Explore the fascinating world of functional nanometer-sized clusters of transition metals with this essential guide from The Bookish Owl. Delve into the synthesis, properties, and diverse applications of these remarkable materials, which bridge the gap between metal atoms and nanocrystals. Discover their unique chemical and physical characteristics, differing significantly from larger nanoparticles and molecular compounds. This book highlights cutting-edge research and challenges in achieving size-controlled synthesis, understanding size-dependent properties, advanced characterization techniques, and innovative applications. Topics covered include organochalcogenolate-stabilized clusters, fluorescent silver and platinum nanoclusters, thiolate-protected Au and Ag clusters, DNA-templated clusters, and janus nanoparticles. An invaluable reference for researchers and a comprehensive guide for graduate students and industry professionals interested in functional nanomaterials and their applications.