1. Institute of Chemistry, Organic Chemistry; Martin Luther University Halle-Wittenberg, Kurt-Mothes-Strasse 2; 06120 Halle/Saale Germany
2. Department of Chemistry; Federal University of Santa Catarina; 88040-900 Florianópolis Brazil
3. Department of Nonlinear Phenomena, Institute for Experimental Physics; Otto von Guericke University Magdeburg, Universitätsplatz 2; 39106 Magdeburg Germany
4. Department of Organic & Polymeric Materials; Tokyo Institute of Technology, O-okayama, Meguro-ku; Tokyo 152-8552 Japan