The family of 2D van der Waals (vdW) layered materials has attracted immense interest because of continuous discoveries of unique and intriguing physical phenomena in new members and stacked heterostructures. [1][2][3] However, a few issues regarding scalability and integration have to be resolved prior to practical applications. Among them is control of the crystal orientation of 2D vdW films, which is still elusive. One immediate benefit of single-orientation growth is the elimination of The ability to control the crystal orientation of 2D van der Waals (vdW) layered materials grown on large-scale substrates is crucial for tailoring their electrical properties, as well as for integration of functional 2D devices. In general, multiple orientations, i.e., two or four orientations, appear through the crystal rotational symmetry matching between the material and its substrate. (1 0 1) surface. Moreover, thanks to the high interfacial strength with the underlying Cu, the single-orientation h-BN is free of thermal wrinkles, and exhibits a spatially homogeneous morphology and tunnel conductance. The findings point to a feasible approach to direct growth of singleorientation, wrinkle-free h-BN thin film for high-performance 2D electrical devices, and will be of benefit for controllable synthesis of other vdW materials. Here, it is reported that hexagonal boron nitride (h-BN), an ideal electric barrier in the family of 2D materials, has a single orientation on inclined Cu (1 0 1) surfaces, where the Cu planes are tilted from the (1 0 1) facet around specific in-plane axes. Density functional theory (DFT) calculation indicates that this is a manifestation of only one favored h-BN orientation with the minimum vdW energy on the inclined Cu

The dissolution of anhydrous iron bromide in a mixture of pyridine and acetonitrile, in the presence of an organic amine, results in the formation of an [Fe34] metal oxide molecule, structurally characterised by alternate layers of tetrahedral and octahedral FeIII ions connected by oxide and hydroxide ions. The outer shell of the complex is capped by a combination of pyridine molecules and bromide ions. Magnetic data, measured at temperatures as low as 0.4 K and fields up to 35 T, reveal competing antiferromagnetic exchange interactions; DFT calculations showing that the magnitudes of the coupling constants are highly dependent on both the Fe‐O‐Fe angles and Fe−O distances. The simplicity of the synthetic methodology, and the structural similarity between [Fe34], bulk iron oxides, previous FeIII–oxo cages, and polyoxometalates (POMs), hints that much larger molecular FeIII oxides can be made.

Dissolution of FeBr3 in a mixture of acetonitrile and 3,4-lutidine in the presence of an amine results in the formation of an [Fe30] molecular metal oxide containing alternating layers of tetrahedral and octahedral FeIII ions.

We find that the use of Au substrate allows fast, self-limited WS2 mono-layer growth using a simple sequential exposure pattern of low cost, low toxicity precursors, namely tungsten hexacarbonyl and...

The dissolution of anhydrous iron bromide in am ixture of pyridine and acetonitrile,i nt he presence of an organic amine,results in the formation of an [Fe 34 ]metal oxide molecule,s tructurally characterised by alternate layers of tetrahedral and octahedral Fe III ions connected by oxide and hydroxide ions.T he outer shell of the complex is capped by ac ombination of pyridine molecules and bromide ions. Magnetic data, measured at temperatures as lowa s0 .4 Ka nd fields up to 35 T, reveal competing antiferromagnetic exchange interactions;DFT calculations showing that the magnitudes of the coupling constants are highly dependent on both the Fe-O-Fe angles and Fe À Od istances.T he simplicity of the synthetic methodology,and the structural similarity between [Fe 34 ], bulk iron oxides,p revious Fe III -oxo cages,a nd polyoxometalates (POMs), hints that muchl arger molecular Fe III oxides can be made.