| A STUDY ON CONFORMATIONAL STRUCTURE OF MODEL COMPOUND OF NOVEL SIDE CHAIN LIQUID CRYSTALLINE POLYMER BY USING HIGH RESOLUTION SOLID STATE ~(13)C-NMR |
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| 作者姓名： | 杨小震 陆群 冯立文 朱善农 |
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| 作者单位： | Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080，Polymer Physics Laboratory，Institute of Chemistry，Academia Sinica，Beijing 100080 |
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| 摘 要： | ~(13)C-NMR chemical shifts of model compound of a novel side chain liquid crystalline polymer, poly 2.5-his (4-alkoxybenzoyloxy) styrene , have been assigned in this study. Moreover, by using high-resolution solid-state CP/MAS (cross polarization/magic angle spinning) technique, the spectrum shows that in the crystalline state the ester linkage has a conformation nearly perpendicular to the either side of ring planes, and that the alkoxy groups are not fully in zigzag form. The possible conformational changes around the mesogens from the solid state to the mesophase are discussed.
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| 收稿时间： | 1991-01-04 |
A STUDY ON CONFORMATIONAL STRUCTURE OF MODEL COMPOUND OF NOVEL SIDE CHAIN LIQUID CRYSTALLINE POLYMER BY USING HIGH RESOLUTION SOLID STATE 13C-NMR |
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| YANG Xiaozhen,LU Qun,FENG Liwen,ZHU Shannong.A STUDY ON CONFORMATIONAL STRUCTURE OF MODEL COMPOUND OF NOVEL SIDE CHAIN LIQUID CRYSTALLINE POLYMER BY USING HIGH RESOLUTION SOLID STATE ~(13)C-NMR[J].Chinese Journal of Polymer Science,1993,0(2):115-120. |
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| Authors: | YANG Xiaozhen LU Qun FENG Liwen ZHU Shannong |
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| Institution: | Polymer Physics Laboratory; Institute of Chemistry; Academia Sinica; Beijing |
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| Abstract: | ~(13)C-NMR chemical shifts of model compound of a novel side chain liquid crystalline polymer, poly 2.5-his (4-alkoxybenzoyloxy) styrene , have been assigned in this study. Moreover, by using high-resolution solid-state CP/MAS (cross polarization/magic angle spinning) technique, the spectrum shows that in the crystalline state the ester linkage has a conformation nearly perpendicular to the either side of ring planes, and that the alkoxy groups are not fully in zigzag form. The possible conformational changes around the mesogens from the solid state to the mesophase are discussed. |
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| Keywords: | Conformation ~(13)C NMR Liquid crystal 1 4- bis[4-heptyloxybenzoyloxy]-benzene |
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