Isoreticular two-dimensional magnetic coordination polymers prepared through pre-synthetic ligand functionalization

表面改性 聚合物 剥脱关节 化学 单层 磁性 纳米技术 配体(生物化学) 化学稳定性 分子 材料科学 有机化学 石墨烯 物理化学 受体 物理 量子力学 生物化学
作者
Javier López‐Cabrelles,Samuel Mañas‐Valero,Íñigo J. Vitórica‐Yrezábal,Pablo J. Bereciartua,J. Alberto Rodríguez‐Velamazán,João C. Waerenborgh,Bruno J. C. Vieira,Dejan Davidovikj,Peter G. Steeneken,Herre S. J. van der Zant,Guillermo Mı́nguez Espallargas,Eugenio Coronado
出处
期刊:Nature Chemistry [Springer Nature]
卷期号:10 (10): 1001-1007 被引量:100
标识
DOI:10.1038/s41557-018-0113-9
摘要

Chemical functionalization is a powerful approach to tailor the physical and chemical properties of two-dimensional (2D) materials, increase their processability and stability, tune their functionalities and, even, create new 2D materials. This is typically achieved through post-synthetic functionalization by anchoring molecules on the surface of an exfoliated 2D crystal, but it inevitably alters the long-range structural order of the material. Here we present a pre-synthetic approach that allows the isolation of crystalline, robust and magnetic functionalized monolayers of coordination polymers. A series of five isostructural layered magnetic coordination polymers based on Fe(ii) centres and different benzimidazole derivatives (bearing a Cl, H, CH3, Br or NH2 side group) were first prepared. On mechanical exfoliation, 2D materials are obtained that retain their long-range structural order and exhibit good mechanical and magnetic properties. This combination, together with the possibility to functionalize their surface at will, makes them good candidates to explore magnetism in the 2D limit and to fabricate mechanical resonators for selective gas sensing. Surface engineering is an attractive route to tune the processability, stability and functionalities of 2D materials, but typically introduces defects in the resulting structures. Now, the issue has been circumvented through pre-synthetic functionalization instead; an isoreticular family of robust layered coordination polymers has been mechanically exfoliated to give functionalized crystalline magnetic monolayers.
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