Ligand exchange of thermochromic, LETC, systems exhibiting a reversible change in absorbance of electromagnetic radiation as the temperature of the system is reversibly changed are described. The described LETC systems include one or more than one transition metal ion, which experiences thermally induced changes in the nature of the complexation or coordination around the transition metal ion(s) and, thereby, the system changes its ability to absorb electromagnetic radiation as the temperature changes. In accordance with one aspect of the present invention, a thermochromic system is disclosed comprising a first metal ion and a second metal ion and at least one ligand that complexes with the first metal ion to form a LεMLC and complexes with the second metal ion to form a HεMLC wherein an increase in temperature of the system results in a reversible net increase in its ability to absorb light energy in the 400 nm to 1400 nm range due to the ligand transferring from the first metal ion to the second metal ion.
本文介绍了一种具有热致变色特性的
配体交换系统,当系统的温度可逆变化时,其吸收电磁辐射的能力也可逆变化。所述的LETC系统包括一个或多个过渡
金属离子,其在过渡
金属离子周围的络合或配位发生热诱导变化,从而使系统随着温度变化而改变吸收电磁辐射的能力。根据本发明的一个方面,公开了一种热致变色系统,包括第一
金属离子和第二
金属离子以及至少一个
配体,该
配体与第一
金属离子形成LεMLC配合物,并与第二
金属离子形成HεMLC配合物,系统温度的升高导致可逆的净吸收光能力增加,范围为400纳米至1400纳米,这是由于
配体从第一
金属离子转移到第二
金属离子造成的。