential deracemization with one-handedness occurred, corresponding to the handedness of the TN platform. Therefore, circularly polarized luminescence with a preferential handedness can be achieved using this extrinsic chiral platform.

Flory's parameters in solutions of liquid-crystalline side-chain polymers in low-molecular weight liquid crystals

1990 ◽  
Vol 23 (23) ◽  
pp. 5020-5024 ◽  
Author(s):  
Gilles Sigaud ◽  
M. F. Achard ◽  
F. Hardouin ◽  
C. Coulon ◽  
H. Richard ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Low Molecular Weight

Thermal and Liquid Crystalline Properties of a Polymer with Amphiphilic-Mesogenic Side-Chains

2001 ◽  
Vol 709 ◽  
Author(s):  
Seiji Ujiie ◽  
Yumi Yano ◽  
Akira Mori
Keyword(s):  
Molecular Weight ◽  
Liquid Crystalline ◽  
Water Soluble ◽  
Low Molecular Weight ◽  
Side Chains ◽  
Columnar Phase ◽  
Smectic A ◽  
Smectic C ◽  
Heating And Cooling ◽  
Lyotropic Mesophases

ABSTRACTA low-molecular-weight liquid crystalline amphiphilic compound (Az6Bu) and a liquid crystalline polymethacrylate [P(Az6Bu)] with amphiphilic-mesogenic side-chains are reported in this present paper. A polyethyleneimine chain with 2-hydroxyethyl side-groups was used as the water-soluble spacer. Az6Bu exhibited a lyotropic columnar phase and no thermotropic mesophase. P(Az6Bu) showed thermotropic and lyotropic liquid crystalline properties. P(Az6Bu) formed thermotropic smectic A and C mesophases on the heating and cooling processes. The lyotropic systems consisting of P(Az6Bu) and water exhibited a smectic C lyomesophase with oilystreak and schlieren textures. The layered structures formed in the thermotropic and lyotropic mesophases are composed of a sublayer produced by the anisotropic alignment of aromatic-mesogenic groups and a sublayer of hydrophilic groups.

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