博彩平台

 

Dr. Steven L. Bernasek, Professor of Chemistry at Princeton University, is an experimental chemist with research interests in the area of surface chemistry and chemical physics. His research is concerned primarily with the dynamics of heterogenous reactions, and the chemistry of heterogeneous catalysis, electronic materials and corrosion inhibition. 

Dr. Bernasek graduated from Kansas State University with a B.S. in chemistry, magna cum laude, in 1971. He received his Ph.D. in physical chemistry from the University of California, Berkeley in 1975. He was an NSF Graduate Fellow at Berkeley and also served as a teaching assistant and research assistant during that time. Dr. Bernasek also spent two summers as a radiochemist at the Lawrence Livermore Laboratory in Livermore, California. After receiving his Ph.D. in January of 1975, Dr. Bernasek was a postdoctoral fellow at the Lawrence Berkeley Laboratory for six months. 

In July of 1975 Dr. Bernasek came to Princeton as an Assistant Professor of Chemistry. He was promoted to Associate Professor in 1981, and to Professor of Chemistry in 1986. He teaches Honors Freshman Chemistry, as well as advanced courses in physical chemistry, solid state chemistry, and surface reaction dynamics. He is an Associated Faculty Member of the Princeton Research Institute for the Science and Technology of Materials and the Princeton Environmental Institute, and a member of the Executive Committee for the Program in Plasma Science and Technology.

The application of gas phase molecular reaction dynamics tools to the study of heterogeneous reactions has been the major focus of Dr. Bernasek’s research. He has contributed to our understanding of surface structural analysis, to the study of transition metal compound surfaces, to the dynamics of small molecule surface reactions on iron, molybdenum, and platinum, and to the investigation of energy transfer in surface reactions. He has published over 200 papers appearing in such journals as Physical Review, Physical Review Letters, Journal of Chemical Physics, Journal of Physical Chemistry, Journal of the American Chemical Society, Langmuir, and Surface Science. He has co-edited four books, and is the author of the monograph Heterogeneous Reaction Dynamics. He has advised over forty-five Ph.D. students and thirty postdoctoral associates in his laboratory at Princeton. He has lectured extensively at U.S. universities and abroad. Dr. Bernasek was elected a Fellow of the AAAS in 1994, and a Fellow of the AVS in 2001. In 1981, he was awarded the Exxon Faculty Fellowship in Solid State Chemistry, by the Division of Inorganic Chemistry of the American Chemical Society. He received the ACS Arthur W. Adamson Award for Distinguished Service in the Advancement of Surface Chemistry in 2006. In 1986, 1990, and 2007 he received a Research Fellowship from the Alexander von Humboldt Foundation for study in Germany. He was a Visiting Fellow at JILA in 1999, and has been a Distinguished Visiting Professor several times at the National University of Singapore. 

 

 

 

Organic Monolayers in Organic Electronic Devices

 

Charge injection barriers occur at interfaces in hybrid electronic devices such as organic light emitting diodes (OLEDs) and organic thin film transistors (OTFTs). Ordered monolayers of organometallic complexes may be important in optoelectronic devices and may also be used in sensor applications. Understanding and modification of these various interfaces can be used to affect performance in the device. Structure of the overlayer is also crucial to its performance. Surface dipole manipulation is one route to control this charge injection barrier. Another is to prepare strongly attached doped layers at the interface via appropriate self-assembly routes. We describe methods of surface functionalization that allow the realization of this barrier control on indium tin oxide surfaces used in OLED devices. These routes focus on ligand exchange chemistry or phosphonate self-assembled monolayer formation followed by carrier doping, and result in considerably improved OLED performance. Similar methods have been used to fashion improved thin film transistor devices on silicon substrates, and examples of this approach are discussed. Structural and compositional studies of adsorbed organometallic complexes, particularly metal containing porphyrin complexes, have been carried out, with an eye toward sensor applications. Characterization of the various organic monolayer interfaces formed, and the device performance based on them are presented.