Fig. 2: Intramolecular photoinduced electron transfer in a molecular triad and a molecular pentad.
From: Photoinduced double charge accumulation in a molecular compound
a,b, Molecular structures highlighting the individual electron donor (D1, D2) and acceptor (A1, A2) units in different colours. c,d, Energy-level diagrams of the key photoproducts and their corresponding energies in the triad (c) and the pentad (d). The final charge-separated state (CSS) in the triad corresponds to the first charge-separated state in the pentad (CSS-1), which spontaneously evolves onwards to CSS-2. The central hypothesis of this study was that a secondary excitation event then leads to CSS-3 in the pentad. The two ϕ values indicate quantum yields. The quantum yields and their determination via relative actinometry are discussed in the main text. PS, photosensitizer.
