About the Authors

Hai Li

Affiliation Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia, United States of America

Lesley H. Greene

lgreene@odu.edu

Affiliation Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, Virginia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HL LHG. Performed the experiments: HL. Analyzed the data: HL LHG. Contributed reagents/materials/analysis tools: LHG. Wrote the paper: HL LHG.