1. R. P. Andres, J. D. Bielefeld, W. J. Mahoney, R. G. Osifchin, School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, USA.
2. J. I. Henderson and C. P. Kubiak, Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA.
3. D. B. Janes and V. R. Kolagunta, School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907, USA.