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Title: Coumarin substituted symmetric diaminopyridine molecules: Synthesis, mesomorphic characterizations and DFT studies
Authors: Mohammad, AbdulKarim-Talaq
Mohammed, Hameed Madlool
Srinivasa, H.T.
Ahmed Ameen, Wissam
Keywords: 2,6-diaminopyridine
Liquid crystals
Nematic mesophase
Issue Date: Sep-2020
Publisher: Elsevier B.V
Citation: Journal of Molecular Liquids, 2020, Vol.314, p113782
Abstract: The 2, 6-diaminopyridine was symmetrically substituted with coumarins from a lateral side of the molecules. All the molecules characterized by standard spectroscopic methods such as infrared spectroscopy, and nuclear magnetic resonance spectroscopy techniques. Mesomorphic properties are evaluated by the differential scanning calorimetry and the polarized optical microscope. The measurements show that the lower members did not favour liquid crystal formation, while higher members are exhibiting liquid crystalline, namely Nematic mesophase. The DFT computations manifest the nature of liquid crystal geometrical aspects.
Description: Restricted Access.
ISSN: 0167-7322
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Copyright: 2020 Elsevier B.V.
Additional information: Supplementary Information Available
Appears in Collections:Research Papers (SCM)

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