1. Institute of Materials, Laboratory
of Macromolecular and Organic Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL) EPFL −
STI − IMX − LMOM, MXG 037, Station 12, 1015 Lausanne,
Switzerland
2. Department
of Materials, ETH Zürich, Switzerland
3. Department of Health Science & Technology, Food & Soft Materials, ETH Zürich, Switzerland