Self-Assembly of a Mesogenic Polyamide: Induction and Significant Stabilization of a Liquid-Crystalline Phase through Complexation of a Phenylbenzoic Acid with a Polymer Backbone Derived from 2,6-Bis(amino)pyridine Units

1997 ◽  
Vol 36 (15) ◽  
pp. 1617-1618 ◽  
Author(s):  
Takashi Kato ◽  
Yasuo Kubota ◽  
Toshiyuki Uryu ◽  
Seiji Ujiie
Keyword(s):  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase ◽  
Polymer Backbone

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

The Self-Assembly of a Lipophilic Deoxyguanosine Derivative and the Formation of a Liquid-Crystalline Phase in Hydrocarbon Solvents

1998 ◽  
Vol 81 (11) ◽  
pp. 2078-2092 ◽  
Author(s):  
Giovanni Gottarelli ◽  
Stefano Masiero ◽  
Elisabetta Mezzina ◽  
Gian Piero Spada ◽  
Paolo Mariani ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
The Self ◽  
Liquid Crystalline Phase ◽  
Hydrocarbon Solvents

Side Chain Liquid Crystalline Thermoplastic Elastomers for Actuator and Electromechanical Applications

2005 ◽  
Vol 889 ◽  
Author(s):  
Eric Verploegen ◽  
LaRuth C. McAfee ◽  
Lu Tian ◽  
Darren Verploegen ◽  
Paula T. Hammond
Keyword(s):  
Block Copolymer ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Thermoplastic Elastomer ◽  
Thermoplastic Elastomers ◽  
Liquid Crystalline Phase ◽  
Transverse Orientation ◽  
Isotropic Liquid ◽  
Polymer Backbone ◽  
Spacer Length

ABSTRACTThe synthesis of a polystyrene-b-polyvinylmethylsiloxane-b-polystyrene diblock and triblock copolymer functionalized with liquid crystals exhibiting a smectic C* phase on the PVMS central block is described. The synthetic route is based on the anionic polymerization of styrene and trimethyltrivinylsiloxane monomers and the functionalization of resulting triblock copolymers. The resulting polymer can self assemble into a thermoplastic elastomer where the high Tg styrene blocks serve as physical crosslinks for a low Tg siloxane block. The presence of a smectic liquid crystalline phase and the block copolymer mesophase are observed across various temperature ranges depending on the length of the spacer connecting the liquid crystalline moiety to the polymer backbone. The influence of mechanical deformation upon the morphologies of the liquid crystalline and block copolymer mesophases was investigated. The interactions between the smectic LC and the block copolymer morphologies and their influence upon their respective orientations in response to shear fields are detailed. The parallel-transverse orientation of the hexagonally close packed (HCP) cylinders of the block copolymer morphology and the smectic liquid crystalline phase, respectively, was observed for melt fiber drawn samples. However, the transverse-perpendicular orientation was observed for liquid crystalline block copolymers that experienced oscillatory shear. The transverse orientation of HCP cylinders was observed while shearing took place above the smectic to isotropic transition temperature, indicating that the presence of an isotropic liquid crystalline phase alters the orientation of the block copolymer morphology. Additionally, it was found that the spacer length was a key factor in the clearing points for the smectic liquid crystalline phase, as well as significantly influencing the nanophase segregation of the block copolymer.

Self Assembly and Formation of Bi-continuous Cubic Liquid Crystalline Phase

2014 ◽  
Vol 31 (3) ◽  
pp. 478-485
Author(s):  
In-Young Kim ◽  
◽  
Hwa-Sook Choi ◽  
So-Ra Lee ◽  
Seong-Ho Choi
Keyword(s):  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Liquid Crystalline Phase

scholarly journals The Monoglyceride Content Affects the Self-Assembly Behavior, Rheological Properties, Syringeability, and Mucoadhesion of In Situ–Gelling Liquid Crystalline Phase

2016 ◽  
Vol 105 (8) ◽  
pp. 2355-2364 ◽  
Author(s):  
Kariane M. Nunes ◽  
Cristian C.C. Teixeira ◽  
Renata C.K. Kaminski ◽  
Victor H.V. Sarmento ◽  
Renê O. Couto ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
The Self ◽  
Liquid Crystalline Phase ◽  
Assembly Behavior ◽  
In Situ Gelling

Dendritic and Multipodal Liquid-Crystalline Materials based on Silsesquioxane and Siloxane Cores

2000 ◽  
Vol 628 ◽  
Author(s):  
Georg H. Mehl ◽  
Ralf Elsäβer ◽  
Keith J. Shepperson ◽  
Adam Thornton ◽  
John W. Goodby
Keyword(s):  
Crystalline Phase ◽  
Self Assembly ◽  
Liquid Crystalline ◽  
Phase Behaviour ◽  
Liquid Crystalline Phase ◽  
Stability Range ◽  
Inorganic Hybrid ◽  
Crystalline Materials ◽  
Liquid Crystalline Materials ◽  
Made In

ABSTRACTIn recent years great advances have been made in the synthesis of organic-inorganic hybrid materials, whether they are oligomeric, multipodal, polymeric or dendritic in structure. Of particular interest are liquid-crystalline systems, as the control of the soft self-assembly behaviour of these systems allows for the addressing of the macroscopic properties of these materials.The investigations of silsesquioxane and siloxane cores decorated with suitable organic groups of linear and branched structures leading to liquid-crystalline phase behaviour is presented. The structural and chemical features which govern the phase behaviour will be discussed. Important features are the size, geometry, structure and flexibility of the inorganic core, the flexibility, branching and length of the spacer linking inorganic cores and the organic groups, which promote liquid-crystalline phase behaviour. The effects of a variety of mesogenic structures on the liquid-crystalline phase behaviour and stability range will be discussed.

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