[1] Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Czech Republic
[2] Institute of Microelectronics, NCSR - Demokritos, Athens, Greece
[3] Department of Chemistry, Tsinghua University, China
[4] Department of Organic Chemistry, Prague Institute of Chemical Technology, Prague, Czech Republic
[5] Research Institute for Organic Syntheses, Czech Republic
[6] Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, Prague 6, 162 06, Czech Republic