Dual-Responsive Spin-Crossover Cages

自旋交叉化合物可以改变其自旋状态，以响应刺激，如温度和光，它们在电子开关和传感器方面的应用前景广阔。金属有机笼作为一种分子容器，因其具有在其腔内封装具有高亲和力的客体分子的潜力而受到关注。近年来，自旋交叉铁（II）笼作为一类新的自旋交叉化合物出现，其客体包封可以调节自旋交叉性能。然而，自旋交叉笼的例子仍然相对较少，合作效应和主客体化学对自旋交叉的影响仍不清楚。在本项目中，将开发双响应自旋交叉笼，其中温度和光都可以切换笼中Fe（II）中心的自旋状态在高自旋和低自旋之间。研究了协同效应和主客体化学在自旋交叉中的作用。通过这些研究，将对多核结构中的自旋交叉有更深入的了解，从而使其在传感等应用中得到改进的合理设计。

Spin-crossover compounds can change their spin-state in response to stimuli, such as temperature and light, and they show promise in applications as electronic switches and sensors. Metal-organic cages have gained attention as molecular containers for their potential to encapsulate guest molecules with high affinity within their cavities. Recently, spin-crossover Fe(II) cages have emerged as a new class of spin-crossover compounds where guest encapsulation can tune the spin-crossover properties. However, there are still relatively few examples of spin-crossover cages and the influence of cooperative effects and host-guest chemistry on spin-crossover is still not well understood. In this project, dual-responsive spin-crossover cages will be developed where both temperature and light can switch the spin-state of the Fe(II) centres in the cage between high and low spin. The role of cooperative effects and host-guest chemistry on the spin-crossover will also be investigated. Through these studies, a greater understanding of spin-crossover in multinuclear architectures will be gained, enabling their improved rational design for applications like sensing.