Toward high-temperature superconductivity in organic systems

Achieving high-temperature superconductivity has long been a formidable challenge. Organic materials, characterized by their flexible intermolecular interactions (including the flexibility of polymer chains) and hydrogen-rich composition, offer significant potential for realizing high-temperature superconductivity under relatively mild conditions. This review comprehensively summarizes the research progress in organic superconducting materials, including organic charge-transfer salts, carbon-based materials, aromatic compounds, and polymers. We elaborate on the structures and superconducting properties of these organic superconductors. Importantly, based on these advances in organic superconductor and ordered conjugated polymers, we propose the implementation of new material platforms and experimental methods to facilitate the discovery of new organic superconducting materials and explore high-temperature superconductivity. This includes constructing or searching for new materials, doping carriers, applying high pressure, and forming heterojunctions.