RIMI: Thermochromism in Transition Metal Complexes

提出了一系列具有热致变色行为的过渡金属配合物的合成方法。要合成的配合物类型将包括四甲尾酸盐、希夫碱型配体以及中性胺配体。在所有情况下，条件将会改变，以达到最佳的热致变色行为。研究中使用的金属将包括第一行过渡金属以及第三和第四过渡系列的成员。紫外-可见和红外光谱测量将在不同温度和压力下进行研究。x射线晶体学（具有可变温度能力）将用于确定分子结构，从而确定由热致变色过程引起的任何结构变化。变温核磁共振将为监测热致变色溶液的结构和磁性变化提供一种方法。“环境”条件（温度、湿度、天然酸和紫外线）对游离和封装的热致变色化合物的影响将被检查。

It is proposed to synthesize a series of transition metal complexes that exhibit thermochromic behavior. The types of complexes to be synthesized will include those of the tetrcimetaillate salts, Schiff-base type ligands as well as neutral amine ligands. In all instances, the conditions will be varied to achieve optimum thermochromic behavior. The metals used in the study will include first row transition metals as well as members of the third and fourth transition series. UV-Vis and infrared spectroscopic measurements will be studied at varied temperatures and pressures. X-ray crystallography (with variable temperature capabilities) will be used to determine molecular structures and therefore any structural changes that result from thermochromic processes. Variable temperature NMR will provide a method to monitor structural as well as magnetic changes of thermochromic solutions. The effect of "environmental" conditions (temperature,moisture,natural acids, and UV light) on both free and encapsulated thermochromic compounds will be examined.