1. Contribution from the Vienna University of Technology, Institute of Applied Synthetic Chemistry (Division of Macromolecular Chemistry), Getreidemarkt 9/163/MC, 1060 Vienna, Austria, UPR 9021, CNRS, Immunologie et Chimie Thérapeutiques, IBMC, 15 Rue René Descartes, 67084 Strasbourg, France, and Christian Doppler Laboratory for Specific Adsorption Technologies in Medicine, Center for Biomedical Technology, Danube University Krems, Austria