This book provides readers with examples of the synthesis and applications of large molecules and molecular assemblies designed for their unusual shapes or forms, or for some analytical or synthetic purpose. The chapters address the differing concepts of molecules and materials. Numerous references to original literature and to reviews are included. The topic of synthetic dendrimers is presented along with a novel descriptive system (fractal notation), with which complicated but regularly-shaped molecules may be described in a highly condensed fachion. The authors include individuals who have published extensively in the fields of the various chapters. The volume is appropriate as a primary text in a specials topics course in advanced organic or polymer chemistry, or as a supplementary text for these courses or for materials sciences courses. This book should be of interest to advanced graduates and graduate students in chemistry and related disciplines; and academic, industrial and government scientists in organic, inorganic, polymer and physical chemistry, biomedical and material sciences.