引用本文:
莫玲超, 梁晓琴, 安忠维, 陈新兵, 陈沛. 侧向多氟取代二芳基乙炔类液晶的合成及性能[J]. 应用化学,
2013, 30(8): 861-866.
doi:
10.3724/SP.J.1095.2013.20446
Citation: MO Lingchao, LIANG Xiaoqin, AN Zhongwei, CHEN Xinbing, CHEN Pei. Synthesis and Properties of Lateral Multi-fluorine Substituted Internal Alkynes Liquid Crystals[J]. Chinese Journal of Applied Chemistry, 2013, 30(8): 861-866. doi: 10.3724/SP.J.1095.2013.20446
Citation: MO Lingchao, LIANG Xiaoqin, AN Zhongwei, CHEN Xinbing, CHEN Pei. Synthesis and Properties of Lateral Multi-fluorine Substituted Internal Alkynes Liquid Crystals[J]. Chinese Journal of Applied Chemistry, 2013, 30(8): 861-866. doi: 10.3724/SP.J.1095.2013.20446
侧向多氟取代二芳基乙炔类液晶的合成及性能
English
Synthesis and Properties of Lateral Multi-fluorine Substituted Internal Alkynes Liquid Crystals
Abstract:
Sixteen lateral multi-fluorine substituted internal alkynes liquid crystals were synthesized via a series of reactions including substituted phenylboronic acidation,Suzuki cross-coupling,Sonogashira crosscoupling and iodination using 4-bromo-alkylbenzene and 4-bromo-2,3-difluoro-phenol precursors. The structures of the products were characterized by means of IR,NMR and MS. The differential scanning calorimetric,polarizing microscope and Abbe refractometer,were used to investigate their properties.The results demonstrate that the compounds possess low melting point,wide phase transition interval and high optical anisotropy value(△n > 0.3). The obtained liquid crystals might find broad potential applications in dual-frequency liquid crystals.
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