scholarly journals Effects of alkyl chain length on properties of N-alkyl-N-methylpyrrolidinium fluorohydrogenate ionic liquid crystals

2012 ◽  
Vol 135 ◽  
pp. 344-349 ◽  
Author(s):  
Fei Xu ◽  
Shohei Matsubara ◽  
Kazuhiko Matsumoto ◽  
Rika Hagiwara
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Ionic Liquid Crystals

Pyridinium salt liquid crystals Effect of mesogen extension and alkyl chain length

1995 ◽  
Vol 18 (3) ◽  
pp. 475-482 ◽  
Author(s):  
Maryam Tabrizian ◽  
Armand Soldera ◽  
Michel Couturier ◽  
C. Geraldine Bazuin
Keyword(s):  
Liquid Crystals ◽  
Chain Length ◽  
Alkyl Chain ◽  
Pyridinium Salt ◽  
Alkyl Chain Length

scholarly journals Oxadiazolyl-Pyridinium as Cationic Scaffold for Fluorinated Ionic Liquid Crystals

2021 ◽  
Vol 11 (21) ◽  
pp. 10347
Author(s):  
Melina S. Weber ◽  
Margit Schulze ◽  
Giuseppe Lazzara ◽  
Antonio Palumbo Piccionello ◽  
Andrea Pace ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Alkyl Chain ◽  
Scanning Calorimetry ◽  
New Class ◽  
Structural Variables ◽  
Ionic Liquid Crystals ◽  
Thermotropic Properties

The synthesis and characterization of a new class of 1,2,4-oxadiazolylpyridinium as a cationic scaffold for fluorinated ionic liquid crystals is herein described. A series of 12 fluorinated heterocyclic salts based on a 1,2,4-oxadiazole moiety, connected through its C(5) or C(3) to an N-alkylpyridinium unit and a perfluoroheptyl chain, differing in the length of the alkyl chain and counterions, has been synthesized. As counterions iodide, bromide and bis(trifluoromethane)sulfonimide have been considered. The synthesis, structure, and liquid crystalline properties of these compounds are discussed on the basis of the tuned structural variables. The thermotropic properties of this series of salts have been investigated by differential scanning calorimetry and polarized optical microscopy. The results showed the existence of an enantiotropic mesomorphic smectic liquid crystalline phase for six bis(trifluoromethane)sulfonimide salts.

The effect of alkyl chain length on the structure and thermodynamics of protic–aprotic ionic liquid mixtures: a molecular dynamics study

2018 ◽  
Vol 20 (15) ◽  
pp. 9938-9949 ◽  
Author(s):  
Borja Docampo-Álvarez ◽  
Víctor Gómez-González ◽  
Trinidad Méndez-Morales ◽  
Julio R. Rodríguez ◽  
Oscar Cabeza ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chain Length ◽  
Alkyl Chain ◽  
Molecular Complexes ◽  
Liquid Mixtures ◽  
Alkyl Chain Length ◽  
Ideal Behavior

Mixtures of protic and aprotic ionic liquids exhibit non-ideal behavior with increasing alkyl chain length, caused by the formation of molecular complexes.

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