Mesomorphic, spectroscopic and antimicrobial properties of alkoxy-substituted azo-ester liquid crystals
Abstract
This study reports a new homologous series of azo-ester liquid crystalline compounds, 4-(4′-n-alkoxy-3′-methoxybenzoyloxy) phenyl azo-3″-chloro-4″-fluorobenzene, synthesized and characterized using spectroscopic techniques. Mesomorphic behavior was examined by polarized optical microscopy and differential scanning calorimetry. Lower homologues (C1–C4) were non-mesomorphic, while higher members (C5–C16) exhibited monotropic smectic phases on cooling. UV–Vis spectra showed bathochromic shifts with increasing alkoxy chain length, indicating enhanced π-conjugation. Antimicrobial studies revealed that C8 and C10 derivatives displayed the highest activity. The results highlight the influence of terminal chain length and molecular architecture on mesomorphic and biological properties of azo-ester liquid crystalline materials.
Fields of Study & Subjects
Liquid Crystal Research Advancements
Chemical synthesis and pharmacological studies
Molecular spectroscopy and chirality
Publication details
- Journal / source
- Molecular Crystals and Liquid Crystals
- Publisher
- Informa UK Limited
- Volume
- 770
- Issue
- 8
- Pages
- 1215–1238
- Publication date
- 3 April 2026
- Language
- EN