1. Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
2. Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
3. Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
4. Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale) 06099, Germany
5. FORTH, Institute for Electronic Structure and Laser, Heraklion 70013, Greece
6. Department of Materials Science & Technology, University of Crete, Heraklion 70013, Greece