Water-based synthesis and nitrate release properties of a Zr-based metal-organic framework derived from L-aspartic acid.

We report the synthesis and characterisation of a cationic metal-organic framework (MOF) based on Zr and L-aspartate and containing nitrate as an extra framework counteranion, named MIP-202-NO. The ion exchange properties of MIP-202-NO were preliminarily investigated to evaluate its potential as a platform for controlled release of nitrate, finding that it readily releases nitrate in aqueous solution.