The Emerging of 2D Layer‐Blocked Frameworks

Abstract Blocked copolymers are a versatile and powerful class of materials, and their properties can be modified by carefully designing the molecular architecture. Their ability to self‐assemble into nanoscale structures and their multifunctionality make them invaluable in advanced materials science, nanotechnology, and biomedical engineering. Compared to traditional blocked copolymer morphologies such as linear, cyclic, and branched, 2D layer‐blocked frameworks provide materials with clear structure, permanent porosity, favorable chemical and thermal stability, larger surface area, ultra‐high carrier mobility, efficient charge separation and migration, and excellent photoexcitation response. In this concept article, we summarized the design concepts and state‐of‐the‐art strategies for the construction of 2D layer‐blocked frameworks and reviewed the development of some 2D‐like blocked frameworks and their applications in semiconductor, catalysis, energy storage, and so forth. Finally, we also outlook for the challenges of these materials in preparation and applications across different research fields.