1. Department of Chemistry, University of Paderborn, Warburger Strasse 100, 33098
Paderborn, Germany
2. Department
of Biological Sciences
and Chemistry, College of Arts and Sciences, University of Nizwa, Birkat Al-Mouz, Nizwa 616, Sultanate of Oman
3. Department of Chemistry and Polymer
Science, University of Stellenbosch, P/Bag
X1Matieland 7602, South Africa
4. Karlsruhe Institute of Technology (KIT), DFG Centre for Functional Nanostructures,
Wolfgang Gaede Strasse 1, 76131 Karlsruhe, Germany