Accession Number : ADA116405

Title :   Mapping of the Energy Levels of Metallophthalocyanines via Electronic Spectroscopy, Electrochemistry, and Photochemistry.

Descriptive Note : Interim technical rept. Aug 80-Apr 81,


Personal Author(s) : Lever,A B P ; Licoccia,S ; Magnell,K ; Minor,P C ; Ramaswamy,B S

PDF Url : ADA116405

Report Date : 01 Jun 1982

Pagination or Media Count : 21

Abstract : The mapping of the energy levels in metallophthalocyanines is accomplished by a combination of electrochemistry, electronic spectroscopy, and photochemistry. This chapter reviews the electrochemical properties of metallopthalocyanines and includes a large amount of previously unpublished data. The results are rationalized in terms of the nature of the electron transfer, that is, redox at metal or ligand. Well-defined correlations are shown to exist between the ease of oxidation or reduction of the phthalocyanine ligand and the oxidation state, and/or polarizing power, of the metal ion. Solvent and ring substitution effects also are presented and explained. Charge transfer transition energies can be calculated directly from these data, and agreement between experiment and theory is excellent. Finally, the data are used to calculate both the photo-generated excited state redox energies and the thermodynamics of quenching by donors and acceptors. (Author)

Descriptors :   *Electrochemistry, *Electron spectroscopy, *Photochemical reactions, *Organometallic compounds, Molecular energy levels, Electron transfer, Electronic states, Phthalocyanines, Ligands, Charge transfer, Polymers, Oxidation reduction reactions

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE