<br/>In the past decade, covalent organic frameworks (COFs) have emerged as a new class of highly ordered crystalline organic porous polymers and have attracted tremendous research interests due to their unique structures and various potential applications in gas storage and separation, heterogeneous catalysis, and optoelectronic materials, et al. COFs are constructed through “reticular synthesis” involving dynamic covalent reactions. Such approach provides precise periodicity control in skeleton, customizable pore surface, structural diversity, as well as high physiochemical stability. A large number of COFs have been synthesized and characterized within the past decade. However, they are mainly limited to uniform pore structures with homogeneous pore environments. Introduction of pore heterogeneity within ordered COFs is desirable to tailor materials characteristics, such as electronic, magnetic, mechanical, and sorption properties. Complex COFs with intentionally created heterogeneities are rare. Herein we describe a facile and conceptual approach which can produce COFs with predesigned periodic “defects” in the ordered framework through the desymmetrized vertex design strategy.

Desymmetrized vertex design for the synthesis of covalent organic frameworks (COFs) with heterogeneous pore structure

251st National Meeting (2016)

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