Themed collection Fundamentals and Applications of Functional Framework Materials

Artur Ciesielski, Christopher H. Hendon and Katherine A. Mirica introduce the Journal of Materials Chemistry C themed issue on fundamentals and applications of functional framework materials.

Metal–organic frameworks (MOFs) have demonstrated a wide range of applications because of their versatile functionalities. Surface-grafted MOF particles with polymers possess merits of both components. The synergetic combination holds great potentials as emerging materials.

We provide a detailed review of 2D-ITQ-MOFs, novel 2D hybrid materials, which is focused on their synthesis, specific catalytic applications and photophysical properties of composites with different luminescent dyes.

Here, we report an air-free approach to infiltrate isostructural metal–organic frameworks (MOFs), M-MOF-74 (M = Cu, Mn, Zn, Mg), with conjugated acceptor 7,7,8,8-tetracyanoquinodimethane (TCNQ).

A p-type semi-conducting and 2D coordination polymer, made of 1D copper(I)–sulfur inorganic networks, exhibits very high Seebeck coefficient for thermoelectricity.

A disordered zirconium-oligosilyl coordination polymer exhibits coordination-dependent charge transfer.

A new 2-D 8-connected rare earth (RE) MOF based on a hexanuclear (RE³⁺)₆ SBU, the increase of the dimensionality through SCSC linker installation reactions and the turn-on of the temperature sensing capability upon these reactions are reported.

We applied Fe(II)-based MOFs with different spin-states to investigate the impact of Fe(II) spin-state on the bulk modulus. The results emphasize the complex parameter space that determines the mechanical properties of MOFs.

Multi-technique operando investigation reveals the detailed evolution of UiO-67 MOF with embedded Pd nanoparticles under CO₂ hydrogenation reaction conditions at elevated pressures and temperatures.

Several MOFs are evaluated as adsorbents of anthropogenic N₂O emissions, the third most abundant greenhouse gas, through complimentary experimental and DFT analysis. N₂O activation in M₂(dobdc) MOFs is also studied.

Secondary linkers with different length are installed in a stepwise fashion inside rare-earth MOFs consisting of less connected RE₆ clusters.

MOFs formed from 8-connecting nodes and 4-connecting linkers can have the flu, scu and csq topologies. Here we show design criteria for making the rare sqc topology and how topology can be used to generate distinct post-synthetic metalation sites.

We revealed the relationship between the inorganic (–M–S–)_n network and photoconductivity by systematically synthesizing semiconductive Pb(II) coordination polymers with methoxybenzenethiol.

Energy transfer efficiency between Ce³⁺ and Eu³⁺ and photoluminescence of Ce/Eu@Gd-MOFs are enhanced in D₂O compared with those in H₂O.

Two Hofmann-type multifunctional materials are reported, displaying a tuning of the luminescence properties by the spin-crossover, and have exfoliated by in nanometric flakes by the Scotch-tape method.

This work examines a family of UiO-based MOFs built from terephthalic acid and a methyl red linker. The orange-red MOFs show a colourimetric response, changing to dark red with acid vapour, and yellow with base (ammonia) vapour.

Mechano-elastic properties of polymeric frameworks depend on discrete changes between hexanediamine conformers. Their transformations induced by external stimuli include an unusual linear compression, ferroelastic transitions or amorphization.

Experimental and theoretical validation of a triazine-based covalent organic framework as a semiconductor with the band gap in the range of 3.2–3.4 eV.

By controlling the ratio of end groups in a series of porous organic polymers, we maximized their cobalt adsorption capacity.

A stacked 2D Cu(I) coordination polymer displays electrical conductivity with DFT calculations revealing a band structure comprised of donor TCNQ^II− and acceptor 2,5-dimethylpyrazine p-orbitals.

Hierarchically porous Z-scheme CsPbBr₃@HZIF-8 heterojunctions are prepared for efficient photodegradation of tetracycline hydrochloride in high-salinity water.

We demonstrate the facile vapor-phase synthesis of a novel, porous zero-valent metal–organic framework from the reaction between volatile M(CO)₆ (M = Mo, W) and 4,4'-bipyridine precursors.

UiO-66 small tetrahedral pores host the preferential water adsorption sites. Hydrophilic functional groups boost the affinity of the octahedral pores for water, explaining the higher water uptake of functionalized UiO-66 at low relative humidity.

A trimetallic rare-earth cluster-based metal–organic framework is synthesized that emits red, green and blue emission simultaneously.