1. Laboratory
for Polymer Synthesis, KU Leuven, Celestijnenlaan 200F, Box 2404, B-3001 Heverlee, Belgium
2. Organic
Synthesis and Mass Spectrometry Laboratory, Research Institute for
Science and Engineering of Materials, University of Mons-UMONS, 20 Place
de Parc, B-7000 Mons, Belgium
3. Dipartimento
di Chimica Industriale “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy