Eutectic Mesophase Transitions and Induced Crystalline Phase in Mixtures of Hexagonal Columnar Liquid Crystal and Mesogenic Diacrylate

2010 ◽  
Vol 114 (41) ◽  
pp. 13031-13041 ◽  
Author(s):  
Tsang-Min Huang ◽  
Raisa V. Talroze ◽  
Thein Kyu
Keyword(s):  
Liquid Crystal ◽  
Crystalline Phase ◽  
Hexagonal Columnar

Self-Assembly-Induced Supramolecular Hexagonal Columnar Liquid Crystalline Phase Using Laterally Attached Nonmesogenic Templates

2000 ◽  
Vol 33 (17) ◽  
pp. 6315-6320 ◽  
Author(s):  
Huilin Tu ◽  
Xinhua Wan ◽  
Yuxiang Liu ◽  
Xiaofang Chen ◽  
Dong Zhang ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase ◽  
Hexagonal Columnar

scholarly journals Fluorescein-Bridged Perylene Bisimide Dimer for Use as Liquid Crystal: Studies on Mesomorphic and Fluorescence Properties

2021 ◽  
Author(s):  
Mingguang Zhu ◽  
Meihui Chen ◽  
Hongyu Guo ◽  
Fafu Yang
Keyword(s):  
Energy Transfer ◽  
Liquid Crystal ◽  
Fluorescence Resonance Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Fluorescence Properties ◽  
Strong Fluorescence ◽  
Perylene Bisimide ◽  
Symmetric Structure ◽  
Hexagonal Columnar

Abstract A novel fluorescein-bridged perylene bisimide (PBI) dimer for liquid crystal (LC) with geometrically symmetric structure was developed. The mesomorphic results indicated that the energetically stable and unstable conformers of fluorescein fragments could lead to the transformation of mesophases from a hexagonal columnar mesophase to an uncertain phase at 136.9 °C in heating, whilst a stable hexagonal columnar mesophase maintained between 175.6 °C and 58.6 °C in cooling. The selectively excited fluorescence characters in THF solution demonstrated that the fluorescence resonance energy transfer (FRET) effect between fluorescein fragments and PBI unites could provide a means to effectively impose strong fluorescence of the dimeric PBIs modified with suitable chromophore at the N-imide position, which alternatively serves as a platform for the further study of multi-functional PBI-based LCs.

Rayleigh scattering in hexagonal columnar liquid crystal subjected to oscillatory shear

2007 ◽  
Author(s):  
F. Sanaa^ ◽  
M. Gharbia ◽  
Mourad Telmini ◽  
Najeh Thabet Mliki ◽  
Ezeddine Sediki
Keyword(s):  
Liquid Crystal ◽  
Rayleigh Scattering ◽  
Oscillatory Shear ◽  
Hexagonal Columnar

ChemInform Abstract: Ferroelectric Liquid Crystal with Extreme Polarization: X-Ray Structure Analysis of the Crystalline Phase.

ChemInform ◽  
1990 ◽  
Vol 21 (27) ◽  
Author(s):  
H. M. COLQUHOUN ◽  
C. C. DUDMAN ◽  
C. A. O'MAHONEY ◽  
G. C. ROBINSON ◽  
D. J. WILLIAMS
Keyword(s):  
Liquid Crystal ◽  
Structure Analysis ◽  
Crystalline Phase ◽  
Ferroelectric Liquid Crystal ◽  
X Ray

The First Asymmetrically β-Polysubstituted Porphyrin-Based Hexagonal Columnar Liquid Crystal.

ChemInform ◽  
2003 ◽  
Vol 34 (9) ◽  
Author(s):  
M. Castella ◽  
F. Lopez-Calahorra ◽  
D. Velasco ◽  
H. Finkelmann
Keyword(s):  
Liquid Crystal ◽  
Hexagonal Columnar

Direct layer-by-layer freezing of a smectic liquid-crystal surface into the crystalline phase

2001 ◽  
Vol 64 (5) ◽  
Author(s):  
Chih-Yu Chao ◽  
Yi-Hsin Liu ◽  
Tung-Cheng Pan ◽  
Bor-Ning Chang ◽  
John T. Ho
Keyword(s):  
Liquid Crystal ◽  
Crystalline Phase ◽  
Crystal Surface ◽  
Layer By Layer ◽  
Smectic Liquid Crystal

Phase Diagram of Thermotropic Liquid Crystal Including Negative Pressure Region Generated in Metal Berthelot Tube

2011 ◽  
Vol 181-182 ◽  
pp. 22-25
Author(s):  
Kazuki Hiro ◽  
Tadahiro Wada
Keyword(s):  
Phase Diagram ◽  
Phase Transitions ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Crystalline Phase ◽  
Negative Pressure ◽  
Metal Tube ◽  
Thermotropic Liquid Crystal ◽  
Thermotropic Liquid Crystals ◽  
Pressure Region

Phase diagrams including absolute negative pressure regions of thermotropic liquid crystals give useful information on science and technology. A phase diagram was depicted for ca. 40mg of a thermotropic liquid crystal in a pressure vs. temperature (P-T) plane by the Berthelot method using a metal tube. N-I phase transitions occurred even under-10MPa, and a polymorphism of the crystalline phase was observed.

Chiroptical switching caused by crystalline/liquid crystalline phase transition of a chiral bowl-shaped molecule

2016 ◽  
Vol 52 (24) ◽  
pp. 4585-4588 ◽  
Author(s):  
Masaki Yamamura ◽  
Kimiya Sukegawa ◽  
Daichi Okada ◽  
Yohei Yamamoto ◽  
Tatsuya Nabeshima
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Crystalline Phase ◽  
Phosphorus Atom ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase ◽  
Alkyl Chains ◽  
Crystalline Phase Transition

The liquid crystal of a chiral bowl-shaped molecule having a central-phosphorus atom and long alkyl chains was developed.

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