We shall use a variety of neutron scattering experiments to analyse in unprecedented detail the binding interactions and dynamics between ammonia and metal-organic frameworks (MOFs). Three classes of MOF have been chosen to allow a broad examination of experimental conditions based on ammonia binding at open metal sites. A total of 3 days time on TOSCA is requested to extensively characterise the interactions and dynamics governing ammonia uptake. The neutron experiments will be supplemented by a suite of DFT calculations and further, non-neutron spectroscopic techniques, with the aim of establishing the origins of ammonia affinities in MOFs, enabling future application-driven research and providing valuable insight into desirable molecular features for strong and stable ammonia storage in MOFs to the community.