1. Department of Chemistry and Biomolecular Science; Clarkson University; Potsdam NY 13699-5810 USA
2. Nanostructured Materials Lab; The University of Georgia; Athens 30602 USA
3. Chemistry Department; University of Central Florida; 4000 Central Florida Boulevard Orlando 32816-2366 USA
4. Institute of Nano- and Biotechnologies; Aachen University of Applied Sciences, Campus Jülich; Heinrich-Mußmann-Str. 1 52428 Jülich Germany
5. Institute of Bio- and Nanosystems; Research Centre Jülich GmbH; 52425 Jülich Germany