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To investigate microstructural evolution and plastic deformation under tension, the rapid solidification processes of the Ni47Co53 alloy are first simulated by molecular dynamics methods at cooling rates of 1011, 1012 and 1013 K s−1. Then, the uniaxial tension simulation study was conducted on a single crystal, polycrystal and metallic glass, which were formed during the rapid solidification. The results show that the dislocation loops evolution in the crystal is caused by the slips and proliferation of stacking faults, and in terms of plastic deformation, the single crystal is carried by stacking faults, while a polycrystal is carried by grain boundaries. A metallic glass formed at the critical cooling rate and crystallized under tension, the plastic deformation is carried by grain boundaries and stacking faults in metallic glass. Ultimately, the stacking faults are the most resistant to plastic deformation. This study has great significance for the study of the mechanical properties of single crystals, polycrystals and metallic glass. [ABSTRACT FROM AUTHOR]

Various decomposition products of C–O ether bond cleavage have been trapped in supramolecular architectures as templates based on hydrothermal reaction of three-component metal–carboxylate–phen, which not only results in the formation of [5]pseudorotaxane structure, 3D porous framework and supramolecular structure, but also provides directly crystallographic evidence to explain how the C–O ether bond breaks during decomposition. [ABSTRACT FROM AUTHOR]

Three novel luminescent metal–organic frameworks [Zn(1,2-BBOMB)(4,4′-bipy)1/2]n(1), [Zn2(1,3-BBOMB)2(4,4′-bipy)]n(2) and [Zn4(1,2-BBOMB)4(bpp)2]n(3) have been synthesized by combining the conformationally flexible V-shaped long multicarboxylate ligands and the rigid 4,4′-bipy or flexible bpp ligands with zinc ions under hydrothermal conditions. It is worth mentioning that the layers observed in the three compounds can be reduced to the same 6-connected topological net with (22·48·65) symbol. These complexes display a structural evolution from a two-dimensional (2D) polyrotaxane and polycatenane framework to a three-dimensional (3D) architecture with coexistence of polyrotaxane, polycatenane and interdigitation. The three species contain loops and rods that are interlaced in a highly rare parallel fashion, but with twofold (2D → 2D), triply (2D → 2D) and triply (2D → 3D) entangled features in complexes 1, 2and 3, respectively. Furthermore, the rotaxane-like interactions between the loops and the rods exhibit a progressive change from one loop interacting with a single rod, to one loop interacting with two identical rods, to finally one loop interacting with two conformationally different rods in complexes 1, 2and 3, respectively. Photoluminescence studies revealed that these complexes are potential violet, blue and green luminescent materials. The thermal stabilities of these complexes were also discussed. [ABSTRACT FROM AUTHOR]