Enhancing conductivity in polymers: The role of metal ions in conducting polymer systems

As metal ion inclusion has a substantial effect on conducting polymer's mechanical, optical, and electrical properties, it has attracted a lot of attention. This article delves into the complex role of metal ions in conducting polymers, explaining how they affect functionality, structural stability, and conductivity enhancement. The review starts with a synopsis of conducting polymers and doping processes before diving into the particular ways that metal ions interact with polymer matrices to alter their electronic structure and charge transport characteristics. The importance of characterization techniques in comprehending the structure–property correlations is highlighted in the discussion of metal‐ion doped conducting polymer studies. In addition, the paper looks at the uses of conducting polymers doped with metal ions in numerous sectors, including energy storage, electronics, and sensors. The difficulties in attaining accurate control over doping concentrations and guaranteeing stability over an extended period are discussed, as well as potential avenues for future development in this area. This review offers important insights into the development and optimization of functional materials for a variety of applications by thoroughly investigating the function of metal ions in conducting polymers.