Effect of the Donor/Acceptor Size on the Rate of Photo-Induced Electron Transfer

The photo-induced electron transfer has been under intensive investigation for a few decades already, and good understanding of the reaction was developed based on thorough study molecular donor–acceptor (DA) system. recent shift to hybrid DA systems opens question transferring knowledge analyze design these new materials. One apparent differences is size increase donor or acceptor entities. electronic wave functions larger entities occupy volume, but since are still one-electron functions, their amplitudes lower. A simple analysis proposed here demonstrates that this leads roughly inverse third power dependence rate constant size, kET?R?3. This can be observed upon switching from quantum dot in with fullerene acceptor.