1. ISOF−CNR, Area della Ricerca, Via P. Gobetti 101, 40129 Bologna, Italy; LCMT, UMR CNRS 6507, ENSICAEN, 6 Bd. Maréchal Juin, 14050 Caen, France; LEMM/SESO, UMR CNRS 6510, Université de Rennes 1, Institut de Chimie de Rennes, Campus de Beaulieu-Bat. 10C, 35042 Rennes, France; Dipartimento di Scienze e Tecnologie Avanzate, INSTM, UdR Alessandria, Corso Borsalino 54, 15100 Alessandria, Italy; and CRC-for Polymers, CSIRO Molecular Science, Bag 10, Clayton South, Victoria 3169, Australia