Organometallic Compounds with Designed Spin States

设计可用于信息处理和信息存储的分子是分子材料科学的主要挑战之一。适合这种应用的分子必须表现出双稳定性，这可以定义为分子系统的一种特性，允许它在一定范围的外部扰动下以两种不同的电子状态存在。表现出这种分子双稳定性的分子种类的典型例子是自旋交叉化合物。在室温下表现出较大热滞后的自旋交叉化合物需要开发用于实际应用。虽然在以往的研究中已经进行了很多尝试来制备合适的化合物，但迄今为止，制备具有如此宽迟滞的自旋交叉化合物仍然是一个具有挑战性的问题。

The design of molecules that could be utilized for information processing and information storage is one of the main challenges in molecular materials science. The molecules that would be suitable for such applications must exhibit bistability, which may be defined as a property of a molecular system that allows it to exist in two different electronic states over a certain range of external perturbation. A typical example of a molecular species that exhibits such a molecular bistability are spin crossover compounds. Spin crossover compounds that will exhibit a large thermal hysteresis around room temperature need to be developed for practical applications. Although many attempts have been made to produce a suitable compound in previous studies, so far the production of spin-crossover compounds with such a wide hysteresis is still a challenging issue.