Structure-property relationships for the thermal phase behavior of discotic liquid crystals: the effect of branching and unsaturation in the side chains of disklike molecules

1991 ◽  
Vol 113 (23) ◽  
pp. 8577-8583 ◽  
Author(s):  
David M. Collard ◽  
C. Peter Lillya
Keyword(s):  
Liquid Crystals ◽  
Phase Behavior ◽  
Side Chains ◽  
Discotic Liquid Crystals ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Thermal Phase

Charge Transport Properties in Discotic Liquid Crystals:  A Quantum-Chemical Insight into Structure−Property Relationships

2004 ◽  
Vol 126 (10) ◽  
pp. 3271-3279 ◽  
Author(s):  
Vincent Lemaur ◽  
Demetrio A. da Silva Filho ◽  
Veaceslav Coropceanu ◽  
Matthias Lehmann ◽  
Yves Geerts ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Charge Transport ◽  
Transport Properties ◽  
Quantum Chemical ◽  
Discotic Liquid Crystals ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Insight Into

Phase Behavior of a New Class of Anthraquinone-Based Discotic Liquid Crystals

Langmuir ◽  
2017 ◽  
Vol 33 (48) ◽  
pp. 13849-13860 ◽  
Author(s):  
Joydip De ◽  
Santosh Prasad Gupta ◽  
Indu Bala ◽  
Sandeep Kumar ◽  
Santanu Kumar Pal
Keyword(s):  
Liquid Crystals ◽  
Phase Behavior ◽  
Discotic Liquid Crystals ◽  
New Class

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 Synthesis and Characterization of Photoluminescence Liquid Crystals Based on Flexible Chain-Bearing Pentafluorinated Bistolanes

Crystals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 603
Author(s):  
Shigeyuki Yamada ◽  
Masaya Sato ◽  
Tsutomu Konno
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Oxygen Atom ◽  
Liquid Crystalline ◽  
Color Change ◽  
Photophysical Properties ◽  
Structure Property ◽  
Flexible Chain ◽  
Structure Property Relationships ◽  
Chiral Nematic

The liquid-crystalline (LC) and photophysical properties of molecules are very sensitive to their electronic and molecular aggregate structures. Herein, to shed light on the structure–property relationships of pentafluorinated bistolane-based photoluminescence (PL) liquid crystals (PLLCs) previously reported by our group, we synthesized pentafluorinated bistolanes with variable flexible chains and evaluated their LC and photophysical properties. The incorporation of an oxygen atom (to afford a 2-methoxyethoxy unit) or an oxygen atom and a methyl group (to afford a 1-methoxyprop-2-oxy unit) into the flexible butoxy chain significantly decreased the temperature of the crystalline-to-LC phase transition, and a chiral nematic phase comprising helical molecular aggregates was observed for the chiral 1-methoxyprop-2-oxy group–bearing bistolane. The synthesized bistolanes exhibited strong blue PL in both solution and crystalline phases; the featuring PL characteristics were maintained in the LC phase (produced by the crystalline-to-LC phase transition) except for a slight PL color change. Thus, it was concluded that the PL behavior of pentafluorinated bistolanes can be modulated by the choice of a suitable flexible chain, and the obtained insights are believed to facilitate the application of PLLCs in thermosensing PL materials.

Discotic liquid crystals of transition metal complexes X. Phthalocyanine derivatives substituted withn-alkyloxyphenyl side chains

1991 ◽  
Vol 10 (3) ◽  
pp. 357-368 ◽  
Author(s):  
Kazuchika Ohta ◽  
Takuya Watanabe ◽  
Satoshi Tanak ◽  
Testsuya Fujimoto ◽  
Iwao Yamamoto ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Side Chains ◽  
Discotic Liquid Crystals
Sign in / Sign up

Export Citation Format

Share Document