1 Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH B3 495 (Bâtiment CH) Station 6, Lausanne CH-1015, Switzerland. Electronic address: shuguang.yuan@gmail.com.
2 Faculty of Life Sciences, University of Bradford, Bradford, West Yorkshire BD7 1DP, UK.
3 Laboratory of Biomodeling, Faculty of Chemistry & Biological and Chemical Research Centre, University of Warsaw, ul. Pasteura 1, Warsaw 02-093, Poland.
4 Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH B3 495 (Bâtiment CH) Station 6, Lausanne CH-1015, Switzerland.