1. Department
of Chemistry, Saint
Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof,
Russian Federation
2. Department
of Chemistry, University
of Jyväskylä, Finland, P.O. Box 35, FI-40014 University
of Jyväskylä, Finland
3. Institute of Macromolecular Compounds
of Russian Academy of Sciences, V.O. Bolshoii Pr. 31, 199004 Saint
Petersburg, Russian Federation