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中文摘要：
报道了一种新型的以氢键为驱动力的液晶自组装光控取向膜，研究了薄膜的制备方法与光敏特性．通过聚（4-乙烯基吡啶）中的吡啶基团与光敏聚丙烯酰氧基肉桂酸间的氢键作用制备了LBL（1ayer-by-layer）型的自组装多层膜，制备过程的紫外．可见光谱表明，该组装过程为逐层、均匀沉积过程．傅里叶变换红外光谱表明，多层膜的成膜驱动力为氢键．用线性偏振紫外光辐照该薄膜，多层膜中与光矢量方向匹配的光敏基团发生[2＋2]环加成反应，形成表面张力各向异性的薄膜．用该薄膜作为向列相液晶的取向膜制成平行液晶器件，在偏光显微镜下观察，发现获得了均一、稳定的取向效果．
英文摘要：
A new type of hydrogen-bonded layer-by-layer （LBL） photoalignment film was fabricated and studied. The photosensitive hydrogen donor containing cinnamoyl groups （Poly （4-acryloyloxy）-cinnamic acid, PCA） was self-assembled with hydrogen accepter poly （4-vinylpyridine） （PVPy） in an organic solvent. Then a hydrogen-bonding- directed ultrathin film was formed. The uniformity and linear growth of the deposition procedure was proven by UV- Vis spectra and the interaction between PVPy and PCA was identified as hydrogen bonding using FT-IR spectroscopy. When linearly polarized ultraviolet light （LPUVL） irradiated the multilayer film, only the photosensitive double bond parallel to the polarization direction of LPUVL could be polymerized via [2＋2] cycloaddition. After the irradiation an anisotropic film was prepared, and we used this anisotropic film as an alignment layer of nematic liquid crystals, and obtained uniform and stable alignment results.
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