Content: Front Matter; Preface; Contents; Review of the period July 2007-December 2009; Recent trends in computational photochemistry; Light induced reactions in cryogenic matrices; Dynamics and photophysics of oligomers and polymers; Alkenes, alkynes, dienes, polyenes; Oxygen-containing functions; Photochemistry of aromatic compounds; Functions containing a heteroatom different from oxygen; Photophysics of transition metal complexes; Photochemical and photocatalytic properties of transition-metal compounds;New materials for sensitized photo-oxygenation; Prebiotic photochemistry; Industrial applications of photochemistry: automotive coatings and beyond; Trends in photolithography materials