Synthesis and properties of wholly aromatic phosphorus-containing thermotropic liquid crystal copolyesters with excellent fibre formation ability

2020 ◽  
pp. 1-9
Author(s):  
Peng Wei ◽  
Hejuan Lou ◽  
Wei Wang ◽  
Shaonan Geng ◽  
Yanping Wang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Thermotropic Liquid Crystal ◽  
Fibre Formation ◽  
Phosphorus Containing

Reversible microscale assembly of nanoparticles driven by the phase transition of a thermotropic liquid crystal

2017 ◽  
Author(s):  
Niamh Mac Fhionnlaoich ◽  
Stephen Schrettl ◽  
Nicholas B. Tito ◽  
Ye Yang ◽  
Malavika Nair ◽  
...  
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Self Assembly ◽  
Nematic Phase ◽  
Hierarchical Control ◽  
Building Blocks ◽  
Model System ◽  
Microscopic Level ◽  
Reversible Process ◽  
Thermotropic Liquid Crystal

The arrangement of nanoscale building blocks into patterns with microscale periodicity is challenging to achieve via self-assembly processes. Here, we report on the phase transition-driven collective assembly of gold nanoparticles in a thermotropic liquid crystal. A temperature-induced transition from the isotropic to the nematic phase leads to the assembly of individual nanometre-sized particles into arrays of micrometre-sized aggregates, whose size and characteristic spacing can be tuned by varying the cooling rate. This fully reversible process offers hierarchical control over structural order on the molecular, nanoscopic, and microscopic level and is an interesting model system for the programmable patterning of nanocomposites with access to micrometre-sized periodicities.

Inhomogeneous relaxation dynamics and phase behaviour of a liquid crystal confined in a nanoporous solid

Soft Matter ◽  
2015 ◽  
Vol 11 (16) ◽  
pp. 3176-3187 ◽  
Author(s):  
Sylwia Całus ◽  
Andriy V. Kityk ◽  
Manfred Eich ◽  
Patrick Huber
Keyword(s):  
Liquid Crystal ◽  
Dielectric Spectroscopy ◽  
Phase Behaviour ◽  
Relaxation Dynamics ◽  
Thermotropic Liquid Crystal ◽  
Structure And Dynamics

Dielectric spectroscopy reveals a radial partitioning in the structure and dynamics of a thermotropic liquid crystal confined in silica nanochannels.

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