Chemistry not enough sexy?

Investigator Lorenzo Stievano writes:

This is the answer we needed to students that find chemistry not enough sexy! I would like you to notice the fine detail of the equilibrium double arrows: in chemistry, all equilibria are supposed to be dynamic.

Supramolecular.gif

The image is from the study

{trans-1,4-Bis[(4-pyridyl)ethenyl]benzene}(2,2′-bipyridine)ruthenium(II) Complexes and Their Supramolecular Assemblies with -Cyclodextrin,” Sergio H. Toma, et al., Inorg. Chem., 43 (11), 3521 -3527, 2004. 10.1021/ic0352250 S0020-1669(03)05225-X.

(To see an enlargement and details, click on the image).