Pillar[5]arene-based supramolecular assemblies application in artificial light-harvesting systems.

Due to the global energy crisis, many scientists have tried to solve this problem by constructing artificial light-harvesting systems (ALHSs) to mimic photosynthesis. However, achieving efficient energy transfer remains a challenge as excitons need to travel longer diffusion lengths within the donor matrix to reach the acceptor. Supramolecular assemblies based on non-covalent interactions provide diverse approaches for the preparation of ALHSs with high energy-transfer efficiency and more flexible options. Many efficient pillar[5]arene-based supramolecular ALHSs with extremely high energy transfer efficiency and the antenna effect have been successfully constructed by non covalent interactions. These ALHSs have expanded various properties on photoluminescence and photocatalysis, enabling promising applications on cell imaging, supramolecular catalysis and so on. In this review, we highlight the recent developments in pillar[5]arene-based supramolecular assemblies application in light-harvesting systems. We also provide the construction, modulation, and applications of supramolecular ALHSs, and provide a brief discussion of their research prospects, challenges, and future opportunities.