首页> 外文期刊>Polymers for advanced technologies >Columnar liquid-crystalline assemblies composed of spiropyran derivatives and sulfonic acids
【24h】

Columnar liquid-crystalline assemblies composed of spiropyran derivatives and sulfonic acids

机译:由螺吡喃衍生物和磺酸组成的柱状液晶组件

获取原文
获取原文并翻译 | 示例
           

摘要

A series of fan-shaped spiropyran derivatives with different length of alkyl chains has been synthesized. Liquid-crystalline (LC) assemblies of spiropyran derivatives have been formed by the addition of organic sulfonic acids such as trifluoromethylsulfonic acid, 10-camphorsulfonic acid, 4-methylbenzenesulfonic acid, and imidazolium-based ionic liquids (ILs) having a sulfonic acid group. Equimolar mixtures of a fan-shaped spiropyran derivative with the acidic imidazolium-based ILs exhibit columnar phases with wider LC temperature ranges as compared to those of other mixtures. The ionic interactions formed by the ionic imidazolium moieties should contribute to the stabilization of the columnar phases. On the other hand, equimolar mixtures of the spiropyran derivative with decane-1-sulfonic acid having a long alkyl chain and poly(4-styrenesulfonic acid) do not show mesomorphism. The chemical structure of organic sulfonic acids is a key factor for the induction and stabilization of the LC phases.
机译:合成了一系列具有不同烷基链长度的扇形螺吡喃衍生物。螺吡喃衍生物的液晶(LC)组装体已经通过添加有机磺酸例如三氟甲基磺酸,10-樟脑磺酸,4-甲基苯磺酸和具有磺酸基的咪唑基离子液体(IL)而形成。与其他混合物相比,扇形螺吡喃衍生物与酸性咪唑鎓类IL的等摩尔混合物表现出具有更宽LC温度范围的柱状相。由离子咪唑鎓部分形成的离子相互作用应有助于柱状相的稳定。另一方面,螺并吡喃衍生物与具有长烷基链的癸烷-1-磺酸和聚(4-苯乙烯磺酸)的等摩尔混合物没有显示出同构。有机磺酸的化学结构是诱导和稳定液相的关键因素。

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