An overview of the advantages and potential uses of organic solids in modern materials science. Late 1990s approaches to the design of solid architectures and nanostructures are stressed, and future prospects and limitations of this area are discussed.

Considering the high level of our knowledge concerning covalent bond formation in the organic chemistry of molecules, our understanding of the principles involved in organic solid design is almost in its infancy. While chemists today are able to synthesize organic molecules of very high complexity using sophisticated methods of preparation, they lack general approaches enabling them to reliably predict organic crystalline or solid structures from molecular descriptors - no matter how simple they are. On the other hand, nearly all the organic matter surrounding us is not in the single-molecule...

1. F.H. Kohnke, J. Mathias, J.F. Stoddart: Substrate-Directed Synthesis: The Rapid Assembly of Novel Macropolycyclic Structures via Stereoregular Diels-Alder Oligomerizations 2. S.C. Zimmerman: Rigid Molecular Tweezers as Hosts for the Complexation of Neutral Guests 3. A. Collet, J.-P. Dutasta, B. Lozach, J. Canceill: Cyclotriveratrylenes and Cryptophanes: Their Synthesis and Applications to Host-Guest Chemistry and to the Design of New Materials 4. J.-C. Chambron, Ch.D. Dietrich-Buchecker, S. Misumi: From Classical Chirality to Topologically Chiral Catenands and Knots 5. S. Misumi:...

1. F.H. Kohnke, J. Mathias, J.F. Stoddart: Substrate-Directed Synthesis: The Rapid Assembly of Novel Macropolycyclic Structures via Stereoregular Diels-Alder Oligomerizations 2. S.C. Zimmerman: Rigid Molecular Tweezers as Hosts for the Complexation of Neutral Guests 3. A. Collet, J.-P. Dutasta, B. Lozach, J. Canceill: Cyclotriveratrylenes and Cryptophanes: Their Synthesis and Applications to Host-Guest Chemistry and to the Design of New Materials 4. J.-C. Chambron, Ch.D. Dietrich-Buchecker, S. Misumi: From Classical Chirality to Topologically Chiral Catenands and Knots 5. S. Misumi:...

Der groBflachige Braunkohletagebau bedeutet eine drastische Veranderung des Natur- und Landschaftshaushalts. Zur Herstellung nachhaltiger Bergbaufolgeland schaften sind haufig umfangreiche Rekultivierungsmaf3nahmen notwendig. Nach der Wiedervereinigung der beiden deutschen Staaten erhOhte sich der Rekultivie rungsbedarf in den neuen BundesUindem deutlich, da eine Vielzahl von Tagebauen auBerplanma.l3ig stillgelegt wurde. Zudem waren groBe, yom Tagebau in Anspruch genommene Landschaftsteile offen geblieben und standen zur Rekultivierung an. Vor diesem Hintergrund wurde im Niederlausitzer...