Textbook in PDF format Visible light is an abundant source of energy. While the conversion of light energy into electrical energy (photovoltaics) is highly developed and commercialized, the use of visible light in chemical synthesis is far less explored. Chemical photocatalysts that mimic principles of biological photosynthesis utilize visible light to drive endothermic or kinetically hindered reactions. 2nd updated edition Treats cutting-edge topics: flavin photocatalysis, enantioselective photocatalysis, organic and inorganic semiconductors, photohydrogenation, and analytical methods with time-resolved spectroscopy Unique focus on visible light Early pioneers of organic photochemistry Photophysics of photocatalysts Flavin photocatalysis Templated enantioselective photocatalysis Photocatalysis with nucleic acids and peptides Photocatalytic decarboxylations Photoredox catalyzed α-functionalization of amines – visible light mediated carbon-carbon and carbon-hetero bond forming reactions Visible-light photoredox catalysis with [Ru(bpy)3]2+: General principles and the twentieth-century roots Homogeneous visible light mediated transition metal catalysis other than Ruthenium and Iridium Coupling photoredox and biomimetic catalysis for the visible-lightdriven oxygenation of organic compounds Synergistic visible light photoredox catalysis Excited radical anions and excited anions in visible light photoredox catalysis Metal complexes for photohydrogenation and hydrogen evolution Heterogeneous semiconductor photocatalysis Polyoxometalates in photocatalysis Description of excited states in photochemistry with theoretical methods Transient absorption with a streak camera Time resolved spectroscopy in photocatalysis