Ligand-elaboration as a strategy for engendering structural diversity in porous metal–organic framework compounds

Abstract

A series of 4,4'-ethynylenedibenzoic acids were synthesized and used in the construction of Zn-based, mixed-ligand metal-organic frameworks; through variation of functionality in the 3- and 3'-positions of these linkers, a collection of MOFs with differing connectivities and varying levels of interpenetration was obtained.

Excimer Formation in a Confined Space: Photophysics of Ladderphanes with Tetraarylethylene Linkers

“…Diarylethyne 3 [23] was prepared by Sonogashira reaction of methyl 4-bromobenzoate and methyl 4-ethynylbenzoate. With an excess of bromide ions, trans bromination of 3 took place to afford tetrasubstituted alkene 4 (Scheme 1), [24] the singlecrystal X-ray structure of which was determined to confirm the stereochemistry ( Figure S1 in the Supporting Information).…”

Recent advances on simulation and theory of hydrogen storage in metal–organic frameworks and covalent organic frameworks

“…114 Kesanli et al 132 experimentally showed a high H 2 adsorption amount (1.12 wt% at 48 bar) at room temperature with interpenetrated MOFs, Sun et al 133 synthesized interwoven MOFs showing a high H 2 uptake of 1.90 wt% at 77 K and 1 bar, and Rowsell and Yaghi 134 measured H 2 storage capacities of various MOFs and then found that catenated MOFs show the highest H 2 uptake at low pressure below 1 bar. After the results, some experimental studies [135][136][137][138] on H 2 uptake in catenated MOFs were reported.…”

Synthesis, characterization and crystal structure of one Co(II) complex with 4,4′-bisimidazolylbiphenyl and m-phthalic acid

“…Even more remarkably, these applications can be combined and integrated into individual frameworks to form multifunctional MOFs [5][6][7][8][9][10]. Despite impressive progress in the area of MOFs has been made, it remains a significant challenge to build novel molecular architectures, because the geometries of the organic ligands have a great effect on the structural frameworks; thus, much effort has been devoted to modifying the building blocks and controlling the assembled motifs for required products via selecting different organic ligands [11][12][13].…”