Optical and rheological properties of binary mixtures of right- and left-handed cholesteric liquid crystals

1981 ◽  
pp. 657-672 ◽  
Author(s):  
S. Pirkl ◽  
J. Mýl
Keyword(s):  
Liquid Crystals ◽  
Rheological Properties ◽  
Binary Mixtures ◽  
Cholesteric Liquid Crystals ◽  
Left Handed

The Influence of New Chiral Additives on Phase Transitions of Binary Mixtures of Some Cholesteric Liquid Crystals

2000 ◽  
Vol 321-324 ◽  
pp. 1113-1118 ◽  
Author(s):  
D.Ž. Obadović ◽  
A. Vajda ◽  
S. Jovanović-Šanta ◽  
M. Stančić ◽  
J. Petrović
Keyword(s):  
Phase Transitions ◽  
Liquid Crystals ◽  
Binary Mixtures ◽  
Cholesteric Liquid Crystals

Tuning the colour of glassy cholesteric liquid crystals using copolymerization of two left-handed menthyl- and cholesteryl-based mesogenic monomers

2021 ◽  
pp. 1-10
Author(s):  
Jin-Hua Zhang ◽  
Qi-Lin Wang ◽  
Ji-Wei Wang ◽  
Aikebaier Reheman ◽  
Zhi-Yuan Han ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Left Handed

Characteristics of Right- and Left-Handed Polymer-Dispersed Cholesteric Liquid Crystals

1994 ◽  
Vol 33 (Part 1, No. 9A) ◽  
pp. 4946-4949 ◽  
Author(s):  
Kinya Kato ◽  
Keiji Tanaka ◽  
Shinji Tsuru ◽  
Shigenobu Sakai
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Left Handed ◽  
Polymer Dispersed

THE INFLUENCE OF NEW D-SECO-ESTRONE DERIVATIVES ON THE BEHAVIOR OF THE CHOLESTERIC LIQUID CRYSTALS BINARY MIXTURES

2006 ◽  
Vol 20 (21) ◽  
pp. 2999-3013 ◽  
Author(s):  
D. Ž. OBADOVIĆ ◽  
M. STOJANOVI ◽  
S. JOVANOVIĆ-ŠANTA ◽  
D. LAZAR ◽  
A. VAJDA ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Binary Mixtures ◽  
Average Distance ◽  
Molecular Mechanic ◽  
Molecular Structures ◽  
X Ray Diffraction ◽  
Cholesteric Liquid Crystals ◽  
Cholesteric Phase ◽  
Molecular Length

We have studied the influence of the new chiral non-mesogenic seco-estrone derivatives 1-7, synthesized in several synthetic steps starting from estrone, onto the physical characteristics of the binary mixtures of cholesteric liquid crystals. We have examined the phase transitions of the mixture of cholesteryl laurate and cholesteryl enantate with the added chiral non-mesogenic additives 1-7 (45%-45%-10%; Mix.1-Mix.7, respectively). A considerable shift of the I → Ch phase transition temperature, as well as of the temperature of the SmA * phase formation, was observed. X-ray diffraction data enabled the determination of the molecular structures of the compounds 3, 5, 6 and 7, the crystal lattice parameters of the new chiral additives and their molecular length (ℓ) and width (d*), as well as some parameters of the mixtures Mix.1-Mix.6: the thickness of smectic layers and the longitudinal spacing distance in the cholesteric phase (d) and the average distance between the long axes of neighbouring molecules (D). Using molecular-mechanic calculations, on the basis of solved molecular structures, the most probably conformation of the other compounds (1, 2 and 4) used in this work is determined. We have also investigated the influence of these chiral additives onto the pitch of the cholesteric helix of a binary mixture of cholesteric liquid crystals.

Influence of chiral additives onto molecular parameters of binary mixtures of cholesteric liquid crystals

2002 ◽  
Author(s):  
D. Z. Obadovic ◽  
M. Garic ◽  
S. Jovanovic-Santa ◽  
A. Vajda ◽  
M. Petrovic ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Binary Mixtures ◽  
Cholesteric Liquid Crystals ◽  
Molecular Parameters

Doppelte Helixinversion in einem binären System cholesteriseher Komponenten mit Reehtshelix / Twojolcl Helical Inversion in a Binary System of Cholesterics with Right-handed Helix

1973 ◽  
Vol 28 (6) ◽  
pp. 1046-1047 ◽  
Author(s):  
H. Finkelmann ◽  
H. Stegemeyer
Keyword(s):  
Circular Dichroism ◽  
Liquid Crystals ◽  
Binary System ◽  
Rotatory Power ◽  
Optical Rotatory ◽  
Cholesteric Liquid Crystals ◽  
Left Handed ◽  
Circular Dichroïsm ◽  
Optical Rotatory Power

In a binary system of cholesteric liquid crystals with righthanded sense of helix a twofold helical inversion at two different molar fractions ϰn,1 and ϰn, 2 has been observed by measurements of circular dichroism and optical rotatory power. In the region of composition between ϰn,1 and ϰn, 2 all mixtures exhibit a left-handed cholesteric structure.

Optical properties of mixtures of right- and left-handed cholesteric liquid crystals

1973 ◽  
Vol 19 (4) ◽  
pp. 556-560 ◽  
Author(s):  
G.S. Ranganath ◽  
S. Chandrasekhar ◽  
U.D. Kini ◽  
K.A. Suresh ◽  
S. Ramaseshan
Keyword(s):  
Optical Properties ◽  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Left Handed

scholarly journals Rheological Properties of Cholesteric Liquid Crystals

1982 ◽  
Vol 10 (1) ◽  
pp. 39-42 ◽  
Author(s):  
Tadahiro ASADA ◽  
Yoshihiko SHIBAHARA ◽  
Shigeharu ONOGI
Keyword(s):  
Liquid Crystals ◽  
Rheological Properties ◽  
Cholesteric Liquid Crystals
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