Covalent organic frameworks (COFs), a class of crystalline porous polymers that allow the atomic precise integration of organic building blocks into periodicities, have emerged as a novel media for designing and synthesizing advanced organic materials.1-5 Because of their high surface area, excellent thermal stability, and low densities, COFs have emerged as a new media for gas adsorption. We have synthesized various COFs with p electronic building blocks and developed light-emitting, semiconducting, photoconducting, and charge separating properties.1,4COFs can be constructed by the reticular design of their components, which, upon undergoing condensation reactions, form a porous skeleton with a precise pore size and specific pore geometry. Various COFs that possess tetragonal or hexagonal pores in the micro or meso range have been developed by this approach. Despite the availability of a variety of skeletons for COFs, control of the pore surface remains a significant challenge because of difficulties in the development of a strategy that allows systematic engineering of the COF pore walls. Engineering of the pore surface would endow COFs with a tailor-made interface to meet specific application requirements. Figure1  . Schematic representations an imine-linked COF with free carboxylic acid groups on channel walls (sky blue: C, blue: N, red: O).

Developing 2D covalent organic frameworks for carbon dioxide adsorption

248th National Meeting (2014)

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