Molecular–Supramolecular Light Harvesting for Photochemical Energy Conversion: Making Every Photon Count

Abstract

Photochemical conversion and storage of solar energy, in which the energy conversion process is initiated by the capture of photons and the subsequent energy delivery, is a sustainable way to partially cover future human energy needs. Diverse artificial light-harvesting techniques have been realized and applied in solar energy conversion as a result of decades of effort. In this Perspective, challenges and developing trends of molecular–supramolecular light-harvesting systems for photochemical solar energy conversion are discussed. Advances and potential strategies for construction of exceptional light-harvesting systems by merging molecular and supramolecular tailoring, singlet fission, and triplet–triplet annihilation are presented.