This annual review, the 50th volume in the series, provides critical analysis for anyone wanting to keep up to date with the literature on photochemistry and its applications. This essential volume combines reviews on the latest advances in photochemical research with specific topical highlights in the field. The volume starts with periodical reports of the recent literature on organic and computational aspects, including computational advances in photochemistry, chemiluminescence and dark photochemistry, organic aspects of photochemistry of alkenes, dienes and polyenes, aromatic...