Asymmetrical liquid crystals synthesis for effective sensing: Fluorescence investigations

Currently, a new set of asymmetrical dimeric molecules with a Schiff-base at one end and a chalcone alkali
substitution by di-ether are made and their liquid crystal and fluorescence properties are investigated. The
proposed chemical structure was confirmed by routine analytical methods using FT-IR and NMR spectroscopy.
Additionally, polarized optical microscopy (POM); was used to assess the pointed compounds’ liquid crystalline
characteristics, while differential scanning calorimetry (DSC); was employed to confirm the compounds’ tran
sitions. The results report the length of the alkali chain at one end of the molecule is critical to the creation of the
mesophase type. Compounds with medium-length chains exhibit nematic mesophases with moderate transition
temperatures. The fluorescence of compounds was analyzed, with blue-emitting results indicating the presence of
blue-light-emitting features. The 10a had higher ε; as well as red-shifted λmax; and Fmax; compared to the others
and has blue light emission properties. Eventually; the expanding range of possible uses to include OLED material
and fluorescent probes for sensing applications.