Aqueous Light‐Harvesting Systems Constructed from Pillar[n]Arene‐Based Supra‐Amphiphiles

Abstract Efficient light energy utilization is important for a wide range of technological applications, including photoelectric conversion, photocatalysis, sensing, and bioimaging. In recent years, supramolecular light‐harvesting systems (LHSs) have attracted significant attention due to their potential applications in solar energy conversion and photochemical processes. Pillar[n]arene‐based supra‐amphiphiles, with their unique structural properties and versatile macrocyclic host–guest chemistry, offer promising platforms for constructing efficient aqueous LHSs. This Concept highlights the design, self‐assembly, and photophysical behaviour of pillar[n]arene‐based supra‐amphiphiles, focusing on their role in enhancing light absorption and energy transfer. Key strategies for improving the stability and efficiency of these systems are discussed, such as molecular tuning and environmental adaptability. The Concept also explores the challenges and future directions in optimizing these supramolecular systems for real‐world applications.