Journal of the Iranian Chemical Society

, Volume 4, Issue 4, pp 402–407 | Cite as

Synthesis of mesomorphic 3,5-bis(3,4,5-trialkyloxybenzoylamino)-4-methylbenzoates involving intermolecular hydrogen bonding

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Abstract

A series of methyl 3,5-bis(3,4,5-trialkyloxybenzoylamino)-4-methylbenzoates (alkyl = CH3(CH2)n−1, n = 8, 10, 12, 14 and 16) exhibits mesomorphic behavior at temperatures between 120 and 240 °C. The liquid crystalline properties have been characterized using differential scanning calorimetry, optical polarization microscopy and X-ray diffraction. The molecules stack in columns which pack under hexagonal symmetry. Variable temperature infra-red absorption measurements provide evidence of intermolecular hydrogen bonding between the amide entities in both the crystalline and liquid-crystalline phases.

Keywords

Mesomorphism Hexagonal columnar Liquid crystal Amide H-bonding 
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Copyright information

© Iranian Chemical Society 2007

Authors and Affiliations

  1. 1.Groupe des Matériaux OrganiquesInstitut de Physique et Chimie des MatériauxStrasbourg CedexFrance

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