Molecular and crystalline structure of some new derivatives of p-menthane-3-ones: chiral components of liquid crystalline systems

2001 ◽  
Author(s):  
Viktor I. Kulishov ◽  
Lidiya A. Kutulya ◽  
V. P. Kuznetsov ◽  
A. S. Tolochko ◽  
V. V. Vashchenko
Keyword(s):  
Crystalline Structure ◽  
Liquid Crystalline ◽  
Derivatives Of

Liquid-crystalline structure–property relationships in halogen-terminated derivatives of cyanobiphenyl

2014 ◽  
Vol 41 (11) ◽  
pp. 1635-1646 ◽  
Author(s):  
Edward J. Davis ◽  
Richard J. Mandle ◽  
Bethany K. Russell ◽  
Phillip Y. Foeller ◽  
Matthew S. Cook ◽  
...  
Keyword(s):  
Crystalline Structure ◽  
Liquid Crystalline ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Liquid Crystalline Structure ◽  
Derivatives Of

Electron microscopy of crystalline structure in thermotropic random copolymers

1991 ◽  
Vol 49 ◽  
pp. 1054-1055
Author(s):  
Afzana Anwer ◽  
S. Eilidh Bedford ◽  
Richard J. Spontak ◽  
Alan H. Windle
Keyword(s):  
Electron Microscopy ◽  
Crystalline Structure ◽  
Liquid Crystalline ◽  
Elevated Temperatures ◽  
Random Copolymers ◽  
Molecular Characteristics ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Identical Monomer ◽  
Periodic Layer

Random copolyesters composed of wholly aromatic monomers such as p-oxybenzoate (B) and 2,6-oxynaphthoate (N) are known to exhibit liquid crystalline characteristics at elevated temperatures and over a broad composition range. Previous studies employing techniques such as X-ray diffractometry (XRD) and differential scanning calorimetry (DSC) have conclusively proven that these thermotropic copolymers can possess a significant crystalline fraction, depending on molecular characteristics and processing history, despite the fact that the copolymer chains possess random intramolecular sequencing. Consequently, the nature of the crystalline structure that develops when these materials are processed in their mesophases and subsequently annealed has recently received considerable attention. A model that has been consistent with all experimental observations involves the Non-Periodic Layer (NPL) crystallite, which occurs when identical monomer sequences enter into register between adjacent chains. The objective of this work is to employ electron microscopy to identify and characterize these crystallites.

Photoconductive Liquid-Crystalline Derivatives of 6-Oxoverdazyl

2012 ◽  
Vol 134 (5) ◽  
pp. 2465-2468 ◽  
Author(s):  
Aleksandra Jankowiak ◽  
Damian Pociecha ◽  
Jacek Szczytko ◽  
Hirosato Monobe ◽  
Piotr Kaszyński
Keyword(s):  
Liquid Crystalline ◽  
Derivatives Of

scholarly journals Perylene-like Dyes in Liquid Crystalline Media

1996 ◽  
Vol 51 (7) ◽  
pp. 843-850 ◽  
Author(s):  
Ewa Mykowska ◽  
Danuta Bauman
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Order Parameter ◽  
Liquid Crystalline ◽  
Fluorescent Dyes ◽  
Liquid Crystal Display ◽  
Isotropic Phase ◽  
Display Devices ◽  
Electrooptical Properties ◽  
Derivatives Of

Abstract The spectral and electrooptical properties of some dichroic fluorescent dyes (derivatives of 3.4,9,10-perylenetetracorboxylic acid and of 3,4,9-perylenetricarboxylic acid) in isotropic solvents and nematic liquid crystals have been studied. The order parameter of the dyes in the anisotropic matrices has been determined by means of optical spectroscopy methods. Moreover, the influence of the dye addition on the nematic-isotropic phase transition temperature of the pure host has been investigated. It was found that some of the dyes studied can be utilized in guest-host liquid crystal display devices.

A novel class of mesogens: liquid-crystalline derivatives of linear oligoalkylene amides

1995 ◽  
Vol 5 (12) ◽  
pp. 2247 ◽  
Author(s):  
Uwe Stebani ◽  
G�nter Lattermann ◽  
Reinhard Festag ◽  
Michael Wittenberg ◽  
Joachim Heinz Wendorff
Keyword(s):  
Liquid Crystalline ◽  
Derivatives Of

ChemInform Abstract: Novel Synthesis of Calamitic and Discotic Liquid Crystalline Derivatives of Tetrathiafulvalene (TTF).

ChemInform ◽  
2010 ◽  
Vol 29 (18) ◽  
pp. no-no
Author(s):  
R. A. BISSELL ◽  
N. BODEN ◽  
R. J. BUSHBY ◽  
C. W. G. FISHWICK ◽  
E. HOLLAND ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Novel Synthesis ◽  
Derivatives Of

Liquid Crystalline Derivatives of Bis(tricarbollide)Fe(II)

2007 ◽  
Vol 46 (15) ◽  
pp. 6078-6082 ◽  
Author(s):  
Adam Januszko ◽  
Piotr Kaszynski ◽  
Bohumír Grüner
Keyword(s):  
Liquid Crystalline ◽  
Derivatives Of

Liquid crystalline structure of solutions of poly-γ-benzyl-L-glutamate

1987 ◽  
Vol 29 (4) ◽  
pp. 804-810 ◽  
Author(s):  
T.A. Syromyatnikova ◽  
A.M. Sikora ◽  
B.M. Ginzburg ◽  
S.Ya. Frenkel' ◽  
G.P. Vlasov ◽  
...  
Keyword(s):  
Crystalline Structure ◽  
Liquid Crystalline ◽  
Structure Of Solutions ◽  
Liquid Crystalline Structure
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