Trennung von Fullerenen im Gramm-Massstab mittels GPC; Verbesserung des Trennverfahrens durch Verwendung neuer stationaerer Phase; Untersuchung der Fullerene und Reaktionsprodukte unter materialwissenschaftlichen Gesichtspunkten Abschlussbericht

For the application of fullerenes in the organic chemistry, two basic requirements must be fulfilled: 1. a method for the large scale separation of fullerenes as well as functionalized fullerenes must be available and 2. a method for the functionalisation of fullerenes is necessary. The functionalized fullerenes, which should be stable and well soluble, must be accessible in high yields. Furthermore, it should be possible to synthesize a broad range of different functionalized fullerenes. Within the scope of the pilot-project 'Fullerene' our group was successful in acquiring suitable solutions for both problems. Thus it was possible to separate the fullerenes as well as the fullerene adducts in a large scale by fluid chromatography on polystyrene gel. This, and the addition of the orthoxylylenes to fullerene, which was also discovered in our group, enabled the preparation of a multitude of different fullerene-adducts. Some of these adducts showed interesting material properties, e.g. a small band gap, due to intermolecular electronic interactions. Furthermore we were successful in the a: incorporation of fullerenes in polymers, which are still processible, b: characterisation of fullerene-anions and anions of fullerene adducts by EPR/ENDOR- and UV/VIS/NIR-spectroscopy and c: introduction of fullerene into the channels of aluminophosphates. The possibilities for the application of these results are manifold. For example it should be practicable to synthesize new fullerene containing polymers, whereby the properties of these polymers should be tunable by variation of the structure. (orig.)SIGLEAvailable from TIB Hannover: F95B2007+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman