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GREGORY J. SZULCZEWSKIAssociate ProfessorANALYTICAL/PHYSICAL CHEMISTRY B.S., 1989, University of Michigan; Ph.D., 1995, Wayne State University; Postdoctoral Associate, 1995-1997, University of Texas. office: 1088D Shelby Hall affiliations: Center for Materials for Information Technology, Coalition for Biomolecular Products |
Research Interests
Research in our group is focused on the growth, modification and characterization of surfaces and interfaces for applications in sensors, energetic materials, catalysis, and molecular electronics and data storage. Students in my group us a variety of surface analysis techniques including scanning probe microscopy, x-ray photoelectron spectroscopy, temperature programmed desorption, ellipsometry, and surface plasmon spectroscopy. Below is a description of some of the current projects in the group.
Surface and materials chemistry
Growth and characterization of half-metallic ferromagnetic films for organic spintronics
A current project involves the growth of semiconducting organic films on half-metallic ferromagnetic substrates to fabricate organic spin-valves. This research is supported through the NSF funded Materials Research Science and Engineering Center on campus.
Growth and characterization of metals on nitramines
This project involves the deposition and characterization of combustible metals on nitramines. We are collaborating with scientists at the Naval Warfare Center to increase the performance of underwater energetic materials. The Office of Naval Research funds this work.
Nanoscience
Molecular memory
We are studying charge storage in redox-gradient dendrimers synthesized by Dr. Blackstock through a variety of scanning probe microscopy and electrochemical methods. The long-term goal of this project is to realize an ultra high-density molecular based memory. The research is supported through the NSF funded Materials Research Science and Engineering Center on campus.
Representative Publications
"Tunneling magnetoresistance observed in La0.67Sr0.33MnO3/organic molecule/Co junctions." Xu, W.; Szulczewski, G. J.; LeClair, P.; Navarrete, I.; Schad, R.; Miao, G.; Guo, H.; Gupta, A. Appl. Phys. Lett. 90, 072506/1-072506/3 (2007).
"Interfaces between Metal and Arylamine Molecular Films As Probed with the Anode Interfacial Engineering Approach in Single-Layer Organic Diodes." Li, J. C.; Blackstock, S. C.; Szulczewski, G. J. J. Phys. Chem. B 110, 17493-17497 (2006).
"Patterned Redox Arrays of Polyarylamines III. Effect of molecular structure and oxidation potential on film morphology and hole-injection in single-layer organic diodes" Li, J. C.; Kim, K.-Y.; Blackstock, S.C.; Szulczewski, G. J. Chem. Mater. 16 (2004) 4711-4714
"Electrical Rectification in a Langmuir-Blodgett Monolayer of Dimethyanilinoazafullerene Sandwiched Between Gold Electrodes” Metzger, R. M.; Baldwin, J. W.; Shumate, W. J.; Peterson, I. R.; Mani, P.; Mankey, G. J.; Morris, T.; Szulczewski, G.; Bosi, S.; Prato, M.; Comito, M.; Rubin, Y. J. Phys. Chem. B 107 (2003) 1021-1027.
"Measurement of the chemical and morphological changes that occur on gold surfaces following thermal desorption and acid dissolution” Morris, T.; Sun, J.; G. Szulczewski Analytica Chimica Acta 496 (2003) 279-287.
"Synthesis and characterization of gold sulfide nanoparticles” T. Morris, H. Copeland, and G. Szulczewski Langmuir, 18 (2002) 535.
"A spectroscopic ellipsometry, surface plasmon resonance and x-ray photoelectron spectroscopy study of Hg adsorption on gold surfaces” T. Morris and G. Szulczewski Langmuir, 18 (2002) 2260.
”Patterned Redox Arrays of polyarylamines II. Growth of thin films and their electrochemical behavior” K.-Y.Kim, J. D. Hassenzahl, T. D. Selby, G. J. Szulczewski, S. C. Blackstock, Chem. Mat. 14 (2002) 1691.
"A Thiol-Substituted Carotenoid Self-Assembles on Gold Surfaces" D. Liu, G. J. Szulczewski, L. D. Kispert, A. Primak, T. A. Moore, A. L. Moore, and D. Gust J. Phys. Chem. B 106 (2002) 2933.
"Evaluating the role of coinage metal films in the detection of mercury vapor by surface plasmon resonance spectroscopy” T. Morris and G. Szulczewski Langmuir 18 (2002) 5823.
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