1. International Centre for Science and High Technology, UNIDO, AREA Science Park, Padriciano 99, I-34012 Trieste, Italy, Nanoscience and Technology Program, Graduate School, and Center of Innovative Nanotechnology, Chulalongkorn University, Phayathai Road, Pathumwan, 10330 Bangkok, Thailand, National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia, and Cancer Research Institute, Slovak Academy of Sciences, Vlarska 7, SK-83391 Bratislava, Slovakia