Skorupskii Grigorii, Dincă Mircea
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
J Am Chem Soc. 2020 Apr 15;142(15):6920-6924. doi: 10.1021/jacs.0c01713. Epub 2020 Apr 1.
Electrically conductive metal-organic frameworks (MOFs) provide a rare example of porous materials that can efficiently transport electrical current, a combination that is favorable for a variety of technological applications. The vast majority of such MOFs are highly anisotropic in both their structures and properties: Only two electrically conductive MOFs reported to date exhibit cubic structures that enable isotropic charge transport. Here we report a new family of intrinsically porous frameworks made from rare-earth nitrates and hexahydroxytriphenylene. The materials feature a novel hexanuclear secondary building unit and form cubic, porous, and intrinsically conductive structures, with electrical conductivities reaching 10 S/cm and surface areas of up to 780 m/g. By expanding the list of MOFs with isotropic charge transport, these results will help us to improve our understanding of design strategies for porous electronic materials.
导电金属有机框架材料（MOFs）是多孔材料中罕见的例子，这类材料能够有效地传输电流，这种特性组合有利于多种技术应用。绝大多数此类MOF在结构和性质上都具有高度各向异性：迄今为止报道的仅有两种导电MOF呈现出能够实现各向同性电荷传输的立方结构。在此，我们报道了一个由稀土硝酸盐和六羟基三亚苯制成的新型本征多孔框架材料家族。这些材料具有一种新型的六核二级构筑单元，并形成立方、多孔且本征导电的结构，电导率可达10 S/cm，比表面积高达780 m²/g。通过扩充具有各向同性电荷传输的MOF列表，这些结果将有助于我们加深对多孔电子材料设计策略的理解。
