1. Departments of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, 101 Woodruff Circle Suite 2007, Atlanta, Georgia 30322, United States
2. Department of Chemistry, The University of Memphis, 411 Smith Chemistry Building, Memphis, Tennessee 38152, United States
3. Department of Hematology and Medical Oncology and the Winship Cancer Institute, Emory University, School of Medicine, 1365 Clifton Road, Atlanta, Georgia 30322, United States
4. Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States