1. Department of Chemistry and Department of Physics and Astronomy, University of California, Irvine, California, USA;,
2. Current affiliation: Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark
3. Université de Lyon, UJM–Saint-Etienne, IOGS, Laboratoire Hubert Curien, UMR CNRS 5516, Saint-Etienne, France
4. Dipartimento di Chimica Industriale, Università degli Studi di Bologna, Bologna, Italy