|
|
This collbaration project has been initiated by Professor
Tatyana E. Polenova (Department of Chemistry and Biochemistry, University
of Delaware). It is built on extremely well developed synthetic capabilities
of Professor
Lynn C. Francesconi (Hunter College) to synthesize polyoxometallic
systems. Polyoxometalates (POMs) are very interesting materials and our
groups' participation in this collaboration is focused on their spectroscopic
characteriazation and catalytic analysis. High pressure - low pressure
infrared cell will be built to fit the existing FTIR spectrometer to study
the effects of polyoxometallate preparation on the chemisty of oxitation
reactions. The majority of these studies involves infrared transmission
experiments. However, other surface analytical techniques, such as NEXAFS,
XPS, and thermal desorption are also utilized. Besides the experimental
investigation, we focus on the theoretical description of the polyoxometallic
systems with the help of Dr. Olga Dmitrienko
(University of Delaware). Structures similar to the one depicted in figure
1 are studied with respect to thermal and electrovoltaic changes and as
potential catalytic systems in oxidation of simple hydrocarbons.
|
|
|
Relevant Publications: [1] Wingrave, J. and Teplyakov, A. V. Infrared spectrometer attachment assembly for use with vacuum and high-pressure cells. J. Vac. Sci. Technol. A 2003, 21(5), 1800-1801. [2] Dmitrenko, O.; Huang, W.; Polenova, T. E.; Francesconi, L. C.; Wingrave, J. A. and Teplyakov, A. V. Effect of Cations in Infrared and Computational Analysis of Vanadium-Containing Six-Coordinate Oxotungstates. J. Phys. Chem. B. 2003, 107, 7747-7752. [3] Watras, M. J. and Teplyakov, A. V. An Infrared and Computational Investigation of Vanadium-Substituted Keggin [PVnW12-nO40](n+3)- Polyoxometallic Anions. J. Phys. Chem. B, 2005, 109, 8928-8934. |