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Updated: Mar 12, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Mirror symmetry breaking in cubic phases and isotropic liquids driven by hydrogen bonding
Mohamed Alaasar1, Silvio Poppe2, Qingshu Dong3
1Institute of Chemistry, Martin Luther University Halle-Wittenberg, Kurt-Mothes Str.2, D-06120 Halle, Germany. carsten.tschierske@chemie.uni-halle.de and Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt. malaasar@sci.cu.edu.eg.
Abstract:
Achiral supramolecular hydrogen bonded complexes between rod-like 4-(4-alkoxyphenylazo)pyridines and a taper shaped 4-substituted benzoic acid form achiral (Ia3[combining macron]d) and chiral "Im3[combining macron]m-type" bicontinuous cubic (I432) phases and a chiral isotropic liquid mesophase (Iso1[*]). The chiral phases, resulting from spontaneous mirror symmetry breaking, represent conglomerates of macroscopic chiral domains eventually leading to uniform chirality.
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