1. The
School of Chemistry and ‡The School of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
2. Makromolekulare
Chemie, Universität Freiburg, Stefan-Meier-Str. 31, 79104 Freiburg, Germany
3. Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, 15782-Santuiago
de Compostela, Spain