1. School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K.
2. Department of Chemistry, Taibah University, P.O. Box 344, Almadinah Almonawarah, Saudi Arabia
3. Organic Materials Innovation Centre, School of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
4. Institute of Polymer Research, GKSS Research Centre Geesthacht GmbH, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany
5. A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Pr., 119991 Moscow, Russia