Wide-band reflective films produced by side-chain cholesteric liquid-crystalline elastomers derived from a binaphthalene crosslinking agent
Wide-band reflective films produced by side-chain cholesteric liquid-crystalline elastomers derived from a binaphthalene crosslinking agent
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由联萘交联剂衍生的侧链胆甾型液晶弹性体生产的宽带反射膜
DOI：
10.1016/j.polymer.2011.10.036
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发表时间：
2011-11
期刊：
影响因子：
4.6
通讯作者：
杨槐
中科院分区：
文献类型：
--
作者：
杨洲;杨槐
采用含二萘基交联剂，制备了一系列以聚硅氧烷和胆固醇衍生物单体为基础的新型侧链胆固醇型液晶弹性体。通过红外光谱（FT-IR）、核磁共振（1H NMR）、DSC （DSC）和POM （POM）等测试手段对单体和弹性体的化学结构和亚晶性进行了表征。值得注意的是，弹性体的螺旋扭转力（HTP）表现出不同寻常的温度依赖性，这是由于交联剂和介生单元的配位造成的。随着温度的升高，含有少量交联单元的弹性体HTP出现拐点，而含有大量交联单元的弹性体HTP出现直线位移。利用不同温度的HTP弹性体制备了非均匀节距分布的单层宽频带反射膜。通过扫描电镜（SEM）研究，验证了宽带反射的机理。
A series of novel side-chain cholesteric liquid-crystalline elastomers based on polysiloxane and cholesterol derivate monomer were prepared by adopting a crosslinking agent containing binaphthalene group. The chemical structures and mesomorphic properties of the monomers and elastomers were confirmed by FT-IR,1H NMR, DSC and POM measurements. Worthily, the elastomers exhibited unusual temperature dependence of the helical twisting power (HTP) which is demonstrated resulting from coordination of the crosslinking agent and the mesogenic units. With increase in temperature, the HTP of elastomers containing small quantity of the crosslinking unit exhibited a turning point, while that of elastomers comprising much more crosslinking unit shifted straight. Furthermore, a single layer wide-band reflective film with non-uniform pitch distribution was prepared by utilizing the HTP variety of elastomers with change in temperature. From scanning electron microscopy (SEM) investigations, the mechanism of the broadband reflection was verified.
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影响因子：
4
作者：
B. Fan;S. Vartak;J. Eakin;S. Faris
通讯作者：
B. Fan;S. Vartak;J. Eakin;S. Faris
影响因子：
--
作者：
GOODBY, JW
通讯作者：
GOODBY, JW
DOI：
10.1103/physreve.73.061701
发表时间：
2006-06
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
作者：
D. Zografopoulos;E. Kriezis;M. Mitov;C. Binet
通讯作者：
D. Zografopoulos;E. Kriezis;M. Mitov;C. Binet
影响因子：
6
作者：
Hu, Jian-She;Zhang, Bao-Yan;Wang, Bai
通讯作者：
Wang, Bai
DOI：
10.1063/1.3069010
发表时间：
1974-02
期刊：
--
影响因子：
--
作者：
P. D. Gennes;Richard Alben
通讯作者：
P. D. Gennes;Richard Alben