Spin crossover (SCO) complexes can be switched between low spin and high spin states induced by an external perturbation, which can be distinguished with different magnetic, optical, and structural characteristics. These properties make spin crossover materials promising candidates for applications in spintronics, information storage, sensors, digital display, and so on. In this review, we present a concise overview of research progress in last three years on self-assembly of spin crossover materials and their applications. The review starts with a detailed description of various methods developed for preparation of spin crossover particles and spin crossover films. Then highlights on their typical applications in the fields of sensing, information storage, and actuators. The review concludes with an outline of current limitations and future potential of spin crossover materials.

自旋交叉（SCO）络合物可以在由外部扰动引起的低自旋状态和高自旋状态之间切换，可以用不同的磁性，光学和结构特征来区分。这些特性使自旋交叉材料有望在自旋电子学中得到应用，信息存储，传感器，数字显示器等。在这篇综述中，我们简要概述了自旋交联材料及其应用在过去三年中的研究进展。审查从详细描述为制备自旋交联颗粒和自旋交联膜而开发的各种方法开始。然后重点介绍它们在传感，信息存储和执行器领域的典型应用。回顾总结了自旋交叉材料的当前局限性和未来潜力。