1. Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana−Champaign, Champaign, Illinois 61801, United States
2. Department of Chemistry, Rice University, Houston, Texas 77005, United States
3. Office of Research, Rice University, Houston, Texas 77005, United States
4. Danville Area Community College, 2000 East Main Street, Danville, Illinois 61832, United States
5. Department of Electrical and Computer Engineering and Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
6. Center for Biophysics and Quantitative Biology, C−I College of Medicine, and Department of Physics, University of Illinois at Urbana−Champaign, Champaign, Illinois 61801, United States