Light‐Induced Charge Separation in Covalently Linked BODIPY‐Quinone‐Alkyne Dyads

Abstract

AbstractVisible light‐induced charge separation and directional charge transfer are cornerstones for artificial photosynthesis and the generation of solar fuels. Here, we report synthetic access to a series of noble metal‐free donor‐acceptor dyads based on bodipy light‐absorbers and redox‐active quinone/anthraquinone charge storage sites. Peripheral functionalization of the quinone/anthraquinone units with alkynes primes the dyads for integration into a range of light‐harvesting systems, e. g., by Cu‐catalyzed cycloadditions (CLICK chemistry) or Pd‐catalyzed C−C cross‐coupling reactions. Initial photophysical, electrochemical and theoretical analyses reveal the principal processes during the light‐induced charge separation in the reported dyads.