Since the last century, we have witnessed the development of molecular magnetism which deals with magnetic materials based on molecular species, i.e., organic radicals and metal complexes. Among them, the broadest attention was devoted to molecule-based ferro-/ferrimagnets, spin transition materials, including those exploring electron transfer, molecular nanomagnets, such as single-molecule magnets (SMMs), molecular qubits, and stimuli-responsive magnetic materials. Their physical properties open the application horizons in sensors, data storage, spintronics, and quantum computation. It was found that various optical phenomena, such as thermochromism, photoswitching of magnetic and optical characteristics, luminescence, nonlinear optical and chiroptical effects, as well as optical responsivity to external stimuli, can be implemented into molecule-based magnetic materials. Moreover, the fruitful interactions of these optical effects with magnetism in molecule-based materials can provide new physical cross-effects and multifunctionality, enriching the applications in optical, electronic, and magnetic devices. This Review aims to show the scope of optical phenomena generated in molecule-based magnetic materials, including the recent advances in such areas as high-temperature photomagnetism, optical thermometry utilizing SMMs, optical addressability of molecular qubits, magneto-chiral dichroism, and opto-magneto-electric multifunctionality. These findings are discussed in the context of the types of optical phenomena accessible for various classes of molecule-based magnetic materials.

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分子磁性材料中的光学现象

自上个世纪以来，我们见证了分子磁性的发展，分子磁性研究基于分子物种（即有机自由基和金属络合物）的磁性材料。其中，最广泛的关注集中在分子基铁/亚铁磁体、自旋跃迁材料（包括探索电子转移的材料）、分子纳米磁体（例如单分子磁体（SMM））、分子量子位和刺激响应磁性材料。它们的物理特性开辟了传感器、数据存储、自旋电子学和量子计算领域的应用前景。研究发现，各种光学现象，如热致变色、磁和光学特性的光转换、发光、非线性光学和手性光学效应，以及对外部刺激的光学响应性，都可以应用到基于分子的磁性材料中。此外，这些光学效应与分子材料中磁性的富有成效的相互作用可以提供新的物理交叉效应和多功能性，丰富了光学、电子和磁性器件中的应用。本综述旨在展示分子磁性材料中产生的光学现象的范围，包括高温光磁性、利用 SMM 的光学测温、分子量子位的光学可寻址性、磁手性二色性和光光学等领域的最新进展。磁电多功能。这些发现是在各类基于分子的磁性材料可实现的光学现象类型的背景下讨论的。