Visiting professor: University of British Columbia, Vancouver, Canada 1972; Energy Research Center, Hebrew University of Jerusalem, Israel, 1979; University of Strasbourg, France, 1990; University of Leuven, Belgium, 1991; University of Bordeaux, France, 1994. Chairman: Gruppo Italiano di Fotochimica (1982–1986), European Photochemistry Association (1988–92); XII IUPAC Symposium on Photochemistry (1988); International Symposium on "Photochemistry and Photophysics of Coordination Compounds (since 1989, now Honorary Chairman); PhD course in Chemistry Sciences (2002–2007) e Laurea specialistica in Photochemistry and Chemistry of Materials (2004–2007), University of Bologna.
Director: Institute of Photochemistry and High Energy Radiations (FRAE), National Research Council (Italy), Bologna (1977–1988) and Center for the Photochemical Conversion of Solar Energy, University of Bologna (1981–1998). Member of the Scientific Committee of several international scientific journals. Member of the Scientific Committee of the Urban Plan for Sustainable Mobility (PUMS), of the Bologna metropolitan area (2008–).
Political activity: In 2009 he started the Science and Society interdisciplinary course at the University of Bologna with the aim of bridging the gap between University and City; it has long been hoping for the strengthening of similar initiatives for the cultural growth of the Metropolitan City. In 2014 he founded the Energia per l'Italia group,[2] formed by 22 professors and researchers of the University and of the most important research centers of Bologna, with the aim of offering the Government and local politicians guidelines to tackle the energy problem according to a broad perspective that includes scientific, social, environmental and cultural aspects.
Coordinator and editor: Supramolecular Photochemistry, NATO ASI Series n. 214, Reidel, Dordrecht (1987); Supramolecular Chemistry, NATO ASI Series n. 371, Reidel, Dordrecht (1992) (with L. De Cola); Guest Editor, Supramolecular Photochemistry, New J. Chem., N.7–8, vol. 20 (1996); Editor in chief of the Handbook on Electron Transfer in Chemistry, in five volumes, Wiley-VCH, Weinheim (2001); Topics in Current Chemistry, volumes 280 and 281 on Photochemistry and Photophysics of Coordination Compounds (2007).