1. Laboratory for Functional Polymers, Empa, Swiss Federal Institute for Materials Science and Technology , Dübendorf, Switzerland
2. Institut des Matériaux, Ecole Polytechnique Fédérale de Lausanne EPFL , Lausanne, Switzerland
3. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne EPFL , Lausanne, Switzerland