1. Institut des Sciences Analytiques et de Physico‐Chimie pour l'Environnement et les Matériaux UMR 5254 CNRS UPPA Pau 64053 France
2. Institute of Macromolecular Compounds of the Russian Academy of Sciences St. Petersburg 199004 Russia
3. Physical Chemistry and Soft Matter Wageningen University Wageningen 6703 NB The Netherlands
4. Department of Chemistry UNC Chapel Hill NC 27599‐3290 USA