Thermal and Mesomorphic Investigations of 1:1 Supramolecular Assemblies of 4-[(4-(n-Alkoxy)phenylimino)methyl]benzoic Acids Having Symmetrical and Un-Symmetrical Terminal Chain Lengths

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چکیده

Thermal and mesomorphic properties of possible 1:1 supramolecular complexes (SMCs) (Im/In) designed from two members 4-[(4-(n-alkoxy)phenylimino)methyl]benzoic acid with symmetrical or un-symmetrical alkoxy terminal flexible chains (carbons m n = 6, 8 16), were analyzed by differential scan-calorimetry (DSC), thermogravemetric (TG) analysis, their mesophases identified polarized optical microscopy (POM). The equimolecular mixtures the acids possess lengths. binary examined as a function total chain length on both sides. Results revealed that nematic mesophase temperature range increases for all mixtures. A comparison was constructed between formed SMCs those previously prepared 4-n-alkoxyphenylazo benzoic well 4-n-alkoxy acids, to examine impact mesogenic core properties. indicated portion lengthens thermal stability exhibits higher values phase transition temperatures; whereas, azo Schiff base moieties exhibited near

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ژورنال

عنوان ژورنال: Symmetry

سال: 2021

ISSN: ['0865-4824', '2226-1877']

DOI: https://doi.org/10.3390/sym13101785