New Stable Radicals for Magnetic and Conductive Liquid Crystalline Materials

该奖项在化学系的有机动力学项目中，将允许范德比尔特大学的Piotr Kaszynski教授合成和研究具有稳定自由基的不同寻常的特征的液晶。这导致了通过结构变化或通过控制自由基的性质来控制液晶的性质来‘调节’电和磁性能的能力。所要研究的结构是基于硫胺基自由基片段。用于预测性能的计算方法用于特定制备目标的选择和这种选择的改进。在开发合成方法的过程中制备的最终目标材料和模型非液晶自由基都将通过电化学、电子顺磁共振和适当的X射线光谱进行研究。它的目的是产生具有不寻常的电和磁性能的新材料。这项工作涉及两个吸引人的结构特征相结合的新材料的制备。液晶分子对微小的电信号和温度变化做出反应，被用作显示器、温度传感器等。稳定的自由基本质上具有不同寻常的电学和磁学性质。这项工作将它们结合起来，以生产、表征和研究一类独特的物质，并可能最终开发出包含它们的新型设备。

This award, in the Organic Dynamics Program of the Chemistry Division, will allow Prof. Piotr Kaszynski of Vanderbilt University to synthesize and investigate liquid crystals which have the unusual feature of also being stable free radicals. This leads to the ability to `tune` electrical and magnetic properties either by controlling the nature of the liquid crystal by structural variation or by controlling the nature of the free radical. The structures to be studied are based on the thioaminyl radical fragment. Computational methods for prediction of properties are used in the selection of specific preparative targets and in refinement of such choices. Both the ultimate target materials and the model non-liquid crystal free radicals, prepared in the course of developing synthetic methodology, will be studied electrochemically, by epr, and by X-ray spectroscopy when appropriate. It is intended that new materials with unusual electrical and magnetic properties will result. This work involves the preparation of new materials in which two attractive structural features are combined. Liquid crystalline molecules respond to small electrical signals and to temperature variation and are used as displays, thermosensors, and otherwise. Stable free radicals possess unusual electrical and magnetic properties intrinsically. This work combines them to produce, characterize, and study a unique class of substances, and perhaps ultimately to develop novel devices containing them.