Angewandte Chemie International Edition

Cover image for Vol. 53 Issue 28

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, Zeitschrift für Chemie

Cover Picture (Angew. Chem. Int. Ed. Engl. 2/1990)

29_02/1990The cover picture shows the simulated growth of colonies of Bryozoa, a marine invertebrate: the picture was provided by Dr. A. H. Cheetham, Smithsonian Institution, Washington, DC (see also A. H. Cheetham, L.-A. C. Hayek), Paleobiology 9 (1983) 240. During the initial stages of growth, the branches of the colony diverge. At higher generations, the branches converge and eventually suppress further growth owing to overcrowding. Such growth processes and the resulting structures can also serve as models for a new class of chemical compounds termed starburst dendrimers. These highly organized structures, which are of potential importance in both organic and macromolecular chemistry, are synthesized via reiterative reaction sequences. Further details on this new and aesthetically fascinating class of compounds are reported by D. A. Tomalia et al. on page 138ff.

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