1. Institut Charles Sadron (CNRS-ULP), 6 rue Boussingault, 67083 Strasbourg, France, Department of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso, 31, 16146 Genova, Italy, Department of Macromolecular Science and Center for Applied Polymer Research, Case Western University, Cleveland, Ohio 44106-7202, and Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienciewicza 112, 90363 Łodz, Poland