单分子磁环最新进展及研究展望

Single-Molecule Toroics:Recent Advances and Perspectives

与单分子磁体的定义(SMMs)相类似,单分子磁环(SMTs)定义为具有环形磁双稳态的一类分子。该类配合物的特征在于弱耦合磁矩的“涡旋”空间分布导致总磁矩为零,但是分子仍具有环形磁矩。单分子磁环为量子计算和信息存储提供了广阔的应用前景,也可以作为具有磁电耦合效应的多铁材料。自从在[Dy3]分子中首次观察到典型的单分子磁环行为以来,研究人员在合成单分子磁环方面做出了巨大的努力,致力于合成具有环形磁矩的分子以及设法将环形磁矩增强。本文将对近年报道的新兴单分子磁环配合物进行详细地分析讨论,旨在阐明影响环形磁矩排列的因素以及单分子磁环配合物的综合设计策略,指导探索合成具有增强环形磁矩的单分子磁环配合物。

Similar to single-molecular magnets (SMMs), single-molecule toroics (SMTs) are defined as molecules with toroidal magnetic bi-stability. This type of compounds is characterized by the “vortex” spatial distribution of the weakly coupled magnetic moments, resulting in zero total magnetic momentum, but a non-vanishing toroidal magnetic moment. SMTs offer broad application prospects in quantum computing and information storage, and can also be used as a multiferroic materials with magneto-electric coupling effect. Great effort has been paid in the synthesis of SMTs since the first observation of the SMT behavior of typical [Dy3] molecules, and researchers are committed to the investigation of SMTs with enhanced molecular toroidal magnetization. In this review, several representative examples with SMT behavior will be addressed to provide a down to date overview of the burgeoning SMT complexes reported in recent years. Accordingly, we aim to illuminate the factors governing the arrangement of toroidal magnetic moments and the synthetic strategy on designing SMTs, and ultimately enlighten the study of SMTs with enhanced toroidal magnetization.