Photointroduced electron transfer in a rigid first generation triphenylamine core dendrimer substituted with a peryleneimide acceptor

The electron-transfer process of a first generation dendrimer with a triphenylamine core substituted with one peryleneimide chromophore at the rim (N1P1) was investigated by steady-state and time-resolved spectroscopic techniques in two different solvents of medium and low polarity. Single photon counting experiments showed a fast charge separation and thermally activated back reaction, which is uncommon for polyaryl bridge or long distance through-space electron transfer.