Twist Grain Boundary Liquid-Crystalline Phases under the Effect of the Magnetic Field: A Complete2H and13C NMR Study

ChemPhysChem ◽  
2008 ◽  
Vol 9 (4) ◽  
pp. 556-566 ◽  
Author(s):  
Valentina Domenici ◽  
Carlo Alberto Veracini ◽  
Vladimira Novotná ◽  
Ronald Y. Dong
Keyword(s):  
Magnetic Field ◽  
Grain Boundary ◽  
Liquid Crystalline ◽  
Crystalline Phases ◽  
Nmr Study ◽  
Liquid Crystalline Phases ◽  
The Magnetic Field

Structure of liquid-crystalline phases formed by N -acetyl- L -glutamic acid oligomeric benzyl esters - 2 H NMR study

2001 ◽  
Vol 279 (11) ◽  
pp. 1144-1148
Author(s):  
A. Yoshino ◽  
M. Ishida ◽  
H. Yuki ◽  
H. Okabayashi ◽  
H. Masuda ◽  
...  
Keyword(s):  
Glutamic Acid ◽  
Liquid Crystalline ◽  
Crystalline Phases ◽  
H Nmr ◽  
Nmr Study ◽  
Liquid Crystalline Phases ◽  
Benzyl Esters ◽  
Structure Of Liquid

Induced frustrated twist grain boundary liquid crystalline phases in binary mixtures of achiral hockey stick-shaped and chiral rod-like materials

2019 ◽  
Vol 7 (34) ◽  
pp. 10530-10543 ◽  
Author(s):  
Susanta Chakraborty ◽  
Malay Kumar Das ◽  
Alexej Bubnov ◽  
Wolfgang Weissflog ◽  
Dorota Węgłowska ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Grain Boundary ◽  
Binary Mixtures ◽  
Liquid Crystalline ◽  
Ferroelectric Liquid Crystal ◽  
Crystalline Phases ◽  
Hockey Stick ◽  
Liquid Crystalline Phases

Induction of TGB phases in binary mixtures of hockey stick-shaped and chiral ferroelectric liquid crystal compounds.

Extraordinary magnetic field effects on the LC phases of homochiral and racemic 4-cyanoresorcinol-based diamagnetic bent-core mesogens

2021 ◽  
Vol 9 (6) ◽  
pp. 1895-1910
Author(s):  
Hale Ocak ◽  
Belkız Bilgin Eran ◽  
Sevgi Nuray ◽  
Aykun Özkonstanyan ◽  
Silvio Poppe ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Liquid Crystalline ◽  
Racemic Mixture ◽  
Magnetic Field Effects ◽  
Chiral Compound ◽  
Crystalline Phases ◽  
Layer Spacing ◽  
Field Effects ◽  
Liquid Crystalline Phases

A huge effect of a magnetic field on the layer spacing of smectic and polar smectic liquid crystalline phases of a diamagnetic bent-core mesogen is reported, which is opposite for the uniformly chiral compound and its racemic mixture.

scholarly journals Twist grain boundary (TGB) states of chiral liquid crystalline bent-core mesogens

2015 ◽  
Vol 51 (35) ◽  
pp. 7512-7515 ◽  
Author(s):  
Hale Ocak ◽  
Belkız Bilgin-Eran ◽  
Dilek Güzeller ◽  
Marko Prehm ◽  
Carsten Tschierske
Keyword(s):  
Grain Boundary ◽  
Liquid Crystalline ◽  
Crystalline Phases ◽  
Liquid Crystalline Phases

Chiral 4-cyanoresorcinol derived bent-core molecules form liquid crystalline phases with helically deformed layers representing TGBA and TGBC-like structures.

Deuteron NMR Lineshapes in the Antiferroelectric Liquid Crystalline Phase of MHPOBC

2000 ◽  
Vol 55 (1-2) ◽  
pp. 298-300
Author(s):  
R. Blinc ◽  
A. Gregorovič ◽  
B. Zalar
Keyword(s):  
Magnetic Field ◽  
Crystalline Phase ◽  
Nmr Spectra ◽  
Liquid Crystalline ◽  
Translational Diffusion ◽  
Liquid Crystalline Phase ◽  
Magnetic Field Direction ◽  
Liquid Crystalline Phases ◽  
The Magnetic Field ◽  
Deuteron Nmr

The deuteron NMR lineshapes in the tilted antiferroeelectric smectic liquid crystalline phases are evaluated for: i) the case of a discrete short pitch modulation P1 = N • d where N = 2,3,4, ii) for a superposition of two modulations p1 and p0 where p0 ≫p1 as well as iii) for the case where in addition rapid molecular exchange between adjacent layers takes place due to translational diffusion. The results are compared with the experimental deuteron NMR spectra of α-CD2 deuterated MHPOBC in the Sm C*A phase measured at different angles between the magnetic field direction and the normals to the smectic layers. The alternating tilt structure of the Sm C*A phase is confirmed

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