Health & Environmental Research Online (HERO)


Print Feedback Export to File
8391998 
Journal Article 
EPR-active intermediates during photochemical reactions of fullerenes with anthracenes 
Klemt, R; Roduner, E; Fischer, H 
1996 
Yes 
Acta Chemica Scandinavica
ISSN: 0904-213X
EISSN: 1902-3103 
Blackwell Munksgaard 
50 
11 
1050-1059 
English 
During the photochemical reaction of C60 and C70 with anthracenes (A) two types of transient EPR-active product are observed. The first is found in non-polar and in polar solvents and probably represents biradicals (Ċ60C-A-A-Ċ60) or monoradicals C60-A-R with unknown residue R and resulting from a photochemical reaction of preformed 2+4 Diels-Alder adducts of the anthracenes to C60. The second appears only in polar solvents and are tentatively assigned as anions of these Diels-Alder adducts. All species are preferentially formed from anthracenes with small substituents in the 9- and 10-positions. For C70 several adducts of each type are found, which is ascribed to the non-equivalence of the C70 addition sites. To support the assignments various alkyl radical adducts to C60 have also been studied. © Acta Chemica Scandinavica 1996.