1. Center of Physics of the Universities of Minho and Porto, University of Minho, Braga 4710-057, Portugal
2. Nanochemistry Research Group, International Iberian Nanotechnology Laboratory, Braga 4715-330, Portugal
3. Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
4. Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
5. Laboratoire CRISMAT, UMR 6508, CNRS-ENSICAEN, Caen 14050, France
6. Institut Jean Lamour, UMR 7198 CNRS-Université de Lorraine, 2 Allée André Guinier-Campus ARTEM, BP 50840, CEDEX, Nancy 54011, France
7. Centro de Ciências e Tecnologias Nucleares (C2TN), Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Bobadela LRS 2695-066, Portugal
8. CMEMS─UMinho, University of Minho, Guimarães 4800-058, Portugal
9. LABBELS─Associate Laboratory, Braga/Guimarães, Portugal