1. George & Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI 02881, USA
2. Department of Biomedical & Pharmaceutical Sciences, University of Rhode Island, Kingston, RI, USA
3. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, USA
4. Department of Chemistry, Stony Brook University, Stony Brook, NY, USA