We have investigated novel model systems for photo-induced intramolecular electron-transfer processes. The molecules presented here are of the structure T-5-C-60 or A-T-5-C-60, i. e., fullerene C-60 is used as acceptor, and quinquethiophene (T-5) or anthracene (A) can act as a donor. From theoretical considerations we learn that a charge transfer should occur after excitation of the quinquethiophene or anthracene part, whereby an energy transfer is still not excluded. Optical absorption spectra show the electronic independence of the fullerene from the substituent and hint at isolated molecules in solutions. After laser-flash excitation of frozen solutions of the molecules, we used pulsed electron spin resonance (ESR) to detect the radical signals of the charge-separated state. In both the diad and the triad, we observe at low temperatures a free induction decay (FID) and a broad spin-echo spectrum with the same lifetime of 1-2 mu s. The signals can be assigned to the C60 anion (FID) and the T-5(+) cation (spin echo) by the g factor and the linewidth.