Classic chemistry

Toma et al. 2004, "{trans-1,4-Bis[(4-pyridyl)ethenyl]benzene}(2,2'-bipyridine)ruthenium(II) Complexes and Their Supramolecular Assemblies with β-Cyclodextrin," Inorg. Chem. 43:3521.

You don't have to be a chemist to appreciate the graphical abstract.

http://pubs.acs.org/doi/abs/10.1021/ic0352250