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Non-covalent dendrimer-based liquid crystalline complexes: Synthesis and characterization |
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| Authors: | Khadijeh Didehban Ali Akbar Entezami |
| Affiliation: | a Metallurgy Group, Material School, NSTRI, Tehran, Iran b Laboratory of Carbohydrates and Biopolymers, Faculty of Chemistry, University of Tabriz, Tabriz P.O. Box 5166616471, Iran c Laboratory of Polymer, Faculty of Chemistry, University of Tabriz, Tabriz, Iran |
| Abstract: | The synthesis and structural characterization of dendritic macromolecules based on 3,5-dihydroxybenzoic acid are described. The molecular structures and purity of all new compounds were confirmed by 1H NMR, 13C NMR spectroscopy and elemental analysis. The dendritic non-covalent liquid crystalline complexes were prepared through the formation of hydrogen bonds between different generation of dendritic acids (proton donor) and stilbazole derivative containing bipyridyl units (proton acceptor). We found that, the hydrogen-bonded dendritic liquid crystals supramolecules (G1-2py, G2-2py and G3-2py) exhibits nematic and semectic phase. The polarizing optical microscopy (POM) and differential scanning calorimetry (DSC) were used for investigation of the liquid crystalline properties of the hydrogen-bonded dendritic supramolecular complexes. |
| Keywords: | Dendrimer Hydrogen-bonded Liquid crystal DSC POM |
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