A lot of chemistry journals have little pictures illustrating the core concept of the paper in the contents pages. (Have a look at the latest contents page for JACS if you have not come across this before).
This one in last month’s JACS is just adorable:
It is for the article ‘A Simple Molecular Machine Operated by Photoinduced Proton Transfer’
by Silvi et al.
It’s brilliant!
I have to say, that is cute!