Abstract

An overview is presented of organometallic photochemistry and its applications to materials chemistry. The excited states of typical organometallic complexes include ligand field excited states, metal-to-ligand charge-transfer excited states, ligand-to-metal charge-transfer excited states, Rydberg excited states, and excited states associated with metal-metal bonds. In general, each of these excited states leads to a particular type of photochemical reaction. Ligand field excited states typically lead to metal-ligand bond heterolysis, charge-transfer states to redox processes, and Rydberg states to homolytic metal-ligand bond dissociation. Excitations involving metal-metal bond states lead to metal-metal bond homolysis. Each of these photoprocesses has uses in materials chemistry. Metal-ligand bond dissociations are used to deposit thin films of metals or alloys. The thin films thus produced are used in the manufacture of semiconductors or microcircuitry. Likewise, metal-ligand bond dissociations are used...

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