Uranyl Hybrid Material Derived from In Situ Ligand Synthesis: Formation, Structure, and an Unusual Phase Transformation

摘要

Interest in the synthesis of uranyl (UO_2~(2+)) organic hybrid materials has resulted in a family of compounds with a broad range of structural topologies which have been studied for their interesting luminescent properties as well as potential applications in the fields of photocatalysis and photoelectric conversion.In an effort to expand the structural chemistry of uranyl hybrid materials we have explored the use of in situ ligand synthesis (ISLS). In these systems the ligands are formed during the hydro- or solvothermal synthesis of the hybrid material. While ISLS was initially observed as a serendipitous phenomenon, recent efforts to harness these reactions have emerged. As such, many well-known organic reactions have been explored with the intention of promoting an organic reaction in the presence of inorganic building units. A common theme of ISLS is the conversion of poorly coordinating compounds into ligands with greater affinities for the particular metal being used. For instance, carboxylic acids have been formed by a variety of reactions.