RIMI: Thermochromism in Transition Metal Complexes

人们建议合成一系列具有热致变色行为的过渡金属配合物。拟合成的络合物类型包括四甲基甲酰亚胺盐类、席夫碱型配体以及中性胺配体。在所有情况下，将改变条件以实现最佳的热致变色行为。研究中使用的金属将包括第一排过渡金属以及第三和第四过渡系列的成员。UV-Vis和红外光谱测量将在不同的温度和压力下进行研究。X射线结晶学(具有变温能力)将被用来确定分子结构，从而确定热致变色过程导致的任何结构变化。变温核磁共振将提供一种监测热致变色溶液结构和磁性变化的方法。我们将考察“环境”条件(温度、湿度、自然酸和紫外线)对游离和包裹的热致变色化合物的影响。

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.