• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Shape dependence in the formation of condensed phases exhibited by disubstituted sucrose esters
【24h】

Shape dependence in the formation of condensed phases exhibited by disubstituted sucrose esters

机译：双取代蔗糖酯在缩合相形成中的形状依赖性

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

We report on the self-organizing properties of sucrose esters that are di-(1',6', 1',6, and 6,6')-substituted with aliphatic chains of identical or different chain lengths and levels of saturation. For the materials possessing two saturated aliphatic chains, the compounds exhibited thermotropic lamellar smectic A phases. A remarkable new phase transition was observed for the di-octadecanoyl homologue in which one smectic A phase transformed into another with a continuous change in layer spacing, but with a discontinuous change in the correlation length. The incorporation of long cis-unsaturated chains led to increased cross-sectional areas of the chains relative to the sucrose head groups and, hence, columnar phases were observed.
机译：我们报道了被相同或不同链长和饱和度的脂族链二-（1'，6'，1'，6和6,6'）取代的蔗糖酯的自组织特性。对于具有两个饱和脂族链的材料，该化合物表现出热致层状近晶A相。对于二十八烷酰基同系物观察到了显着的新相变，其中一个层列A相转变为另一层，层间距连续变化，但相关长度不连续变化。较长的顺式不饱和链的引入导致链的横截面积相对于蔗糖头基增加，因此观察到柱状相。

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