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Colloidal clathrate crystals self-assembled from hard polyhedral shapes in computer simulations are stabilized by entropy compartmentalization, whereby hosts and guests contribute unequally to the entropy. This creative solution to satisfying the laws of thermodynamics suggests new ways to make colloidal crystals with open cages and hierarchical host–guest structures.
Catenanes that are chiral owing to the relative orientation of their rings have always been referred to as ‘topologically chiral’. It is now shown that although in specific cases the stereochemistry is a topological property of the structure, the underlying stereogenic unit itself is not inherently topological in nature.
Serial rotation electron diffraction (SerialRED) enables rapid and reliable phase analysis and structure determination of complex polycrystalline materials that cannot be routinely characterized using X-ray diffraction. Five zeolite phases were identified in a single synthesis product by automated screening of hundreds of crystals, demonstrating the power of SerialRED for materials development.
Nanomachines are central to life and are becoming an important part of self-regulated nanotechnologies. Inspired by natural self-assembled nanosystems, it has been shown that artificial nanosystems can evolve and adopt regulatory functions upon fragmentation of their structures into multiple components that reassemble to form the same nanostructure.
