Abstract
A series of new side-chain liquid crystalline polymers containing chenodiol residue derived from 24-[4′-hydroxybiphenyl-4-yl-4-(allyloxy)benzoyloxy]-3α,7α-di{n-[4′-(4-ethoxybenzoyloxy)biphenyl-4-yloxy]-n-oxoalkanoyloxy}-5β-cholane was designed and prepared. The chemical structures of the monomer and polymer were confirmed by Fourier transform infrared and 1H NMR spectra. The mesomorphic properties of monomer and polymer were investigated by differential scanning calorimetry, thermogravimetric analysis, polarizing optical microscopy, and X-ray diffraction. The side-chain liquid crystalline polymers revealed wide mesophase temperature range and high thermal stability, and they showed nematic liquid crystalline phase. The influence of flexible space group length on thermal properties and specific rotation was examined.
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Acknowledgment
The authors are grateful to National Natural Science Fundamental Committee of China and HI-Tech Research and Development Program (863) of China for financial support of this work.
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Xiao, W., Zhang, B. & Cong, Y. Preparation and characterization of side-chain liquid crystalline polymers containing chenodeoxycholic acid residue. Colloid Polym Sci 286, 267–274 (2008). https://doi.org/10.1007/s00396-007-1765-y
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DOI: https://doi.org/10.1007/s00396-007-1765-y