The book "Covalent Organic Frameworks" edited by Yanan Gao and Fei Lu provides a comprehensive overview of the design, synthesis, and applications of covalent organic frameworks (COFs). COFs are crystalline porous materials constructed through dynamic covalent bonds, offering unique properties such as well-defined pore structures and high porosity. The book covers recent advancements in the synthesis of 2D COF thin films via various interfacial methods, including gas/solid, liquid/liquid, liquid/solid, and gas/liquid interfaces. These methods allow for better orientation and fewer defects in the films, enhancing their potential for applications in separation, energy conversion, and electronic fields. The book also discusses the use of COFs in photocatalysis for water splitting, CO₂ reduction, and environmental pollutant degradation. It highlights the latest achievements of COFs as solid ion conductors in energy devices, particularly in lithium-ion batteries and fuel cells. The well-defined nanochannels and controlled pore properties of COFs provide ideal pathways for long-term ion conduction, making them promising candidates for solid-state electrolytes. Additionally, the book explores the potential of COFs in cancer therapy, including chemotherapy, photodynamic therapy, photothermal therapy, and immunotherapy. It reviews the design criteria and practical methodologies for COFs in various application fields, providing a broad overview for researchers and practitioners in the field. The editors, Yanan Gao and Fei Lu, are experts in the field, with Gao focusing on the design, synthesis, and application of COFs, and Lu on porous materials for energy storage. The book is a valuable resource for those interested in the latest developments and applications of COFs.The book "Covalent Organic Frameworks" edited by Yanan Gao and Fei Lu provides a comprehensive overview of the design, synthesis, and applications of covalent organic frameworks (COFs). COFs are crystalline porous materials constructed through dynamic covalent bonds, offering unique properties such as well-defined pore structures and high porosity. The book covers recent advancements in the synthesis of 2D COF thin films via various interfacial methods, including gas/solid, liquid/liquid, liquid/solid, and gas/liquid interfaces. These methods allow for better orientation and fewer defects in the films, enhancing their potential for applications in separation, energy conversion, and electronic fields. The book also discusses the use of COFs in photocatalysis for water splitting, CO₂ reduction, and environmental pollutant degradation. It highlights the latest achievements of COFs as solid ion conductors in energy devices, particularly in lithium-ion batteries and fuel cells. The well-defined nanochannels and controlled pore properties of COFs provide ideal pathways for long-term ion conduction, making them promising candidates for solid-state electrolytes. Additionally, the book explores the potential of COFs in cancer therapy, including chemotherapy, photodynamic therapy, photothermal therapy, and immunotherapy. It reviews the design criteria and practical methodologies for COFs in various application fields, providing a broad overview for researchers and practitioners in the field. The editors, Yanan Gao and Fei Lu, are experts in the field, with Gao focusing on the design, synthesis, and application of COFs, and Lu on porous materials for energy storage. The book is a valuable resource for those interested in the latest developments and applications of COFs.