Tetrahedral Aniline Derivative for the Synthesis of 3D Covalent Organic Frameworks (COFs)

Tetrakis(4-aminophenyl)methane (1) is utilized as a building block for the synthesis of 3-dimensional (3D) Covalent Organic Frameworks (COFs). Owing to its tetrahedral center, crystalline porous 3D frameworks with diamond like structures can be prepared using starting material 1 and aldehydes or carboxylic acid anhydrides. Beginning with a report from Yaghi et al., ¹⁾ several groups have synthesized numerous COFs with imino or imide groups which have large specific surface area and high thermal stabilities.^2,3) COFs are anticipated to be applicable for gas storage and separation, and as a catalyst.