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Mesophase behavior of new linear supramolecular hydrogen-bonding complexes.

ABSTRACT: Thermal and mesophase behavior of four new series of hydrogen-bonded supramolecular complexes (In/IIm) were investigated by differential scanning calorimetry and phases identified by polarized light microscopy. All hydrogen-bonded complexes formed from 4-alkoxyphenylazobenzoic acid (In) and 4-(4'-pyridylazophenyl)-4''-alkoxybenzoates (IIm). The results revealed that the prepared complexes are dimorphic, possessing smectic C and nematic phases. The comparison, made between the present series and previously investigated simpler, In/IIIm and angular, In/IVm analogues, revealed that increasing the length of the mesogenic core and/or linearity of complex increase the stabilities of both the smectic C and nematic phases.

SUBMITTER: Ahmed HA

PROVIDER: S-EPMC9087691 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Mesophase behavior of new linear supramolecular hydrogen-bonding complexes.

Ahmed H A HA Hagar M M Aljuhani A A

RSC advances 20181011 61

Thermal and mesophase behavior of four new series of hydrogen-bonded supramolecular complexes (In/IIm) were investigated by differential scanning calorimetry and phases identified by polarized light microscopy. All hydrogen-bonded complexes formed from 4-alkoxyphenylazobenzoic acid (In) and 4-(4'-pyridylazophenyl)-4''-alkoxybenzoates (IIm). The results revealed that the prepared complexes are dimorphic, possessing smectic C and nematic phases. The comparison, made bet ...[more]

PMID: 35547078

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