ALT Metal-organic frameworks are crystalline, porous materials that have proven to be excellent host matrices for encapsulating guest molecules. This poster shows the main problem of current encapsulation strategies, and that is the lack of control over the encapsulation process in terms of the solubility of the components used and the fact that the solvent competes with the guest to occupy the pores of the framework. Here, a fast and green mechanochemical approach has proven to be the ultimate way to overcome these issues as it requires only traces of solvent. Ball milling allowed stoichiometrically controlled encapsulation and provided four C60@ ZIF-8 crystalline materials containing 15, 30, 60, and 100 mol % of fullerene entrapped in the available pores of the sodalite ZIF-8 while solution-based strategies resulted in minimal load. The fullerenes contained within the ZIF-8 matrix show properties of isolated molecules.