1. Department of Organic Chemistry, Igor Sikorsky Kiev Polytechnic Institute, Pr. Pobedy 37, 03056 Kiev, Ukraine
2. Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
and Center for Materials Research, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
3. Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
4. Stanford Institute for Materials and Energy Sciences, Stanford, California 94305, United States