Monotropic smectic A to double layer smectic C transition of biphenyl containing liquid crystal acetylene

Zhen Qiang Yu Cai Zhen Zhu Zhe Zhang Jian Hong Liu Jacky W. Y. Lam Ben Zhong Tang

引用本文: Zhen Qiang Yu,  Cai Zhen Zhu,  Zhe Zhang,  Jian Hong Liu,  Jacky W. Y. Lam,  Ben Zhong Tang. Monotropic smectic A to double layer smectic C transition of biphenyl containing liquid crystal acetylene[J]. Chinese Chemical Letters, 2011, 22(11): 1355-1358. doi: 10.1016/j.cclet.2011.06.013 shu
Citation:  Zhen Qiang Yu,  Cai Zhen Zhu,  Zhe Zhang,  Jian Hong Liu,  Jacky W. Y. Lam,  Ben Zhong Tang. Monotropic smectic A to double layer smectic C transition of biphenyl containing liquid crystal acetylene[J]. Chinese Chemical Letters, 2011, 22(11): 1355-1358. doi: 10.1016/j.cclet.2011.06.013 shu

Monotropic smectic A to double layer smectic C transition of biphenyl containing liquid crystal acetylene

  • 基金项目:

    The author (Z.Q.Yu) would like to thank the financial supports of National Natural Science Foundation of China (No.21074073) and Shenzhen Key Laboratory of Functional Polymers (No.FP20100011).

摘要: 5-[(4'-Heptoxy-4-biphenylyl)carbonyloxy]-l-pentyne (A-3, 7) was synthesized and the phase structures and transitions were investigated by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), polarized light microscopy (PLM) and the molecular packing in the crystal and liquid crystalline phases were simulated by molecular dynamic simulation. The results showed that the sample formed thermodynamically metastable SmA and SmC2 phases before crystallized during cooling and the crystal phase directly transformed into isotropic phase during heating.

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  • 收稿日期:  2011-03-31
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