New Insight into Photoalignment of Liquid Crystals on Coumarin-Containing Polymer Films

2006 ◽  
Vol 39 (11) ◽  
pp. 3817-3823 ◽  
Author(s):  
Chunki Kim ◽  
Anita Trajkovska ◽  
Jason U. Wallace ◽  
Shaw H. Chen
Keyword(s):  
Liquid Crystals ◽  
Polymer Films ◽  
Insight Into

scholarly journals Conjugated Polymer Films Having a Uniaxial Molecular Orientation and Network Structure Prepared by Electrochemical Polymerization in Liquid Crystals

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2425
Author(s):  
Jiuchao Dong ◽  
Shigeki Nimori ◽  
Hiromasa Goto
Keyword(s):  
Liquid Crystals ◽  
Network Structure ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Main Chain ◽  
Electrochemical Polymerization ◽  
Electronic Devices ◽  
New Method ◽  
Magnetic Orientation ◽  
Organic Electronic Devices

A new method for fabricating conjugated polymer films was developed using electrochemical polymerization in liquid crystals and magnetic orientation. A uniaxial main chain orientation and a crosslinked network structure were achieved with this method. By employing eight types of monomers, the influence of the crosslinking for the film was investigated. The crosslinking was found to improve the solvent resistance of the conjugated polymer films. This new method is expected to be useful in various applications, such as high-powered organic electronic devices with durability.

Microphase-separated multicontinuous phase in low-molecular-mass thermotropic liquid crystals

2009 ◽  
Vol 81 (10) ◽  
pp. 1783-1798 ◽  
Author(s):  
Kazuya Saito
Keyword(s):  
Liquid Crystals ◽  
Thermodynamic Potential ◽  
Alkyl Chain ◽  
Configurational Entropy ◽  
Lyotropic Liquid Crystals ◽  
Chemical Thermodynamics ◽  
Molecular Core ◽  
Thermotropic Liquid Crystals ◽  
Simple Systems ◽  
Insight Into

Extensive application of chemical thermodynamics to exotic aggregation formed in thermotropic liquid crystals is briefly described. Through thermodynamic analyses and considerations of experimental results on liquid crystals, the unexpected sharing of common properties by thermo- and lyotropic liquid crystals is demonstrated. In some thermotropic liquid crystals, the terminal alkyl chain attached to the molecular core is highly disordered, as indicated by the magnitude of configurational entropy. The molten chain serves as intramolecular solvent (self-solvent), as evidenced by the close similarity between phase diagrams against chain length and composition in the binary system with n-alkane. These facts lead to the quasi-binary picture of thermotropic liquid crystals. Consideration of the thermodynamic potential expanded in terms of density fluctuation gives a new insight into the multicontinuous phases formed in simple systems consisting of anisotropic, rodlike particles.

scholarly journals Static and dynamic electro-optical properties of liquid crystals mediated by ferroelectric polymer films

RSC Advances ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 1889-1898 ◽  
Author(s):  
Y. A. Garbovskiy ◽  
D. R. Evans ◽  
P. P. Banerjee ◽  
A. V. Glushchenko
Keyword(s):  
Optical Properties ◽  
Fractal Dimension ◽  
Liquid Crystals ◽  
Polymer Films ◽  
Switching Time ◽  
Ferroelectric Films ◽  
Ferroelectric Polymer

Liquid crystals (LC) can reveal the fractal dimension of multi-domain ferroelectric films (FF) while these films can control the switching time of FF–LC hybrids.

Insight into Out‐of‐Layer Fluctuations in the Smectic A Stability of 3,5‐Diarylisoxazole Liquid Crystals

ChemPhysChem ◽  
2020 ◽  
Vol 21 (13) ◽  
pp. 1408-1419
Author(s):  
Eric S. Sales ◽  
Gabriel M. Santos ◽  
Richard J. Mandle ◽  
Wallison C. Costa ◽  
Ivan H. Bechtold ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Smectic A ◽  
Insight Into

LIGHT-INDUCED MODIFICATION OF KINETIC MOLECULAR PROPERTIES: ENHANCEMENT OF OPTICAL KERR EFFECT IN ABSORBING LIQUIDS, PHOTOINDUCED TORQUE AND MOLECULAR MOTORS IN DYE-DOPED NEMATICS

2000 ◽  
Vol 09 (02) ◽  
pp. 157-182 ◽  
Author(s):  
M. KREUZER ◽  
L. MARRUCCI ◽  
D. PAPARO
Keyword(s):  
Liquid Crystals ◽  
Molecular Motors ◽  
Kerr Effect ◽  
Optical Nonlinearity ◽  
Molecular Structures ◽  
Molecular Properties ◽  
Main Role ◽  
Theoretical Results ◽  
Insight Into ◽  
Dye Molecule

In this paper we review some experimental and theoretical results on the enhancement of orientational optical nonlinearities observed in dye-doped liquids and liquid crystals. We argue that this enhancement is derived from a photoinduced modification of kinetic molecular properties. Moreover we highlight an analogy between the mechanism of this effect in nematic liquid crystals and the working principles of "molecular motors". This analogy helps us to refine the understanding of this effect and to identify the molecular parameters which play the main role. Finally we review some recent experimental results about the dependence of the optical nonlinearity enhancement on the detailed dye and host molecular structures. These results provide some insight into the light-induced phenomena taking place inside a dye molecule.

Time-resolved vibrational spectroscopy of liquid crystals and polymer films using step-scan 2-D FTIR

1992 ◽  
Author(s):  
Vasilis G. Gregoriou ◽  
James L. Chao ◽  
Hirokazu Toriumi ◽  
Curtis A. Marcott ◽  
Isao Noda ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Vibrational Spectroscopy ◽  
Polymer Films ◽  
Time Resolved

Fluorination of supramolecular liquid crystals – tuning tool and analytical probe

2017 ◽  
Vol 5 (9) ◽  
pp. 2235-2239 ◽  
Author(s):  
Matthias Spengler ◽  
Ronald Y. Dong ◽  
Carl A. Michal ◽  
Michael Pfletscher ◽  
Michael Giese
Keyword(s):  
Liquid Crystals ◽  
Solid State ◽  
Solid State Nmr ◽  
Molecular Alignment ◽  
Nmr Studies ◽  
The Impact ◽  
Insight Into ◽  
Hydrogen Bonded

The impact of fluorination on the properties of photo-responsive hydrogen-bonded liquid crystals is reported and19F solid-state NMR studies provide insight into the molecular alignment of the assemblies.

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