Synthesis of UV-curable liquid crystalline diacrylates for the application of polarized electroluminescence |
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Authors: | Yung-Hsin Yao Liang-Rern Kung Shu-Wen Chang Chain-Shu Hsu |
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Institution: |
a Department of Applied Chemistry, National Chiao Tung University, Taiwan R.O.C |
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Abstract: | Two series of UV-curable rod-like diacrylates containing bis-tolane (M1-M5) and bis-stilbene (M6-M10) mesogens were synthesized. All of the diacrylates were prepared through convergent syntheses involving palladium-catalysed coupling reactions. The thermal transitions and mesomorphic properties of the diacrylates were characterized by differential scanning calorimetry and optical microscopy. All the bis-tolane-based monomers reveal nematic phases, except M5 which shows no mesomorphic behaviour. For the bis-stilbene based monomers, most show no mesomorphic behavior and only M7 and M9 exhibit a SmA phase. |
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