1. Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
2. Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, Oklahoma 74078, United States
3. Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, United States
4. Center for Advanced Infrared Biology College of Arts and Sciences, Oklahoma State University, Stillwater, Oklahoma 74078, United States