Electrochemical and spectroelectrochemical characterization and ESR studies of cobalt tetrapyridinoporphyrazine compounds in DMSO solution

CHED 180

Jianguo Shao, jianguo.shao@mwsu.edu1, Juliette Commodore1, Baocheng Han, hanb@uww.edu2, and Christopher A. Hansen, chris.hansen@mwsu.edu1. (1) Department of Chemistry, Midwestern State University, 3410 Taft Blvd., Wichita Falls, TX 76308, (2) Department of Chemistry, University of Wisconsin-Whitewater, Whitewater, WI 53190
Two cobalt tetrapyridinoporphyrazine compounds were examined in DMSO solution as to their electrochemical and spectroelectrochemical properties and these results were compared with those of the unsubstituted cobalt phthalocyanine. The aggregation phenomenon was observed for both derivatives in DMSO only when the investigated concentrations are greater than 10-5 M. Both compounds undergo one oxidation and three reductions. The thin-layer UV-visible spectroelectrochemistry confirmed that the first oxidation and first reduction take place on the central cobalt center while the second and third reductions occur on the macrocyclic ring of tetrapyridinoporphyrazine derivatives.
 

Undergraduate Research Poster Session
2:30 PM-4:30 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Chemical Education

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007