• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Liquid Crystals; 20031013-20031017; Zakopane; PL >Linear and crosslinked silicon based liquid crystalline materials
【24h】

Linear and crosslinked silicon based liquid crystalline materials

机译：线性和交联的硅基液晶材料

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper the effect of steric hindrance, crosslinking and the use of multipode mesogenic moieties is presented as a part of studies directed on the architectural modification of silicon containing SLCP's. Tris(trimethylsilyl)methyl (trisyl) groups have been attached to liquid crystalline comb-like polysiloxanes by hydrosilylation reaction in order to increase their thermal stability. It was found that attaching trisyl group to 10% of monomeric units led to a decrease in mass loss at 330℃ by a factor of 2. The thermooptical studies of linear and crosslinked LC polycarbosilanes exhibiting SmC~* phase proved that crosslinking stabilises the generated mesophases, especially during isotropisation process. The new synthetic route for polysiloxanes with pendant "triple-fork" mesogenes has been developed. It was found that such the structures are able to generate stable mesophases even if their molecular mass is relatively low.
机译：在本文中，空间位阻，交联和多极介晶基团的使用受到了影响，这是针对含硅SLCP的结构改性研究的一部分。为了增加其热稳定性，三（三甲基甲硅烷基）甲基（三烷基）基团通过氢化硅烷化反应连接到液晶梳状聚硅氧烷上。结果发现，在10％的单体单元上连接三基会导致在330℃时质量损失减少2倍。线性和交联的具有SmC〜*相的LC聚碳硅烷的热光研究表明，交联可稳定生成的中间相，尤其是在各向同性过程中。已经开发出了带有“三叉”液晶元悬挂剂的聚硅氧烷的新合成路线。已经发现，即使它们的分子质量相对较低，这种结构也能够产生稳定的中间相。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号