D

Fig. 4.6.9. Electron transfer in DNA hairpins capped with a stilbene diether derivative as the charge donor D.

Fig. 4.6.10. Py-dU and Py-dC as nucleoside models for ET in DNA. When Py-dX (X = U or C) is excited at 340 nm intramolecular ET occurs. Subsequently, protonation can occur, yielding the biradical Py.+-dX(H)\

Excitation

Electron transfer

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