fig1

Figure 1. (A) The formation process of the HMFs with a regular structure, including self-assembly of TOCs with block copolymer, and the high-resolution structure model of the ordered HMFs; (B) molecular model of HMFs; (C) molecular model of TOC building units; (D) chemical structure of the PS-b-PAA copolymer; and (E) the ethylene glycol ligand used to form hydrogen bond in TOCs. The red dashed line represents hydrogen bonding. Adapted from Ref.^[11] with permission, copyright 2024 American Chemical Society. HMFs: Hydrogen-bonded mesoporous frameworks; TOCs: titanium-oxo clusters; PS-b-PAA: poly(styrene-block-acrylic acid).