Among various classes of Photoluminescent (PL) compounds, soft-matter based materials in
which chromophores are embedded in a Liquid-Crystal (LC) host polymer prove to be very attractive
in the production of flexible panels and on-off temperature switches. Actually, the obtainment of low
cost, easily synthesizable, and stable organic molecules soluble in the LC matrix is a challenge for both
scholars and technologists. Here we describe the synthesis of two new emissive dyes based on a dicyanophenylenevinylene
and on a bis-azobenzene core whose PL properties were investigated as neat solids, in
solution, and in particular in a dye-doped LC nematic polymer often employed in PDLC applications.
1H NMR and 13C NMR spectroscopy allow the characterization of all compounds Their thermotropic liquid-
crystalline (LC) properties were examined by differential scanning calorimetry and polarizing optical
microscopy. Photoluminescence properties were characterized by fluorescence spectra.