In 1989 we published the first report of the metallamacrocyclic class now known as metallacrowns. These molecules began as simple analogues of crown ethers that substituted the methylene carbons of these molecules with heteroatoms, typically N and a transition element. Over the years we demonstrated that these molecules could form molecular triangles, squares, pentagons and other more complex shapes and could be used for the recognition of cations, anions and other guest molecules. Because of the molecular topology, these compounds have also been of interest in studies of molecular magnetism, particularly with bound lanthanides and for the generation of highly emissive species containing Zn(II) or Ga(III) and Ln(III) The development of these novel molecules will be elaborated in this presentation.

<b>Award Address</b> (ACS Award for Distinguished Service in the Advancement of Inorganic Chemistry sponsored by Strem Chemicals, Inc.). Metallacrowns: From fundamental supramolecular chemistry to SMMs and near IR optical imaging agents

251st National Meeting (2016)

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Award Address (ACS Award for Distinguished Service in the Advancement of Inorganic Chemistry sponsored by Strem Chemicals, Inc.). Metallacrowns: From fundamental supramolecular chemistry to SMMs and near IR optical imaging agents