1. Complex Assemblies of Soft Matter Laboratory (COMPASS); UMI 3254; CNRS-Solvay-University of Pennsylvania; RIC; Bristol PA 19007 USA
2. Department of Chemistry and Department of Materials Science and Engineering; University of Pennsylvania; Philadelphia PA 19104 USA
3. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS); CNRS-Université de Strasbourg; UMR 7504 67034 Strasbourg France