2D to 3D Reconstruction of Boron-Linked Covalent–Organic Frameworks
Citations Over TimeTop 10% of 2024 papers
Abstract
The transformation of two-dimensional (2D) covalent-organic frameworks (COFs) into three-dimensions (3D) is synthetically challenging, and it is typically addressed through interlayer cross-linking of alkene or alkyne bonds. Here, we report the first example of the chemical reconstruction of a 2D COF to a 3D COF with a complete lattice rearrangement facilitated by base-triggered boron hybridization. This chemical reconstruction involves the conversion of trigonal boronate ester linkages to tetrahedral anionic spiroborate linkages. This transformation reticulates the coplanar, closely stacked square cobalt(II) phthalocyanine (PcCo) units into a 3D perpendicular arrangement. As a result, the pore size of COFs expands from 2.45 nm for the initial 2D square lattice (sql) to 3.02 nm in the 3D noninterpenetrated network (nbo). Mechanistic studies reveal a base-catalyzed boronate ester protodeboronation pathway for the formation of the spiroborate structure.
Related Papers
- → Synthesis and characterization of boron-substituted carbons(2000)231 cited
- → Determination of Phase Stability of Elemental Boron(2015)42 cited
- → Structures, stability, mechanical and electronic properties of α-boron andα*-boron(2013)25 cited
- → Determination of Phase Stability of Elemental Boron(2015)19 cited
- Study on boron forms and their relationship in rape cultivars with different boron efficiency(2002)