Synthetic Two-dimensional Organic Structures

Synthetic two-dimensional (2D) polymers have totally different topology structures compared with traditional linear or branched polymers. The peculiar 2D structures bring superior properties. Although, from linear to 2D polymers, the study of these new materials is still in its infancy, they already show potential applications especially in optoelectronics, membranes, energy storage and catalysis, etc. In this review, we summarize the recent progress of the 2D materials from three respects: (1) Chemistry—different types of polymerization reactions or supramolecular assembly to construct the 2D networks were described; (2) Preparation methods—surface science, crystal engineering approaches and solution synthesis were introduced; (3) Functionalization and some early applications.