Observation of induced new smectic phase in supramolecular hydrogen bonded liquid crystals between mesogenic and non-mesogenic aliphatic compounds

Sundaram, S.; Subhasri, P.; Rajasekaran, T.; Jayaprakasam, R.; Senthil, T.S.; Vijayakumar, V. N.

doi:10.1080/00150193.2017.1328245

Cited by 10 publications

(3 citation statements)

References 42 publications

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“…Supramolecular liquid crystals [21] are molecular complexes that resulted from interaction between independent species via hydrogen bonding. Also, they are able to exist in mesophase due to their binding method electron-rich hydrogen atoms, and the system can be considered as self-complementary [22]. According to above study, we aim to synthesize tri armed triazine derivatives based on six-memberedring of benzene via cross coupling of Negishi [23] as selective C-C bond formation and study their properties as liquid crystalline phase.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of New 1,3,5 -Triazine Derivatives Based on Benzene Ring

Shallal¹,

Hussien²

2021

Egypt. J. Chem.

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Liquid crystal materials have a number of ordinary uniqueness such as mechanical or electro-optical properties. New triazines derivatives compound was obtained starting from 1,3,5-triazine and 1,3,5-trichlorobenzene. The synthesized compound consists of three-armed based on benzene core built up via cross coupling reaction. The substitution was achieved efficiently at appropriate temperature under the argon atmosphere by cross coupling. However, the two armed of 2,4-bis(dodecyloxy)ethynyltriazine on the periphery are considered for liquid crystal application. The target compound did not exhibit a transition phase in its pure state but, after ionic interaction with 4-DBA which already possess a phase transition, it showed a phase transition and liquid crystal properties. We study the liquid crystal properties of obtained organic salts after ionic interaction through hydrogen bonding via methods of OPM "optical polarizing microscope" and DSC "differential calorimetric scanning". After purification with column chromatography then confirmed their structures by analysis of spectroscopy (MS, NMR, and FT-IR).

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of New 1,3,5 -Triazine Derivatives Based on Benzene Ring

Shallal¹,

Hussien²

2021

Egypt. J. Chem.

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“…Supramolecular liquid crystals (LCs), obtained via intermolecular hydrogen bonding have attracted considerable attention due to their ability of existence of the mesophase. In these cases, the hydrogen bonded complexes are formed between two identical molecules, and the system can be considered as self-complementary [28].…”

Section: ■ Introductionmentioning

confidence: 99%

“…C-NMR:(173, 171, 142, 139, 132, 129, 128, 122, 108, 98, 81, 74, 68,32,31,30,29,28,24,22,12). MS = m/z [M+2] + calcd for C117H165N9O6: 1793.6; found: 896.64 × 2 = 1793.28.…”

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confidence: 99%

Six-armed Structures Based on Benzene Ring, Synthesis and Characterization Via Sonogashira Coupling

et al. 2020

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A new six-armed compounds consist of benzene ring as a central core substituted with aromatic ring and three rod-like armed of 2-chloro-4,6-bis(dodecyloxy)-1,3,5-triazine as the peripheral arms unit which obtained by sequential nucleophilic substitution of chlorine atoms in cyanuric chloride. The substitution took place at the acetylenic periphery on the central benzene ring by Sonogashira coupling. Equimolar mixtures of the six-armed compounds based on the benzene core with the complementary 4-dodecyloxybenzoic acid, which already possessed liquid crystal property, resulted in an organic salt. The organic salts and structures were investigated by differential scanning calorimetry (DSC), and confirmed by spectroscopic methods (1H-NMR, 13C-NMR and Mass spectroscopy)

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Self-assembled liquid crystalline materials with fatty acids

Bhat

Ramachandra

Bhagavath

et al. 2018

J Therm Anal Calorim

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Observation of induced new smectic phase in supramolecular hydrogen bonded liquid crystals between mesogenic and non-mesogenic aliphatic compounds

Cited by 10 publications

References 42 publications

Synthesis and Characterization of New 1,3,5 -Triazine Derivatives Based on Benzene Ring

Synthesis and Characterization of New 1,3,5 -Triazine Derivatives Based on Benzene Ring

Six-armed Structures Based on Benzene Ring, Synthesis and Characterization Via Sonogashira Coupling

Self-assembled liquid crystalline materials with fatty acids

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