Conjugated microporous polymers (CMPs) offer a promising solution for the capture and conversion of carbon dioxide (CO₂). They are cost-effective, chemically and thermally stable, and have large surface areas, tunable porous frameworks, and chemical structures that make them highly efficient for CO₂ capture. CMPs can also facilitate the dual pathway of converting captured CO₂ into industrially valuable products through chemical or electrochemical methods. Recent studies show that metal-free CMPs can achieve these properties, making them a truly green option for CO₂ capture and utilization. CO₂ levels have risen significantly, with NOAA measuring an average concentration of 419 ppm in October 2023, far exceeding pre-industrial levels. The Intergovernmental Panel on Climate Change (IPCC) attributes this increase to human activities, particularly fossil fuel combustion, leading to severe climate changes. By 2100, CO₂ levels are projected to reach approximately 953 ppm, resulting in temperature increases of 2.6 to 4.8°C above pre-industrial levels. Despite the environmental and health impacts of fossil fuel use, the slow growth of renewable energy technologies has led to continued reliance on fossil fuels. CMPs are versatile materials with tunable properties and expanded π-conjugation, making them suitable for various applications, including adsorbents, heterogeneous catalysts, energy storage, luminescent materials, and light harvesting. Compared to other porous materials like zeolites, covalent organic frameworks (COFs), metal-organic frameworks (MOFs), and activated carbons, CMPs offer advantages such as versatile synthesis methods, scalability, and chemical stability. Their amorphous nature allows for greater design flexibility, enabling the creation of multi-component catalysts through multi-step reactions. In chemical conversion, CMPs can facilitate the cycloaddition of CO₂ with epoxides to produce cyclic carbonates, which are valuable in pharmaceuticals, batteries, and plastics. The reaction involves four stages, with the ring-opening step being the rate-determining factor. CMPs can be designed to incorporate nucleophilic or electrophilic groups to activate both CO₂ and epoxides, enhancing catalytic efficiency. Metal-based CMPs, such as Cr-CMP and Co-CMP, have shown high catalytic activity and reusability. Metal-free CMPs, like IPF-CSU-1 and PCP-Cl, also demonstrate excellent performance under mild conditions. In addition to cycloaddition, CMPs can be used for other CO₂ conversion routes, including carboxylation, methylation, and hydrosilylation. These reactions produce a variety of products, such as carboxylic acids, which are essential building blocks in various industries. CMPs have been shown to catalyze the synthesis of carboxylic acids from CO₂, with high yields and recyclability. The development ofConjugated microporous polymers (CMPs) offer a promising solution for the capture and conversion of carbon dioxide (CO₂). They are cost-effective, chemically and thermally stable, and have large surface areas, tunable porous frameworks, and chemical structures that make them highly efficient for CO₂ capture. CMPs can also facilitate the dual pathway of converting captured CO₂ into industrially valuable products through chemical or electrochemical methods. Recent studies show that metal-free CMPs can achieve these properties, making them a truly green option for CO₂ capture and utilization. CO₂ levels have risen significantly, with NOAA measuring an average concentration of 419 ppm in October 2023, far exceeding pre-industrial levels. The Intergovernmental Panel on Climate Change (IPCC) attributes this increase to human activities, particularly fossil fuel combustion, leading to severe climate changes. By 2100, CO₂ levels are projected to reach approximately 953 ppm, resulting in temperature increases of 2.6 to 4.8°C above pre-industrial levels. Despite the environmental and health impacts of fossil fuel use, the slow growth of renewable energy technologies has led to continued reliance on fossil fuels. CMPs are versatile materials with tunable properties and expanded π-conjugation, making them suitable for various applications, including adsorbents, heterogeneous catalysts, energy storage, luminescent materials, and light harvesting. Compared to other porous materials like zeolites, covalent organic frameworks (COFs), metal-organic frameworks (MOFs), and activated carbons, CMPs offer advantages such as versatile synthesis methods, scalability, and chemical stability. Their amorphous nature allows for greater design flexibility, enabling the creation of multi-component catalysts through multi-step reactions. In chemical conversion, CMPs can facilitate the cycloaddition of CO₂ with epoxides to produce cyclic carbonates, which are valuable in pharmaceuticals, batteries, and plastics. The reaction involves four stages, with the ring-opening step being the rate-determining factor. CMPs can be designed to incorporate nucleophilic or electrophilic groups to activate both CO₂ and epoxides, enhancing catalytic efficiency. Metal-based CMPs, such as Cr-CMP and Co-CMP, have shown high catalytic activity and reusability. Metal-free CMPs, like IPF-CSU-1 and PCP-Cl, also demonstrate excellent performance under mild conditions. In addition to cycloaddition, CMPs can be used for other CO₂ conversion routes, including carboxylation, methylation, and hydrosilylation. These reactions produce a variety of products, such as carboxylic acids, which are essential building blocks in various industries. CMPs have been shown to catalyze the synthesis of carboxylic acids from CO₂, with high yields and recyclability. The development of