Charge transport and device fabrication of 2D coordination polymeric materials

Two-dimensional coordination polymers (2D CPs), featuring unique structural architectures and outstanding electrical properties, are being explored for the fabrication of active electronic devices such as Schottky barrier diodes (SBDs), solar cells, light-emitting diodes (LEDs), field-effect transistors (FETs), and electronic sensors. Highly conjugated and redox-active ligands are among the most preferred candidates for constructing conductive 2D CPs because of their ability to facilitate efficient charge transport. Additionally, structural simplicity and long-term crystallinity are critical factors that contribute to the performance and stability of these materials in electronic applications. In this Frontier article, we review the rationality of structure-property relationships that underpin the enhanced electrical conductivity and practical applicability of 2D CPs in electronic devices. The semiconducting properties of these CPs are strongly modulated by secondary interactions, such as π⋯π stacking, layer-to-layer hydrogen and halogen bonding interactions and van der Waals forces. Therefore, this article aims to make significant contributions to the researchers working in the area of 2D materials with electronic interfaces and technological advancements. Additionally, this approach holds significant promise for addressing environmental challenges and the energy crisis aspects that are highlighted in this article.