Materials Research Group - Structure, Dynamics & Transitionsof Liquid Crystal Polymers

该奖项是为材料研究小组的更新， 凯斯西储大学（格兰特 液晶的结构、动力学和转变 聚合物 该小组研究的主要目标是 了解生成的物理和化学要求 晶体结构包含完全延伸的链， 中性柱状六方相和含有这些相的共聚物 阶段。 研究重点是聚合物的合成， 控制分子结构，预计具有 柱状相的气动分析，重点关注主链聚酯 和聚醚，其中不对称介晶通过柔性的 间隔物。 本工作还包括超分子自组装的合成， 组装设计成具有圆柱形构象的聚合物， 微相分离膜的制备与表征 基于嵌段共聚物的超分子组件，所述嵌段共聚物包含 不同的介晶和玻璃状片段。 结构和 这些聚合物的动力学是通过X射线和中子来确定的 散射、静态和动态光散射、荧光 能量转移光谱和核磁共振 谱 电子、磁性、光学和电介质 属性也在确定中。 理论分析 分子组装、动力学、相变、流变学等 中间相的物理性质也在进行中。 与实验性努力并行。

This award is for the renewal of the Materials Research Group at Case Western Reserve University (Grant of structure, dynamics, and transitions of liquid crystalline polymers. The primary goal of the research by the group is to understand the physical and chemical requirements for generation of crystalline structures containing fully extended chains from neumatic columnar hexagonal phases and copolymers containing these phases. The research emphasis is on synthesis of polymers, having controlled molecular structure, which are predicted to have neumatic of columnar phases, with focus on main chain polyesters and polyethers in which asymmetric mesogens are linked by flexible spacers. The work also includes synthesis of supramolecular self- assembling polymers designed to have cylindrical conformations, preparation and characterization of micro-phase-separated supramolecular assemblies, based on block co-polymers that contain different mesomorphic and glassy segments. The structure and dynamics of these polymers is being determined by x-ray and neutron scattering, static and dynamic light scattering, fluorescence energy transfer spectroscopy, and nuclear magnetic resonance spectroscopy. The electronic, magnetic, optical, and dielectric properties are also being determined. Theoretical analyses of the molecular assembly, dynamics, phase transitions, rheology and other physical properties of the mesophases is also being done in parallel with the experimental effort.