Résumé
The pursuit of happiness: the molecules responsible for the emotions of reward and happiness have been entrapped within crystalline nano‐cages. Serotonin, dopamine and histamine, which are normally difficult to crystallize, have been easily captured in water within pyrene‐box cages made of pyrenetetrasulfonate anions and guanidinium cations. Through this crystallization, a greater amount of structural information on these precious neuromodulators can be obtained. For more details, see the Communication M. Barboiu et al. on page 4037 ff.