Topic: Organic Porous Framework Materials: Functional Molecular Design and Applications

Organic porous framework materials, including metal-organic frameworks (MOFs), covalent organic frameworks (COFs), hydrogen-bonded organic frameworks (HOFs), and crystalline porous organic salts (CPOSs), have emerged as a highly versatile class of functional materials. Their structural diversity and tunability stem from precise molecular design and controllable topology, enabling applications across a broad range of chemical and physical domains. This versatility is further driven by the programmability of their molecular architectures, which facilitates the rational integration of diverse functional building blocks and the construction of complex, well-defined frameworks with virtually unlimited structural possibilities. As a result, organic porous frameworks have been widely explored in established areas such as adsorption, separation, and catalysis, while increasingly demonstrating potential in emerging fields, including sensing, spin filtering, and quantum information processing.

This Special Issue highlights the role of organic porous framework materials as a bridge between molecular-level synthesis and advanced functionality. It emphasizes how innovative synthetic strategies and structural design can give rise to emergent properties beyond those of individual components. By bringing together contributions spanning diverse applications, this collection aims to provide a comprehensive overview of recent advances in the field, illustrating how functionality can be intrinsically encoded through molecular design and realized across multiple length scales.

Organic porous frameworks, Metal-organic frameworks, Covalent organic frameworks, Hydrogen-bonded organic frameworks, Crystalline porous organic salts, Molecular design, Structural topology, Emergent functionality, Structure-property relationships, Functional materials, Application diversity