Journal ArticleDOI
Ionic interaction of tri-armed structure based on benzene ring: synthesis and characterization
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In this article, a tri-armed compound was synthesized successfully through cross-coupling, and the compound was mixed with 4-(dodecyloxy)benzoic acid (4-DBA) with 1:1 ratio to produce an organic salt through hydrogen bonding.Abstract:
Liquid crystalline is a state of matter which combines the properties of liquid and a crystalline solid. Ionic liquid crystals are a new class of materials which exhibit phase transition at low temperature. A new structure was synthesized based on a benzene ring carrying three armed, two arms of triazine ring and the third arm is phenoxy benzene. The presence of alkyl chain groups on the periphery reduced the mesophase transitions which are desirable for low-temperature applications of liquid crystals. The substitution was achieved efficiently by Sonogashira coupling. The tri-armed compound was synthesized successfully through cross-coupling. However, it was oily and no transition phase was observed. Therefore, to increase the liquid crystal possibility, the compound was mixed with 4-(dodecyloxy)benzoic acid (4-DBA) with 1:1 ratio to produce an organic salt through hydrogen bonding. The organic salt obtained by ionic interaction between the tri-armed compound and 4-DBA exhibited a phase transition at low temperature. However, ionic liquid crystals are important class of mesomorphic materials and have considered as sealants due to their very low vapour pressure which demonstrated a proficient electrolyte systems for their anisotropic phase such as high ionic conductivity and diffusion along with excellent thermal stability. All the intermediate compounds and final compounds were confirmed by spectroscopic techniques (1H NMR, 13C NMR, FT-IR, and HRMS).read more
Citations
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Comprehensive Review on the Bis–heterocyclic Compounds and their Anticancer Efficacy
Mohammed Hadi Ali Al-Jumaili,Anas Abdullah Hamad,Heba E. Hashem,Abdul Hussein,Mohammed Jobair Muhaidi,Mohammad Abdaljabbar Ahmed,Ali Hussein Alwan Albanaa,Farhan Siddique,E. O. A. Bakr +8 more
TL;DR: A review of bis-heterocyclic active compounds and their beneficial functions as drug targets in cancer therapy and chemoprevention is presented in this article , which aims to summarize different bishetercycle active compounds.
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Synthesis and characterization of newly syringaldehyde based chalcone liquid crystals
TL;DR: The mesomorphic properties of calamitic-shaped homologues series were studied by polarized optical microscope and differential scanning calorimetry as discussed by the authors , and the results indicated that the stability and type of the mesophase are dependent on the linking group with the addition of variable side alkoxy group on the terminal end group.
Journal ArticleDOI
Synthesis and properties of fluorinated terphenyl liquid crystals utilizing 5,6-dihydro-4H-cyclopenta[b]thiophene as core unit
Danyang Wan,Zhaoyi Che,Lingchao Mo Mo,Minggang Hu,Juanli Li,Fengjiao Shi,Zhongwei An,Jian Li +7 more
TL;DR: In this paper , 5,6-dihydro-4 H -cyclopenta[b ]thiophene was incorporated into fluorinated terphenyl and six novel liquid crystals obtained.
Journal ArticleDOI
Hydrogen-bonded ionic liquid crystals based on multi-armed structure: synthesis and characterization
Journal ArticleDOI
Probing New DABCO-F Based Ionic Liquids as Catalyst in Organic Synthesis
Marium Ishtiaq,Maria Aqeel Khan,Shakil Ahmed,Shujaat Ali,Mariya al-Rashida,Shafia Iftikhar,Syed Tarique Moin,Abdul Hameed +7 more
TL;DR: In this paper , 1,4-diazabicyclo[2.2] octane (DABCO)-based ionic liquids with fluoride anion were synthesized and characterized.
References
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Journal ArticleDOI
The phase behaviour of 1-alkyl-3-methylimidazolium tetrafluoroborates; ionic liquids and ionic liquid crystals
TL;DR: In this article, 1-alkyl-3-methylimidazolium tetrafluoroborate (TFLB) is described as an isotropic ionic liquid with an enantiotropic smectic A mesophase.
Journal ArticleDOI
Functional Materials: From Hard to Soft Porous Frameworks
TL;DR: Possibility for introducing organic groups that exhibit chemical and/or physical functions into porous materials will be described, with a focus on the incorporation of such functional groups as a supporting part of the pore walls.
Book
Liquid Crystal Elastomers
Mark Warner,Eugene M. Terentjev +1 more
TL;DR: In this article, a bird's eye view of liquid crystal elastomers is presented, showing that the elasticity of liquid crystals can be classified into three classes: soft elasticity, cholesteric elastomer, and rubber elasticity.
Journal ArticleDOI
Supramolecular hydrogen-bonded liquid crystals
TL;DR: The role of hydrogen-bonding interactions in the formation and/or stabilization of liquid crystalline phases has been recognized in recent years and significant work has been conducted as discussed by the authors, with the aim of establishing, in the first place, the diversity of organic compounds that can be used as building elements in the process of liquid crystal formation.