chapter 1 Recent Advances in Di--methane Photochemistry: A New Look at a Classical Reaction / chapter 2 The Photo-Fries Rearrangement / chapter 3 The Characterization and Reactivity of Photochemically Generated Phenylene Bis(diradical) Species as Revealed by Matrix Isolation Spectroscopy and Computational Chemistry / chapter 4 Photoinduced-Electron-Transfer Initiated Reactions in Organic Chemistry / chapter 5 Design and Fine Control of Photoinduced Electron Transfer / chapter 6 Molecular Oxygenations in Zeolites -- chapter 7 Organic�Inorganic Composites as Photonic Antenna Marc Meyer, and Gion Calzaferri / chapter 8 Photo-Switching Spiropyrans and Related Compounds