Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio 44242, USA.
Soft Matter. 2018 Sep 11;14(35):7277-7286. doi: 10.1039/c8sm01221k.
Uniaxial order parameters of the nematic and columnar mesophases in the lyotropic chromonic liquid crystal Sunset Yellow FCF have been determined from deuteron nuclear magnetic resonance, where random confinement of the system by the dispersion of aerosil nanoparticles has been performed to help obtain the angular dependent spectra. The long-time evolution study of the order parameters shows that the system requires tens of hours to stabilize after a deep change in temperature, in contrast with the very fast assembly process of the aggregates. Finally, the degree of order of the water molecules, forced by the uniaxial environment, has been determined.
已从氘核核磁共振确定了溶致变色各向异性向列相和柱状相的单轴序参数，通过气溶胶纳米颗粒的分散对体系进行随机限制，以帮助获得角度依赖的光谱。对序参数的长时间演化研究表明，与聚集体的快速组装过程相比，在温度发生深刻变化后，该体系需要数十个小时才能稳定。最后，确定了在单轴环境下被强制的水分子的有序度。
