Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, NL-9747AG Groningen, The Netherlands.
Small. 2012 Aug 20;8(16):2532-40. doi: 10.1002/smll.201200517. Epub 2012 Jul 3.
Mixed-valence polycyanides (Prussian Blue analogues) possess a rich palette of properties spanning from room-temperature ferromagnetism to zero thermal expansion, which can be tuned by chemical modifications or the application of external stimuli (temperature, pressure, light irradiation). While molecule-based materials can combine physical and chemical properties associated with molecular-scale building blocks, their successful integration into real devices depends primarily on higher-order properties such as crystal size, shape, morphology, and organization. Herein a study of a new reduced-dimensionality system based on Prussian Blue analogues (PBAs) is presented. The system is built up by means of a modified Langmuir-Blodgett technique, where the PBA is synthesized from precursors in a self-limited reaction on a clay mineral surface. The focus of this work is understanding the magnetic properties of the PBAs in different periodic, low-dimensional arrangements, and the influence of the "on surface" synthesis on the final properties and dimensionality of the system.
混合价态多氰配合物（普鲁士蓝类似物）具有丰富的性质，从室温铁磁性到零热膨胀，这些性质可以通过化学修饰或外部刺激（温度、压力、光辐射）来调节。虽然基于分子的材料可以结合与分子尺度构建块相关的物理和化学性质，但它们成功地集成到实际设备中主要取决于更高阶的性质，如晶体尺寸、形状、形态和组织。本文介绍了一种基于普鲁士蓝类似物（PBAs）的新型低维系统的研究。该系统是通过改良的Langmuir-Blodgett 技术构建的，其中 PBA 是在粘土矿物表面的自限反应中由前体制备而成的。这项工作的重点是了解不同周期性、低维排列的 PBAs 的磁性，以及“在表面”合成对最终性质和系统维度的影响。
