Chapter 8. Porphyrin and Phthalocyanine Covalent Organic Frameworks: Pre-designable Structures and Tailor-made Materials

Porphyrins, phthalocyanines, and their metallo-compounds are representative macrocycles with 18-π structures and a diversity of properties. Construction of well-defined architectures of porphyrins, phthalocyanines, and their metallo-compounds is highly desirable and important as they offer functional materials with advanced properties and functions. In this chapter, we summarize the chemistry for the designed synthesis of crystalline covalent organic frameworks (COFs) with long-range orderings of porphyrins, phthalocyanines, and their metallo-compounds, with the aim of showing the capabilities of precise structural design and diversity of structural scope. We analyze various properties of these frameworks by emphasizing their interactions with photons, electrons, holes, ions, and molecules to elucidate their structure–function correlations, and to disclose the way to develop unique properties and functions that are specific to their framework structures. We predict key issues to be addressed and show future directions from the viewpoints of design, synthesis, and properties.