Distinguished Professor, Chemistry and Dean of College of Arts and Sciences
Research Interests Education
- Vordiplom, 1986, Philipps-Universität-Marburg, Germany
- Dr. rer. nat., 1991, Philipps-Universität-Marburg, Germany
- Postdoctoral Fellow, 1990-1991, University of California, Davis
Honors & Awards
- NSF Career Award
- Karcher Lectureship, University of Oklahoma
- Visiting Professor, Monash University, Australia, 2003
- Visiting Professor, University of Auckland, New Zealand, 2003
- CHE 109/119: General Chemistry, Honors & Majors
- CHE 129/139: General Chemistry Laboratory, Honors & Majors
- CHE 411/611: Inorganic Chemistry
- CHE 422/622: Inorganic Laboratory Techniques
- CHE 600: Inorganic Chemistry of Main Group Elements
The Ruhlandt group's research focus is the chemistry of the heavy alkali and alkaline earth and selected rare earth metals. Particular research interests lie in the preparation of novel compounds with applications in polymerization and synthetic chemistry, the development of novel source materials for MOCVD applications, and the preparation of biomimetic calcium phosphonates to be used in bone cements and as bone scaffolding material.
Our second major research focus is the preparation of novel precursor materials for MOCVD leading to alkaline earth metal containing solid-state materials. Solid-state materials containing group 2 elements range from insulators to high temperature superconductors. Widely recognized are capacitance-based devices such as dynamic random access memory (DRAM) circuits. These require materials with a high dielectric performance, as displayed by alkaline earth metal titanates MTiO3 (M= Sr, Ba or mixtures thereof). Other applications include high temperature superconductors such as YBa2Cu3O7-δ, Bi2Sr2CaCu2O8-δ and Tl2Ba2Ca2Cu3O8 with a Tc as high as 134 K. Alkaline earth metals are also essential in flat panel displays based on electroluminesce technology. These contain a doped dielectric layer, typically a binary metal sulfide where the metal is either Ca, Sr, or Zn. Electroluminescent displays are not shock sensitive like liquid crystal displays, and do not require backlighting, cross polarizers or filters. Moreover, the displays are brighter than the more common LCD counterparts and display higher contrast. The preparation of the MOCVD precursors requires thermally stable, highly volatile precursor materials to enable the deposition of thin films. With a continuing need for optimal precursors, our work is geared towards the development of facile synthetic routes and the introduction of novel ligand systems. Research methods in the laboratory include inert gas chemistry both on a Schlenk line and in the glove box, low temperature crystallography, various NMR spectroscopic methods, IR spectroscopy, thermogravimetrical analysis, and more.
- Deacon, G. B.; Junk, P. C.; Moxey, G. J.; Ruhlandt-Senge, K.; St. Prix, C.; Zuniga, M. F. Charge-Separated and Molecular Heterobimetallic Rare Earth - Rare Earth and Alkaline Earth - Rare Earth Aryloxo Complexes Featuring Intramolecular Metal-π-arene Interactions. Chem., Eur. J. 2009, 5503-5519.
- Gillett-Kunnath, M. M.; MacLellan, J. G.; Forsyth, C. M.; Andrews, P. C., Deacon, G. B.; Ruhlandt-Senge, K. BiPh3 – A convenient synthon for heavy alkaline earth metal amides. Chem. Commun. 2008, 4490-4492.
- Guino-o, M. A.; Campana, C. F.; Ruhlandt-Senge, K. A unique heterobimetallic calcium benzylate - an organometallic mixed metal species involving a heavy alkaline earth metal. Chem. Commun. 2008, 1692-1694.
- Alexander, J. S.; Teng, W.; Allis, D. G.; Ruhlandt-Senge, K. Alkali metal diphenylmethanides: synthetic, calculations and structural studies. Chem., Eur. J. 2007, 13, 9899-9911.
- Zuniga, M. F.; Deacon. G. B.; Ruhlandt-Senge, K. New structural features in heavy alkaline earth metal chemistry- molecular heterobimetallic Group I/Ba complexes. Chem., Eur. J. 2007, 13, 1921-1928.