1. Department of Chemistry of Oligomers and Netted Polymers Institute of Macromolecular Chemistry National Academy of Sciences of Ukraine 48 Kharkivske Shose Kyiv 02160 Ukraine
2. Department of Materials Science and Engineering Clemson University 161 Sirrine Hall, 515 Calhoun Drive Clemson SC 29634 USA
3. Department of Physics and Astronomy University of Nebraska‐Lincoln 208 Theodore Jorgensen Hall, 855 N 16th St. Lincoln NE 68588 USA
4. State Scientific Institution “Institute for Single Crystals” NAS of Ukraine 60 Nauky Ave. Kharkiv 61072 Ukraine
5. V.N. Karazin Kharkiv National University 4 Svobody Square Kharkiv 61022 Ukraine