ESR spectroscopy of the C-60 cation produced by photoinduced electron transfer

Citation
L. Dunsch et al., ESR spectroscopy of the C-60 cation produced by photoinduced electron transfer, CHEM-EUR J, 6(19), 2000, pp. 3547-3550
Citations number
28
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY-A EUROPEAN JOURNAL
ISSN journal
09476539 → ACNP
Volume
6
Issue
19
Year of publication
2000
Pages
3547 - 3550
Database
ISI
SICI code
0947-6539(20001002)6:19<3547:ESOTCC>2.0.ZU;2-L
Abstract
In this study the existence of the C-60 cation produced by photochemically induced electron transfer in the presence of different sensitising molecule s is proved for the first time by using ESR spectroscopy. It is demonstrate d for triphenylpyryliumtetrafluoroborate (TPP) by this spectroscopic method that the electron transfer from C-60 to TPP occurs without, an application of a cosensitiser. Furthermore it is shown that the addition of alcohols c auses a new radical in the system C-60/TPP. The stationary concentration of the C-60 cation diminishes even in the presence of a cosensitiser to such a low concentration that it is not detectable by ESR spectrosopy. The spect roscopic study of the sensitiser/C-60 system is also extended to the reacti on products.