1. Biological
and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
2. Department
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
3. Department
of Chemistry and Polymer Science, Stellenbosch University, 7600 Stellenbosch, Republic of South Africa