The first asymmetrically ??-polysubstituted porphyrin-based hexagonal columnar liquid crystal

2002 ◽  
pp. 2348-2349 ◽  
Author(s):  
M. Castella ◽  
F. L??pez-Calahorra ◽  
D. Velasco ◽  
H. Finkelmann
Keyword(s):  
Liquid Crystal ◽  
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

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

A Dendronized Cellulose Derivative and its Thermotropic Liquid Crystal and Lyotropic Cholesteric Liquid Crystal Behaviors

2011 ◽  
Vol 239-242 ◽  
pp. 2620-2623 ◽  
Author(s):  
Yan Ming Dong ◽  
Ya Qing Zhao ◽  
Er Man Zeng ◽  
Liu Lin Yang ◽  
Qiang Ge ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Ethyl Cellulose ◽  
Room Temperature ◽  
Cholesteric Liquid Crystal ◽  
Chloroform Solution ◽  
Lyotropic Liquid Crystal ◽  
Column Diameter ◽  
Thermotropic Liquid Crystal ◽  
Planar Texture ◽  
Hexagonal Columnar

A novel dendronized cellulose，ethyl cellulose grafted 3,4,5-tris[4-(dodecyloxy) benzyloxy] benzoate (EC-g-DOBOB), which is comprised of ethyl cellulose (EC) backbone with mesogenic moiety DOBOB (3,4,5-tris(4-(dodecyloxy)benzyloxy)benzoic acid) dendron grafted, was designed and synthesized. The structure of EC-g-DOBOB was investigated by means of FTIR, Both thermotropic liquid crystal and lyotropic liquid crystal behaviors of EC-g-DOBOB were studied by combination of DSC, POM and XRD. At room temperature EC-g-DOBOB demonstrated hexagonal columnar mesophase (Φh), with the column diameter 5.8 nm, besides it formed lyotropic cholesteric liquid crystal in concentrated chloroform solution with a planar texture.

Hexagonal columnar liquid crystal in the cells secreting spider silk

1999 ◽  
Vol 31 (6) ◽  
pp. 617-620 ◽  
Author(s):  
D. Knight ◽  
F. Vollrath
Keyword(s):  
Liquid Crystal ◽  
Spider Silk ◽  
Hexagonal Columnar

scholarly journals Using Deposition Rate and Substrate Temperature to Manipulate Liquid Crystal-Like Order in a Vapor-Deposited Hexagonal Columnar Glass

2021 ◽  
Vol 125 (10) ◽  
pp. 2761-2770
Author(s):  
Camille Bishop ◽  
Zhenxuan Chen ◽  
Michael F. Toney ◽  
Harald Bock ◽  
Lian Yu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Substrate Temperature ◽  
Deposition Rate ◽  
Hexagonal Columnar

Large ZnO Mesocrystals of Hexagonal Columnar Morphology Derived from Liquid Crystal Templates

2011 ◽  
Vol 94 (10) ◽  
pp. 3267-3275 ◽  
Author(s):  
Hui Li ◽  
Yu Zhang ◽  
Hongfei Liu ◽  
John Wang
Keyword(s):  
Liquid Crystal ◽  
Hexagonal Columnar
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