Titel
BN‐Doped Metal–Organic Frameworks: Tailoring 2D and 3D Porous Architectures through Molecular Editing of Borazines
Autor*in
Francesco Fasano
School of Chemistry, Cardiff University
... show all
Abstract
Building on the MOF approach to prepare porous materials, herein we report the engineering of porous BN-doped materials using tricarboxylic hexaarylborazine ligands, which are laterally decorated with functional groups at the full-carbon ‘inner shell’. Whilst an open porous 3D entangled structure could be obtained from the double interpenetration of two identical metal frameworks derived from the methyl substituted borazine, the chlorine-functionalised linker undergoes formation of a porous layered 2D honeycomb structure, as shown by single-crystal X-ray diffraction analysis. In this architecture, the borazine cores are rotated by 60° in alternating layers, thus generating large rhombohedral channels running perpendicular to the planes of the networks. An analogous unsubstituted full-carbon metal framework was synthesised for comparison. The resulting MOF revealed a crystalline 3D entangled porous structure, composed by three mutually interpenetrating networks, hence denser than those obtained from the borazine linkers. Their microporosity and CO2 uptake were investigated, with the porous 3D BN-MOF entangled structure exhibiting a large apparent BET specific surface area (1091 m2 g−1) and significant CO2 reversible adsorption (3.31 mmol g−1) at 1 bar and 273 K.
Stichwort
BN-dopingborazinegas adsorptionheteroatom dopingmeta–organic frameworks
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
phaidra.univie.ac.at/o:1218062
Erschienen in
Titel
Chemistry – A European Journal
Band
27
Ausgabe
12
ISSN
0947-6539
Erscheinungsdatum
2021
Seitenanfang
4124
Seitenende
4133
Publication
Wiley
Fördergeber
European Union (all programmes) — 734834
Erscheinungsdatum
2021
Zugänglichkeit
Rechte
Rechteangabe
© 2020 The Authors
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