Steering Photoinduced Multi-Electron Accumulation via High-Concentration Sacrificial Electron Donors

Abstract

Efficient artificial photosynthesis requires rapid, sequential multi-electron transfer and accumulation. This work demonstrates a kinetic strategy for efficient two-electron accumulation, leveraging high-concentration sacrificial electron donors. Transient spectroscopy confirms that pseudo-first-order reduction of perylene diimide radical anion excited state (PDI•−*) outcompetes its intrinsic deactivation, enabling long-lived PDI2− generation.