Abstract
Helical structures are constructed by successive fusion of anthracene units in a helicene-like manner like a dragon rising in a spiral. In the derivatives with four or more anthracene units, interlayer π⋅⋅⋅π interactions play an important role in the structures and properties of the polycyclic aromatic hydrocarbons. The helical inversion occurred via multistep mechanisms at relatively high barriers. This molecular design is valuable as a new helical motif based on the expanded and conjugated π systems. More information can be found in the Communication by S. Toyota et al. on page 4548.
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