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首页> 外文期刊>Chemistry: A European journal >Hydrophobicity-Driven Self-Assembly of an Eighteen-Membered Honeycomb Lattice with Almost Classical Spins
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Hydrophobicity-Driven Self-Assembly of an Eighteen-Membered Honeycomb Lattice with Almost Classical Spins

机译：疏水性驱动的十八元蜂窝格的自组装，具有几乎经典的自旋

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摘要

The design and synthesis of model compounds that do not exist naturally is one of the important targets in modern coordination chemistry. Herein, an eighteen-membered honeycomb structure with equal numbers of Mn-II (s = 5/2) and Gd-III (s = 7/2) metal centers has been prepared, for the first time, by using a hydrophobic force-directed self-assembling process. Due to the weakly coupled GdIII pairs, the magnetic properties are mainly determined by eight-membered chains in the experimentally considered temperature range. These [Mn4Gd4] "finite-size" chains, albeit with large Hilbert space, can be fully resolved by the high-temperature series expansion and the powerful finite-temperature Lanczos method, which reveal that the exchange-couplings between the metal centers are antiferromagnetic and consistent with the magnetization measurement. Interestingly, from the surface-engineering point of view, the [Mn4Gd4] chains are "precisely" assembled into a 2D honeycomb pattern, which is potentially desirable in the design of weakly coupled qubits.
机译：天然不存在的模型化合物的设计和合成是现代配位化学的重要目标之一。在此，我们首次利用疏水力制备了具有等量Mn-II（s = 5/2）和Gd-III（s = 7/2）金属中心的十八元蜂窝结构，定向的自组装过程。由于弱耦合的GdIII对，在实验上考虑的温度范围内，磁性主要由八元链决定。这些[Mn4Gd4]“有限尺寸”链，尽管具有大的希尔伯特空间，但可以通过高温级数展开和强大的有限温度Lanczos方法完全解析，这表明金属中心之间的交换耦合是反铁磁性的并与磁化强度测量结果一致。有趣的是，从表面工程学的角度来看，[Mn4Gd4]链被“精确地”组装成2D蜂窝状图案，这在设计弱耦合量子位时可能是需要的。

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