Spectroscopic Evidence for the Structure Directing Role of the Solvent in the Synthesis of Two Iron Carboxylates

摘要

Metal-organic framework materials (MOFs) are crystalline solids that have inorganic building units covalently bonded to organic molecules, typically polycarboxylates, to form three-dimensional structures with different porosities. The ability to precisely design the structure of MOFs for specific applications, such as for gas storage and separation, catalysis, drug delivery, and batteries, is considered to be one of their most important advantages. Some general principles for controlling the formation of targeted MOFs have been established by simply correlating their crystal structures and synthesis conditions during classical or high-throughput syntheses. Very few studies have gone further by also highlighting the formation mechanism and detecting the fundamental building blocks of growth and/or intermediate phases because such investigations appear to be a great experimental challenge.