Design Strategies: Supermolecular Building Layer (SBL) Approach

Categories: Current Research

Details

Our group has recently introduced a novel building approach, the supermolecular building layer (SBL) approach, where readily targeted 2D MOF layers (SBLs) based on edge transitive nets [e.g., sql, hxl, hcb, kgm, kgd] and judiciously selected pillars (i.e., organic ligands)} are utilized to construct targeted, functional 3D porous MOFs. A myriad of MOFs having specific underlying network topology can be designed and synthesized utilizing the pre-targeted SBLs, where the overall framework remains constant while expansion of the confined space (e.g., porosity) is simple and functionalities can readily be introduced to target specific desirable applications.

SBL_1

The supermolecular building layer (SBL) approach was employed to deliberately synthesize two MOF platforms, eea-MOF and rtl-MOF, based on pillaring of kgm-a or sql-a layers with heterofunctional 3-connected organic building blocks.

SBL_2

(a) Layer segment of a kgm-MOF. (b) Left: 5-(isonicotinamido) isophthalic acid (H2L1) and right: 5-(nicotinamido)isophthalic acid (H2L2). (c) Hourglass-shaped channels with two primary types of cavities. C ¼ gray, O ¼ red, N ¼ blue, Cu ¼ plum; H atoms are omitted for clarity.

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