简介

National Research Council Postdoctoral Fellow, National Institute of Standards and Technology, 1983-85. Assistant Professor of Chemistry, Louisiana State University, 1985-91. Associate Professor of Chemistry, Louisiana State University, 1991. Associate Professor of Chemistry, Villanova University, 1991-97. Professor of Chemistry, Villanova University,1997-98. Professor of Chemistry, Drexel University, 1998 - present. Visiting Professor of Chemistry, University of Frankfurt (Germany), 2006-07. Visiting Fellow, Australian Centre for Research on Separation Science (ACROSS), University of Tasmania, 2015-16.