引用本文:
Jian Wang, Ying Han Wang. Synthesis of novel aromatic polyimides containing bulky side chain for vertical alignment liquid crystals[J]. Chinese Chemical Letters,
2008, 19(3): 359-362.
doi:
10.1016/j.cclet.2007.12.032
Citation: Jian Wang, Ying Han Wang. Synthesis of novel aromatic polyimides containing bulky side chain for vertical alignment liquid crystals[J]. Chinese Chemical Letters, 2008, 19(3): 359-362. doi: 10.1016/j.cclet.2007.12.032
Citation: Jian Wang, Ying Han Wang. Synthesis of novel aromatic polyimides containing bulky side chain for vertical alignment liquid crystals[J]. Chinese Chemical Letters, 2008, 19(3): 359-362. doi: 10.1016/j.cclet.2007.12.032
Synthesis of novel aromatic polyimides containing bulky side chain for vertical alignment liquid crystals
摘要:
In this study, a novel 4-(4-octyloxybenzoyloxy) biphenyl-3', 5'-diaminobenzoate and polyimides based on it were synthesized.The polyimide with mesogenic unit side chain exhibited excellent vertical alignment for nematic liquid crystal (LC). The pretilt angles of LCs above 89° were kept after the rubbing process with 220 mm rubbing strength. The polyimide films as the alignment layer were baked at 120℃ for 12 h, the vertical alignment of LCs was still uniform and stable. Meanwhile, the UV-vis spectra of the novel polyimide films showed the high transparency in a visible wave length.
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关键词:
- Polyimide
- / Liquid crystal
- / Vertical alignment
English
Synthesis of novel aromatic polyimides containing bulky side chain for vertical alignment liquid crystals
Abstract:
In this study, a novel 4-(4-octyloxybenzoyloxy) biphenyl-3', 5'-diaminobenzoate and polyimides based on it were synthesized.The polyimide with mesogenic unit side chain exhibited excellent vertical alignment for nematic liquid crystal (LC). The pretilt angles of LCs above 89° were kept after the rubbing process with 220 mm rubbing strength. The polyimide films as the alignment layer were baked at 120℃ for 12 h, the vertical alignment of LCs was still uniform and stable. Meanwhile, the UV-vis spectra of the novel polyimide films showed the high transparency in a visible wave length.
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Key words:
- Polyimide
- / Liquid crystal
- / Vertical alignment
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