1. Department of Drug Delivery (DDEL), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, Campus E8.1, Saarbrücken 66123, Germany
2. Department of Chemistry, Faculty of Science and Education, Busitema University, P.O Box 236, Tororo 21435, Uganda
3. INM-Leibniz Institute for New Materials, Campus D2 2, Saarbrücken 66123, Germany
4. Department of Pharmacy, Saarland University, Saarbrücken 66123, Germany