Covalent organic frameworks (COFs) are a class of crystalline porous polymer networks which attracted great attention over the past decade due to their potential applications. The non-covalent interactions between the 2D layers are greatly dictate the structural organization of 2D-COFs. Here, we report a structure-function relationship of a series of azine-liked 2D-COFs synthesized utilizing two novel non-planar fluorinated monomers in comparison to their non-fluorinated analogue. We observed that the fluorinated precursors could produce 2D-COFs with enhanced materials quality which, displayed BET surface areas over 2000 m2 g-1 compared to the non-fluorinated COF (760 m2 g-1). Also, displayed more well-defined meso-pore channels with significant improvement in crystallinity. These were synthesized under varying reaction times and temperatures to gain a greater insight to the mechanism of formation.

Fluorinated non-planer precursors for enhanced structural arrangement in two-dimensional (2D) azine-linked covalent organic frameworks

254th National Meeting (2017)

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