Structure-property relationships in main chain liquid crystal polyesters with flexible spacers

1985 ◽  
Vol 72 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Robert W. Lenz
Keyword(s):  
Liquid Crystal ◽  
Main Chain ◽  
Structure Property ◽  
Structure Property Relationships

scholarly journals Synthesis of organic liquid crystals containing selectively fluorinated cyclopropanes

2020 ◽  
Vol 16 ◽  
pp. 674-680 ◽  
Author(s):  
Zeguo Fang ◽  
Nawaf Al-Maharik ◽  
Peer Kirsch ◽  
Matthias Bremer ◽  
Alexandra M Z Slawin ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Thermodynamic Properties ◽  
Organic Liquid ◽  
Dielectric Anisotropy ◽  
Structure Property ◽  
Structure Property Relationships

This paper describes the synthesis of a series of organic liquid crystals (LCs) containing selectively fluorinated cyclopropanes at their termini. The syntheses used difluorocarbene additions to olefin precursors, an approach which proved straightforward such that these liquid crystal candidates could be efficiently prepared. Their physical and thermodynamic properties were evaluated and depending on individual structures, they either displayed positive or negative dielectric anisotropy. The study gives some guidance into effective structure–property relationships for the design of LCs containing selectively fluorinated cyclopropane motifs.

scholarly journals Heterometal Grafted metalla-ynes and Poly(metalla-ynes): A Review on Structure–Property Relationships and Applications

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3654
Author(s):  
Rayya A. Al-Balushi ◽  
Ashanul Haque ◽  
Idris J. Al-Busaidi ◽  
Houda Al-Sharji ◽  
Muhammad S. Khan
Keyword(s):  
Physical Properties ◽  
Main Chain ◽  
Functional Materials ◽  
Photo Luminescence ◽  
Structural Features ◽  
Side Chain ◽  
Structure Property ◽  
Molecular Scaffolds ◽  
Structure Property Relationships ◽  
Rigid Rod

Metalla-ynes and poly(metalla-ynes) have emerged as unique molecular scaffolds with fascinating structural features and intriguing photo-luminescence (PL) properties. Their rigid-rod conducting backbone with tunable photo-physical properties has generated immense research interests for the design and development of application-oriented functional materials. Introducing a second d- or f-block metal fragment in the main-chain or side-chain of a metalla-yne and poly(metalla-yne) was found to further modulate the underlying features/properties. This review focuses on the photo-physical properties and opto-electronic (O-E) applications of heterometal grafted metalla-ynes and poly(metalla-ynes).

Structure–property relationships in segmented polyurethanes with metal chelates in the main chain

2000 ◽  
Vol 36 (6) ◽  
pp. 1113-1126 ◽  
Author(s):  
G. Georgoussis ◽  
A. Kanapitsas ◽  
P. Pissis ◽  
Yu.V. Savelyev ◽  
V.Ya. Veselov ◽  
...  
Keyword(s):  
Main Chain ◽  
Metal Chelates ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Segmented Polyurethanes

The Design, Synthesis and Structure-Property Relationships of Ferroelectric and Antiferroelectric Liquid Crystal Materials

2002 ◽  
Vol 276 (1) ◽  
pp. 219-237 ◽  
Author(s):  
Michael Hird ◽  
John W. Goodby ◽  
Paul Hindmarsh ◽  
Robert A. Lewis ◽  
Kenneth J. Toyne
Keyword(s):  
Liquid Crystal ◽  
Structure Property ◽  
Design Synthesis ◽  
Structure Property Relationships ◽  
Liquid Crystal Materials

scholarly journals Understanding structure–property relationships of main chain cyclopropane in linear polyesters

2020 ◽  
Vol 11 (39) ◽  
pp. 6251-6258
Author(s):  
Connor J. Stubbs ◽  
Andrew P. Dove
Keyword(s):  
Main Chain ◽  
Effective Means ◽  
Polymer Materials ◽  
Structure Property ◽  
Bulk Properties ◽  
Rigid Ring ◽  
Structure Property Relationships ◽  
Ring Structures

Rigid ring structures have gained increasing interest in the polymer materials community as an effective means to manipulate bulk properties. Here, we investigate structure–property relationships of the smallest ring: cyclopropane.

scholarly journals Synthesis, characterization and structure-property relationships of 1,3-bis(5-substituted-1,3,4-oxadiazol-2-yl)benzenes

2019 ◽  
Author(s):  
Afef Mabrouki ◽  
Malek Fouzai ◽  
Armand Soldera ◽  
Abdelkader Kriaa ◽  
ahmed hedhli
Keyword(s):  
Differential Scanning Calorimetry ◽  
Liquid Crystal ◽  
Dipole Moments ◽  
Structure Property ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Rigid Core ◽  
X Ray ◽  
Structure Property Relationships ◽  
Crystal Properties

Two series containing 1,3-bis(1,3,4-oxadiazol-2-yl)benzene as a rigid core (RC) and alkyl or perfluoroalkyl as terminal chains were synthesized and characterized. Liquid Crystal properties of the synthesized compounds have been investigated by Polarizing Optical Microscopy, Differential Scanning Calorimetry and X-ray Diffraction techniques. Conformation effects of the synthesized products on the dipole moments were also investigated.

Sign in / Sign up

Export Citation Format

Share Document