Exfoliatable Layered 2D Honeycomb Crystals of Host-guest Complexes Networked by CH-π Hydrogen Bonds.

Studies of graphene show that robust chemical bonds such as covalent bonds with trigonal-planar atoms afford layered atomic 2D crystals possessing unique properties. Although layered molecular crystals are of interest to diversify elements and structures of 2D materials, the structural diversity of molecules as well as weak intermolecular interactions inevitably makes the design to be one-off and individual. We herein report a versatile method to assemble layered molecular crystals.

A hybrid molecular peapod of sp- and sp-nanocarbons enabling ultrafast terahertz rotations.

The internal hollow space of carbon nanotubes provides a unique nanometre-sized space to capture various molecular entities. The inner space circumfused by sp-carbon networks can also encapsulate diamondoid molecules to afford sp/sp-hybrid nanocarbon peapods that have recently emerged as unique nanostructures. In this study, the sp/sp-hybrid peapods have been mimicked by adopting a cylindrical molecule and the smallest diamondoid, i.