Post-synthetic diamine-functionalization of MOF-74 type frameworks for effective carbon dioxide separation.

Post-synthetic methods are considered facile and effective for adjusting a material's properties. This Frontiers article highlights recent advances in the post-synthetic modifications of MOF-74 type frameworks, whose high-density exposed metal sites, arranged along the chain direction, are grafted by various diamines with different lengths and structures, leading to the tuning of CO2 adsorption capabilities.