1. Abteilung Experimentelle Physik, Universität Ulm, Albert Einstein Allee 11, D-89069 Ulm, Germany; Max-Planck-Institut für Polymerforschung, Ackermannweg 10, D-55021 Mainz, Germany; Lviv Department of Physical Chemistry Institute, National Academy of Sciences, 3a Naukova, Lviv 290053, Ukraine; and Department of Organic Chemistry, Lviv Polytechnic State University, 12 S. Bandera, Lviv 290646, Ukraine