Transporting and Shielding Photosensitisers by Using Water‐Soluble Organometallic Cages: A New Strategy in Drug Delivery and Photodynamic Therapy

Abstract Skin photosensitivity remains one of the main limitations in photodynamic therapy. In this Concept article a strategy to overcome this limitation is described, in which the photosensitizer is hidden inside the hydrophobic cavity of a water‐soluble organometallic cage. The metallacage not only protects the photosensitizer from light, it also facilitates its delivery to cancer cells.