首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Self-assembled diols: synthesis, structure and dielectric studies
Authors:Jessie Lorenzo Chao  Ilja Grebenchtchikov  Robert Kieffer  Zinaida Vakhovskaya  Ute Baumeister  Carsten Tschierske  Horst Kresse
Abstract:In single-, double-, and triple-chain amphiphilic diols the CONH group was replaced by CON(CH3) in order to reduce the number of proton donor groups available for intermolecular hydrogen bonding. The resulting three new liquid crystalline diols were studied by DSC, X-ray and dielectric measurements, and show the mesophases SmA, ColH2 or CubI2, depending on the number of decyloxy groups in the hydrophobic part of the molecule. The process of self-assembly to different liquid crystalline phases is well seen in the dielectric spectrum and details of this process are discussed together with results from the X-ray measurements. All the compounds show a high frequency dielectric absorption caused by the dynamics of the network of hydrogen bonds. An additional low frequency process related to the internal dynamics of the columns is seen only in the columnar phase.
Keywords:
本文献已被 InformaWorld 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号