1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
2. Institute of Macromolecular Chemistry, National Academy of Sciences of Ukraine, Kharkivske Shosse 48, Kyiv 02160, Ukraine
3. Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
4. Taras Shevchenko
National University of Kyiv, Volodymyrska Str. 64, 01601 Kyiv, Ukraine