1. Photochemical Nanosciences Laboratory, Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy, Fax: +39‐051‐2099456, http://www.credi‐group.it
2. Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków, Poland
3. Interuniversity Center for the Chemical Conversion of Solar Energy, Bologna Unit, Via Selmi 2, 40126 Bologna, Italy
4. Faculty of Non‐Ferrous Metals, AGH University of Science and Technology, al. Mickiewicza 30, 30‐060 Kraków, Poland