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1997
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June
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Symposium: Applications of Inorganic Photochemistry
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Organometallic Photochemistry: Basic Principles and Applications to Materials Chemistry
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David R. Tyler
Department of Chemistry, University of Oregon, Eugene, OR 97403-1253
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June 1997
Vol. 74 No. 6
p. 668
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| Abstract |
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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 to generate multiply coordinatively unsaturated catalysts for epoxide polymerization. Homolytic dissociations of metal-ligand bonds are used to initiate radical chain polymerization reactions. Irradiation of organometallic compounds on surfaces can be used to derivatize the metal surface. In these processes, a metal-ligand bond is dissociated and then replaced by a functionalized ligand bearing a redox active metal center. These derivatized surfaces are potentially useful in the fabrication of microfabricated circuits.
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| More Information |
 Citation |
Tyler, David R. J. Chem. Educ. 1997 74 668.
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Keywords |
Inorganic Chemistry, Materials Science, Organometallics, Photochemistry, Surface Science
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History |
Created:
Last Updated: |
July 28, 1999
June 23, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
1997
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June
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668
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