Tuning mesophase topology in hydrogen-bonded liquid crystals <i>via</i> halogen and alkyl chain engineering.

ABSTRACT: This study explores the influence of halogen substitution and alkyl chain length on the liquid crystalline properties of hydrogen-bonded supramolecules. Three series of hydrogen-bonded liquid crystals (HBLCs) were synthesized by combining 4-alkoxyphenylazopyridines as proton acceptors with varying alkyl chain lengths and ortho-halogenated (F, Cl, or Br) 4-dodecyloxybenzoic acids as proton donors. The formation of hydrogen-bonding interactions between the individual components was confirmed using FTIR spectroscopy. The self-assembly behavior of these HBLCs was characterized using differential scanning calorimetry (DSC), polarized optical microscopy (POM), and X-ray diffraction (XRD). Our findings demonstrate that systematic variation of the halogen atom and alkyl chain length profoun

SUBMITTER: Darweesh AF 

PROVIDER: S-EPMC12767301 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature