| 基于季戊四醇的新型硅碳烷液晶树状物:外围含12个丁氧基/己氧基偶氮苯基团 |
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| 引用本文： | 唐新德,张其震,范星河,周其凤. 基于季戊四醇的新型硅碳烷液晶树状物:外围含12个丁氧基/己氧基偶氮苯基团[J]. 功能材料, 2006, 37(6): 972-977 |
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| 作者姓名： | 唐新德 张其震 范星河 周其凤 |
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| 作者单位： | 山东交通学院,新材料研究所,山东,济南,250023;山东大学,化学与化工学院,山东,济南,250100;山东大学,化学与化工学院,山东,济南,250100;北京大学,化学与分子工程学院,北京,100871 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 制备了基于季戊四醇外围含丁氧基/己氧基偶氮苯基团的新型硅碳烷液晶树状物.利用Williamson反应和偶氮反应合成了4-[4-(6-羟己氧基)苯基]丁氧基偶氮苯与4-[4-(6-羟己氧基)苯基]己氧基偶氮苯两种液晶基元.以基于季戊四醇端基为Si-Cl键的硅碳烷树状物为脚手架,分别以上述两种偶氮苯液晶基团对其表面进行修饰,得到两种树状液晶化合物.采用偏光显微镜(POM)和示差扫描量热法(DSC)对修饰单元和树状物的液晶性进行表征,表明其均示向列相.
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| 关 键 词： | 季戊四醇 硅碳烷液晶树状物(LCD) 丁氧基偶氮苯 己氧基偶氮苯 向列相 |
| 文章编号： | 1001-9731(2006)06-0972-06 |
| 收稿时间： | 2005-08-19 |
| 修稿时间： | 2005-10-26 |
Novel pentaerythritol-based carbosilane liquid crystalline dendrimers containing 12 butoxy/hexaoxy-azobenzene groups on the periphery |
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| TANG Xin-de,ZHANG Qi-zhen,FAN Xing-he,ZHOU Qi-feng. Novel pentaerythritol-based carbosilane liquid crystalline dendrimers containing 12 butoxy/hexaoxy-azobenzene groups on the periphery[J]. Journal of Functional Materials, 2006, 37(6): 972-977 |
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| Authors: | TANG Xin-de ZHANG Qi-zhen FAN Xing-he ZHOU Qi-feng |
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| Abstract: | Liquid crystalline dendri mers with peripheral mesogenic groups have been prepared.Azo-reaction and Williamson syn-thesis were used in the preparation of the mesogenic groups,4-[4-(6-hydroxyhexyloxy)phenyl] butoxyazobenzene and 4-[4-(6-hydroxyhexyloxy)phenyl] hexaoxyazobenzene.Aterminal Si-Cl functional carbosilane dendri mer based on pentaerythritol wasused as dendritic scaffold and was subsequentlyfunctionalized withthe aforementioned groups.Investigation of theliquid crystal-line properties of both the mesogenic groups and the mesogen-functionalized dendri mers by polarized optical microscopy(POM)and differential scanning calori metry(DSC) showed that they exhibited nematic phases. |
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| Keywords: | pentaerythritol carbosilane liquid crystalline dendrimers (LCD) butoxyazobenzene hexaoxyazobenzene nematic phase |
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