Gregory Kalyuzhny Assistant Professor Analytical and Nanomaterials Chemistry Office: GMCS 213C,   Lab: CSL 402 Office Phone: 619-594-1596   Lab: 619-594-6196   Fax: 619-594-4634 e-mail: cpgregor at sciences.sdsu.edu Education/Appointments M.S. Novosibirsk State University (with Vladimir Semikolenov) Ph.D. Weizmann Institute of Science (with Israel Rubinstein) Postdoc, Univesity of Texas at Austin (with Allen J. Bard) Postdoc, Univesity of North Carolina at Chapel Hill (with Royce W. Murray)

Research Interests

Our research interests lie at the interface of analytical and material chemistry and focus at the synthesis of semiconductor nanomaterials and their applications for building various electronic devices and sensors.

Possible applications of organic semiconductors such as low cost large screens, solar cells, electronic paper and disposable electronic circuits made these materials one of the most active areas of research during last fifteen years. Still at least 99.99% of electronics which we use today are based on inorganic materials. The main reason is low durability of organic semiconductors. One of the possible solutions to this problem is replacing some organic components with nanocrystals of semiconductors and metals (also known as quantum dots) which benefit both from high stability of inorganic materials and versatility of organic substances.

The main focus of our research is building various electronic devices based on nanocrystals of semiconductor and metals. Our more specific research interests include: Synthesis of semiconducting nanomaterials with desired optoelectronic and chemical properties Mechanism of ion and charge transport in thin films of organic semiconductors, nanomaterials and redox polymers; environmental effects on charge transfer for sensing applications Mechanism of electroluminescence in devices based on semiconducting nanocrystals The types of electronic devices include: Light-emitting diodes (LEDs) Field effect transistors (FETs) and light-emitting field effect transistors (LEFETs - see Figure on the right) Sensors Solar cells

Selected Publications

• Wang GL, Guo R, Kalyuzhny G., Choi JP, Murray RW "NIR luminescence intensities increase linearly with proportion of polar thiolate ligands in protecting monolayers of Au₃₈ and Au₁₄₀ quantum dots," Journal of Physical Chemistry B in press (2006).
• Kalyuzhny G, Murray RW "Ligand effects on optical properties of CdSe nanocrystals," Journal of Physical Chemistry B 109 7012-7021 (2005).
• Kalyuzhny G, Buda M, McNeill J, et al. "Stability of thin-film solid-state electroluminescent devices based on tris(2,2 '-bipyridine)ruthenium(II) complexes," Journal of the American Chemical Society 125 6272-6283 (2003).
• Kalyuzhny G, Vaskevich A, Schneeweiss MA, et al. "Transmission surface-plasmon resonance (T-SPR) measurements for monitoring adsorption on ultrathin gold island films," Chemistry-A European Journal 8 3850-3857 (2002).
• Buda M, Kalyuzhny G, Bard AJ "Thin-film solid-state electroluminescent devices based on tris(2,2 '-bipyridine)ruthenium(II) complexes," Journal of the American Chemical Society 124 6090-6098 (2002).
• Kalyuzhny G, Schneeweiss MA, Shanzer A, et al. "Differential plasmon spectroscopy as a tool for monitoring molecular binding to ultrathin gold films ," Journal of the American Chemical Society 123 3177-3178 (2001).

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