Bireactive calamitic liquid crystals derived from fluorene ester linkage |
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| Authors: | C Aguilera P Sáez M Morel P Gallegos |
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| Institution: | 1. Departamento de Polímeros , Facultad de Ciencias Químicas , Universidad de Concepción , Concepción, Chile caguiler@udec.cl;3. Departamento de Polímeros , Facultad de Ciencias Químicas , Universidad de Concepción , Concepción, Chile;4. Universidad Técnica Federico Santa María , Sede Concepción, Chile |
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| Abstract: | New thermotropic liquid crystalline monomer esters, containing fluorene in their mesogenic core with luminescent properties, were synthesized and characterized. The monomers studied exhibited a broad mesomorphic range and a nematic phase was identified by differential scanning calorimetry and polarized optical microscopy. Absorption and photoluminescence spectra studied in solution indicated that these compounds possess good optical stability. Linearly polarized light emission was observed in oriented thin films prepared by an in‐situ photopolymerization technique. The preparation of oriented thin films shows a preferential emission direction necessary for application in linearly polarized blue light‐emitting diodes. |
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