Themed collection Functional Framework Materials

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Editorial

Introduction to functional framework materials

This themed issue covers functional framework materials and their related applications.

Graphical abstract: Introduction to functional framework materials
From the themed collection: Functional Framework Materials
Review Article

Anisotropy of metal–organic framework and their composites: properties, synthesis, and applications

Metal–organic frameworks (MOFs) are potentially promising materials for a variety of applications in several fields owing to their distinctive structural properties, such as ultrahigh surface area, tailorable porosity and structural diversity.

Graphical abstract: Anisotropy of metal–organic framework and their composites: properties, synthesis, and applications
Review Article

Interfacial chemistry regulation using functional frameworks for stable metal batteries

Recent advances on functional framework materials, including PCFs and IOFs, are summarized to regulate interfacial chemistry in metal batteries, which facilitate cation desolvation and metal nucleation for improved electrochemical performance.

Graphical abstract: Interfacial chemistry regulation using functional frameworks for stable metal batteries
Review Article

Defect-containing metal–organic framework materials for sensor applications

Defective MOFs: unique properties and electrochemical sensor applications. Overview of construction principles, mechanisms, and applications.

Graphical abstract: Defect-containing metal–organic framework materials for sensor applications
Review Article

Expanding the horizons of covalent organic frameworks: sub-stoichiometric synthesis as an emerging toolkit for functional COFs

Type III COFs are constructed using sub-stoichiometric synthesis and result in unconventional topologies and active functional groups with a variety of applications.

Graphical abstract: Expanding the horizons of covalent organic frameworks: sub-stoichiometric synthesis as an emerging toolkit for functional COFs
From the themed collection: Functional Framework Materials
Review Article

Reticular chemistry within three-dimensional covalent organic frameworks for multiple applications

This review summarizes the advances in rational design and synthesis of 3D COFs guided by reticular chemistry and briefly discusses recent progress in gas storage and separation, catalysis, fluorescence, batteries, conductivity, and drug delivery.

Graphical abstract: Reticular chemistry within three-dimensional covalent organic frameworks for multiple applications
From the themed collection: Functional Framework Materials
Open Access Communication

An electrically conducting 3D coronene-based metal–organic framework

A novel electrically conducting cubic mesoporous metal–organic framework (MOF), consisting of hexahydroxy-cata-hexabenzocoronene (c-HBC) and FeIII ions is presented.

Graphical abstract: An electrically conducting 3D coronene-based metal–organic framework
From the themed collection: Functional Framework Materials
Open Access Communication

Adsorptive molecular sieving of aromatic hydrocarbons over cyclic aliphatic hydrocarbons via an intrinsic/extrinsic approach

An efficient adsorptive molecular sieving strategy to separate aromatic and cyclic aliphatic hydrocarbons via an intrinsic/extrinsic approach.

Graphical abstract: Adsorptive molecular sieving of aromatic hydrocarbons over cyclic aliphatic hydrocarbons via an intrinsic/extrinsic approach
From the themed collection: Journal of Materials Chemistry A HOT Papers
Open Access Communication

Tuning the electrochemical performance of covalent organic framework cathodes for Li- and Mg-based batteries: the influence of electrolyte and binder

We present an approach to improve the electrochemical performance of an anthraquinone-based covalent organic framework (COF) cathode material in metal anode (Li, Mg) batteries through proper selection of the electrolyte and binder.

Graphical abstract: Tuning the electrochemical performance of covalent organic framework cathodes for Li- and Mg-based batteries: the influence of electrolyte and binder
From the themed collection: Functional Framework Materials
Open Access Paper

Imine-based covalent organic framework gels for efficient removal of Fe2+ from contaminated water

Aerogels of two imine-based COFs showed fast adsorption uptakes of Fe2+ from contaminated waters. COF-aerogel@Polysulfone composite beads are easily incorporated into water treatment, they are excellent candidates for large-scale preparation.

Graphical abstract: Imine-based covalent organic framework gels for efficient removal of Fe2+ from contaminated water
From the themed collection: Functional Framework Materials
Paper

Coupling doped halogen sites in copper(I)–organic frameworks with cuprous oxide for high selectivity CO2 photoreduction with H2O

Copper(I)–organic frameworks (CuX–bpy) loaded on Cu2O enable efficient CO2 photoreduction to formate, leveraging halogens (X = Cl, Br, I) and rapid electron transfer, achieving 1520 μmol g−1 in 12 hours without sacrificial agents or photosensitizers.

Graphical abstract: Coupling doped halogen sites in copper(i)–organic frameworks with cuprous oxide for high selectivity CO2 photoreduction with H2O
From the themed collection: Functional Framework Materials
Paper

Redox-active covalent organic nanosheets (CONs) as a metal-free electrocatalyst for selective CO2 electro-reduction to the liquid fuel methanol

In essence, the utilization of renewable energy in the carbon dioxide reduction reaction (CO2RR) holds the potential to transform carbon emissions into valuable chemicals, encompassing a range of hydrocarbons and alcohols.

Graphical abstract: Redox-active covalent organic nanosheets (CONs) as a metal-free electrocatalyst for selective CO2 electro-reduction to the liquid fuel methanol
From the themed collection: Functional Framework Materials
Open Access Paper

Tuning the ion conductivity of Zr-based metal–organic framework ionogels by linker functionalization

The conductivity of ionogels, made by embedding an ionic liquid into lithium alkoxide-grafted MOFs from the UiO-66 family, can be improved by 6 orders of magnitude.

Graphical abstract: Tuning the ion conductivity of Zr-based metal–organic framework ionogels by linker functionalization
From the themed collection: Functional Framework Materials
Open Access Paper

Tailoring the efficiency of porphyrin molecular frameworks for the electroactivation of molecular N2

PCN-224 metal–organic framework family is particularly suitable for the electroreduction of molecular nitrogen for the formation of ammonia. The introduction of Ni2+ and fluor sites improves both the activity and stability.

Graphical abstract: Tailoring the efficiency of porphyrin molecular frameworks for the electroactivation of molecular N2
From the themed collection: Functional Framework Materials
Open Access Paper

Impact of Ni(II) coordinatively unsaturated sites and coordinated water molecules on SO2 adsorption by a MOF with octanuclear metal clusters

The influence of Ni(II) coordinatively unsaturated metal sites and coordinated water on the SO2 adsorption performance of NiBDP were investigated.

Graphical abstract: Impact of Ni(ii) coordinatively unsaturated sites and coordinated water molecules on SO2 adsorption by a MOF with octanuclear metal clusters
From the themed collection: Functional Framework Materials
Paper

Pyridinic-N exclusively enriched CNT-encapsulated NiFe interfacial alloy nanoparticles on knitted carbon fiber cloth as bifunctional oxygen catalysts for biaxially flexible zinc–air batteries

A highly reversible bifunctional electrocatalyst for flexible Zn air batteries was fabricated featuring pyridinic-N exclusively enriched CNT encased NiFe interfacial alloy nanoparticles derived from an LDH template on knitted carbon fiber cloth.

Graphical abstract: Pyridinic-N exclusively enriched CNT-encapsulated NiFe interfacial alloy nanoparticles on knitted carbon fiber cloth as bifunctional oxygen catalysts for biaxially flexible zinc–air batteries
From the themed collection: Functional Framework Materials
Open Access Paper

Tuning the electrostatic energy landscape within the pores of covalent organic frameworks: post-synthetic modification reactions and structural imperfections

Polar substituents decorating the pore walls of covalent organic frameworks can be used to control the electrostatic potential within the pores and to tune the alignment of the electronic states in guest molecules and the COF scaffold.

Graphical abstract: Tuning the electrostatic energy landscape within the pores of covalent organic frameworks: post-synthetic modification reactions and structural imperfections
From the themed collection: Functional Framework Materials
Open Access Paper

Stabilization of intermediate Mo oxidation states by Nb doping enhancing methane aromatization on Mo/HZSM-5 catalysts

The dehydroaromatization of methane is a promising process to produce aromatics and ultra-pure hydrogen. Increased yields and stability of Mo/HZSM-5 against irreversible deactivation were achieved via a redox interaction by doping with otherwise inert Nb.

Graphical abstract: Stabilization of intermediate Mo oxidation states by Nb doping enhancing methane aromatization on Mo/HZSM-5 catalysts
From the themed collection: Functional Framework Materials
Open Access Paper

Electrochemical valorization of HCl for the production of chlorine via a proton-filter functional covalent organic framework

An in situ proton filter covalent organic framework (COF) is developed to integrate the chlorine evolution reaction (CER) with the oxygen-depolarized cathode and an excellent CER faradaic efficiency of 92% is achieved.

Graphical abstract: Electrochemical valorization of HCl for the production of chlorine via a proton-filter functional covalent organic framework
From the themed collection: Functional Framework Materials
Paper

Sorption enhanced CO2 hydrogenation to formic acid over CuZn-MOF derived catalysts

A series of Cu–Zn@CNx catalysts incorporated with platinum group metal (PGM) elements, such as Ru, Pd, Pt, and Ir were synthesised via the hard template approach, where a metal–organic framework (MOF) is utilised as a hard template.

Graphical abstract: Sorption enhanced CO2 hydrogenation to formic acid over CuZn-MOF derived catalysts
From the themed collection: Functional Framework Materials
Paper

A monolithic nano-scale sensor architecture with tuneable gas diffusion for molecular fingerprinting

Selective chemoresistive gas sensors using a monolithic membrane-sensing layer architecture.

Graphical abstract: A monolithic nano-scale sensor architecture with tuneable gas diffusion for molecular fingerprinting
From the themed collection: Functional Framework Materials
Paper

Construction of a graphitic carbon nitride-based photocatalyst with a strong built-in electric field via π–π stacking interactions boosting photocatalytic CO2 reduction

A high-efficiency photocatalyst with a strong built-in electric field was fabricated by anchoring π-conjugated molecules on the surface of crystalline nitride carbon via π–π stacking interactions with efficient photocatalytic CO2 reduction into CO and CH4.

Graphical abstract: Construction of a graphitic carbon nitride-based photocatalyst with a strong built-in electric field via π–π stacking interactions boosting photocatalytic CO2 reduction
From the themed collection: Functional Framework Materials
Open Access Paper

A Mo–salicylaldehyde-linker (Mo–Tp) based 2D MOF as a single-atom catalyst for the nitrogen reduction reaction

This work investigates a Mo–Tp 2D MOF screened from a number of different transition-metal-based 2D MOFs. After exfoliation, the Mo–Tp 2D MOF produces ammonia via the distal pathway at a very low limiting potential of −0.38 V.

Graphical abstract: A Mo–salicylaldehyde-linker (Mo–Tp) based 2D MOF as a single-atom catalyst for the nitrogen reduction reaction
From the themed collection: Functional Framework Materials
Paper

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

A new composite with two-dimensional graphene oxide decoration is designed through microwave sintering for efficient microwave attenuation.

Graphical abstract: A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications
From the themed collection: Functional Framework Materials
Open Access Paper

On-surface magnetocaloric effect for a van der Waals Gd(III) 2D MOF grown on Si

[Gd(MeCOO)(PhCOO)2], a 2D MOF is reported and characterized, the material shows a magnetocaloric effect both in bulk and chemisorbed on a Silicon substrate. This opens up the possibilities for on-surface cooling devices.

Graphical abstract: On-surface magnetocaloric effect for a van der Waals Gd(iii) 2D MOF grown on Si
From the themed collection: Functional Framework Materials
Open Access Paper

A synthetic strategy towards single crystals of Zr6 cluster and phosphonate-based metal–organic frameworks

We developed a strategy for synthesizing single-crystal Zr-phosphonate MOFs, retaining parent topology via post-synthesis. SALE and post-synthetic oxidation enable linker modification, enhancing hydrophilicity and Brønsted acidity.

Graphical abstract: A synthetic strategy towards single crystals of Zr6 cluster and phosphonate-based metal–organic frameworks
From the themed collection: Functional Framework Materials
Paper

Analysis of photocatalytic CO2 reduction over MOFs using machine learning

Photocatalytic CO2 reduction over metal organic frameworks is investigated by constructing a database from published articles and analyzed using machine learning tools to predict the total gas product yield and predominant product types under various conditions.

Graphical abstract: Analysis of photocatalytic CO2 reduction over MOFs using machine learning
From the themed collection: Functional Framework Materials
Paper

Single-site cobalt catalyst embedded in a covalent triazine-based framework (CTF) for photocatalytic CO2 reduction

Single-site Co-embedded CTF-TPE exhibits high photocatalytic CO2 conversion to CO with a production rate of 945 μmol g−1 h−1.

Graphical abstract: Single-site cobalt catalyst embedded in a covalent triazine-based framework (CTF) for photocatalytic CO2 reduction
From the themed collection: Functional Framework Materials
Paper

Design, synthesis and characterization of hierarchical porous stacked thin films based on MOFs and ordered mesoporous oxides

Integration of mesoporous thin films and metal–organic frameworks as stacked bilayers, towards hierarchical porous 1D photonic crystals.

Graphical abstract: Design, synthesis and characterization of hierarchical porous stacked thin films based on MOFs and ordered mesoporous oxides
From the themed collection: Functional Framework Materials
Paper

Microscopic mechanism of thermal amorphization of ZIF-4 and melting of ZIF-zni revealed via molecular dynamics and machine learning techniques

The microscopic mechanism of ZIF-4 amorphization and ZIF-zni melting are elucidated via a combination of data science and computer simulation approaches. Gradual density changes and the breaking and formation of Zn–N bonds are key to both processes.

Graphical abstract: Microscopic mechanism of thermal amorphization of ZIF-4 and melting of ZIF-zni revealed via molecular dynamics and machine learning techniques
From the themed collection: Functional Framework Materials
Paper

Structural electrochemistry of poly(3,4-ethylenedioxythiophene) and its applicability as simultaneous sensor of environmental surroundings: self-sensing electrical, thermal, and chemical working conditions

An extensive electrochemical investigation of PEDOT has been carried out with a particular focus on understanding the structural electrochemistry during its faradaic process, a topic that has not been previously explored in such detail.

Graphical abstract: Structural electrochemistry of poly(3,4-ethylenedioxythiophene) and its applicability as simultaneous sensor of environmental surroundings: self-sensing electrical, thermal, and chemical working conditions
From the themed collection: Functional Framework Materials
Paper

Enzyme-mimicking of copper-sites in metal–organic frameworks for oxidative degradation of phenolic compounds

Two of the main factors controlling the activity and selectivity of metal sites within MOF-like copper metalloenzymes are: (i) their coordination environments, and (ii) the number and connectivity of metal ions at the active site (i.e., nuclearity).

Graphical abstract: Enzyme-mimicking of copper-sites in metal–organic frameworks for oxidative degradation of phenolic compounds
From the themed collection: Functional Framework Materials
Paper

A two-dimensional semiconducting Cu(I)-MOF for binder and conductive additive-free supercapattery

A two dimensional CuCN-based semiconducting MOF with nitrogen rich ligand has been synthesized which shows supercapattery behaviour. The energy storage device formed by CuCN-MOF exhibits excellent energy density, power density and cyclic stability.

Graphical abstract: A two-dimensional semiconducting Cu(i)-MOF for binder and conductive additive-free supercapattery
From the themed collection: Functional Framework Materials
Paper

Pendent carboxylic acid-fuelled high-performance uranium extraction in a hydrogen-bonded framework and prolifically improved water oxidation via post-metalation-actuated composite fabrication

Employing a functionality scissoring approach, a hydrogen-bonded MOF shows selective and regenerable uranium extraction alongside exceptionally improved electrochemical oxygen evolution via post-metalation.

Graphical abstract: Pendent carboxylic acid-fuelled high-performance uranium extraction in a hydrogen-bonded framework and prolifically improved water oxidation via post-metalation-actuated composite fabrication
From the themed collection: Functional Framework Materials
Open Access Paper

Alcohol-based adsorption heat pumps using hydrophobic metal–organic frameworks

Alcohol adsorption using hydrophobic MOFs is a promising strategy for heating and cooling applications. Finding optimal conditions for each adsorbent-working fluid pair is key to maximize the performance of the devices.

Graphical abstract: Alcohol-based adsorption heat pumps using hydrophobic metal–organic frameworks
From the themed collection: Functional Framework Materials
Paper

Fe(TCNQ)2 nanorod arrays: an efficient electrocatalyst for electrochemical ammonia synthesis via the nitrate reduction reaction

Nitrate, a water-pollutant, is converted to valuable product ammonia electrochemically using Fe(TCNQ)2/CF nanorod arrays with yield rate 11351.6 μg h–1 cm–2 and faradaic efficiency 85.2% under ambient conditions.

Graphical abstract: Fe(TCNQ)2 nanorod arrays: an efficient electrocatalyst for electrochemical ammonia synthesis via the nitrate reduction reaction
From the themed collection: Functional Framework Materials
Paper

An intrinsically zwitter-ionic COF: a carboxylic acid and pseudo-tetrahedral sp3 nitrogen functionalized covalent organic framework with potential for humidity sensing

A carboxylic acid functionalized sp3 N-rich imine bonded COF shows a humidity-dependent visible color change. This COF is easily exfoliated to nanosheets, which are explored as a potential humidity sensor that detects trace water in organic solvents.

Graphical abstract: An intrinsically zwitter-ionic COF: a carboxylic acid and pseudo-tetrahedral sp3 nitrogen functionalized covalent organic framework with potential for humidity sensing
From the themed collection: Functional Framework Materials
Paper

Mechanism and selectivity of MOF-supported Cu single-atom catalysts for preferential CO oxidation

MOFs can achieve atom-precision in the design of single-atom catalysts (SACs). We elucidated the PROX-reaction mechanism on a well-defined Cu-SAC supported by UiO-66 framework using a multitude of experimental methods and detailed DFT computations.

Graphical abstract: Mechanism and selectivity of MOF-supported Cu single-atom catalysts for preferential CO oxidation
From the themed collection: Functional Framework Materials
Open Access Paper

Ruthenium nanoparticles on covalent triazine frameworks incorporating thiophene for the electrocatalytic hydrogen evolution reaction

In this study, 2 to 4 nm ruthenium nanoparticles were loaded by decomposition of Ru3(CO)12 through microwave heating on thiophene containing CTFs to assess the influence of thiophene on the electrocatalytic properties in the hydrogen evolution reaction.

Graphical abstract: Ruthenium nanoparticles on covalent triazine frameworks incorporating thiophene for the electrocatalytic hydrogen evolution reaction
From the themed collection: Functional Framework Materials
Paper

Constructing Fe–N-doped porous carbon nanofibers for a pH-universal ORR and switchable, superior Zn–air batteries

Efficient pH-universal electrocatalysts composed of highly dispersive tiny Fe nanoparticle units in a carbon nanofiber network is reported. The as-assembled zinc–air batteries in alkaline and neutral electrolytes exhibit excellent overall performance.

Graphical abstract: Constructing Fe–N-doped porous carbon nanofibers for a pH-universal ORR and switchable, superior Zn–air batteries
From the themed collection: Functional Framework Materials
Open Access Paper

Enhancing ionic conductivity and suppressing Li dendrite formation in lithium batteries using a vinylene-linked covalent organic framework solid polymer electrolyte

A novel solid polymer electrolyte based on chemically stable vinylene-linked covalent organic framework was developed, demonstrating enhanced Li+ conductivity and improved battery performance.

Graphical abstract: Enhancing ionic conductivity and suppressing Li dendrite formation in lithium batteries using a vinylene-linked covalent organic framework solid polymer electrolyte
From the themed collection: Functional Framework Materials
Open Access Paper

Zirconium-metal–organic framework@activated carbon composites for prevention of secondary emission of nerve agents

We have studied the formation of core–shell hybrid metal–organic framework@activated carbon sphere (MOF@AC) adsorbents, by means of a layer-by-layer (LBL) growth method of MOFs on shaped AC materials.

Graphical abstract: Zirconium-metal–organic framework@activated carbon composites for prevention of secondary emission of nerve agents
From the themed collection: Functional Framework Materials
Paper

A covalent organic framework based on BOPHY/TiO2 hybrid photocatalysts for solar driven hydrogen production

Here we show the improvement in solar driven H2 production due to the synergy between a novel BOPHY based COF and TiO2.

Graphical abstract: A covalent organic framework based on BOPHY/TiO2 hybrid photocatalysts for solar driven hydrogen production
From the themed collection: Functional Framework Materials
Paper

Correlating the structural transformation and properties of ZIF-67 during pyrolysis, towards electrocatalytic oxygen evolution

The pyrolysis of ZIF-67 is followed in situ, and the conditions are correlated with the structural evolution and electrocatalytic performance.

Graphical abstract: Correlating the structural transformation and properties of ZIF-67 during pyrolysis, towards electrocatalytic oxygen evolution
From the themed collection: Functional Framework Materials
Paper

The role of protein folding in prenucleation clusters on the activity of enzyme@metal–organic frameworks

Two steps must be satisfied to achieve high activity enzyme@MOFs: proper enzyme folding and low MOF crystallinity.

Graphical abstract: The role of protein folding in prenucleation clusters on the activity of enzyme@metal–organic frameworks
From the themed collection: Functional Framework Materials
Paper

Moisture-triggered proton conductivity switching in metal–organic frameworks: role of coordinating solvents

This study reports moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs, [Zn53-OH)2(FDC)4(solvent)2] (FDC = 9H-fluorene-2,7-dicarboxylate), induced by the presence and absence of coordinating solvents.

Graphical abstract: Moisture-triggered proton conductivity switching in metal–organic frameworks: role of coordinating solvents
From the themed collection: Functional Framework Materials
Paper

Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers

Through regulated and less toxic MIL-101(Cr) synthesis and superabsorbent polymeric binders, this work reports MIL-101(Cr)-coated heat exchangers with twice the water uptake of the silica gel-coated control towards energy-efficient cooling.

Graphical abstract: Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers
From the themed collection: Functional Framework Materials
Open Access Paper

ADOR zeolite with 12 × 8 × 8-ring pores derived from IWR germanosilicate

Addressing the synthesis–property relations in the Assembly step of ADOR enabled to design previously unknown IPC-17 zeolite by optimization of the chemical composition and crystallite dimensions in the parent IWR germanosilicate.

Graphical abstract: ADOR zeolite with 12 × 8 × 8-ring pores derived from IWR germanosilicate
From the themed collection: Functional Framework Materials
Paper

On the validity of rapid optical sensing of dioxygen by means of sensitivity, stability, and reversibility for archetype MOFs post-synthetically modified with Eu3+

Comparison of seven archetype MOFs post-synthetically modified with and possessing Eu3+ as connectivity centers illuminates pros and cons of reversible, optical sensing of O2 based on photoluminescence emission quenching.

Graphical abstract: On the validity of rapid optical sensing of dioxygen by means of sensitivity, stability, and reversibility for archetype MOFs post-synthetically modified with Eu3+
From the themed collection: Functional Framework Materials
Paper

Inducing local charge polarization by constructing isomeric covalent organic frameworks with different orientations of imine bonds for enhancing photocatalytic hydrogen evolution

The N-atom orientation of imine bonds towards the acceptor in COFs may induce local charge polarization and delocalization, which could fundamentally improve the exciton dissociation and charge separation, thus achieving the promoted photocatalytic H2 evolution.

Graphical abstract: Inducing local charge polarization by constructing isomeric covalent organic frameworks with different orientations of imine bonds for enhancing photocatalytic hydrogen evolution
From the themed collection: Functional Framework Materials
Paper

Carbon within carbon: growth of excitation-independent CDs within functional mesoporous carbon towards detection and adsorption of a specific nitrofuran class of antibiotics

This work discloses a new functionalized material comprising a mesoporous matrix and a luminescent tag, both composed of carbon for the detection and removal of specific antibiotics from aqueous solutions with superior performances.

Graphical abstract: Carbon within carbon: growth of excitation-independent CDs within functional mesoporous carbon towards detection and adsorption of a specific nitrofuran class of antibiotics
From the themed collection: Journal of Materials Chemistry A HOT Papers
Paper

Vapor phase synthesis of metal–organic frameworks on a nanofibrous aerogel creates enhanced functionality

Vapor-phase synthesis of metal–organic frameworks (MOFs) on nanofibrous aerogels provides a hierarchically porous and mechanically robust material platform for use in a multitude of applications, from carbon dioxide capture to heavy metal removal.

Graphical abstract: Vapor phase synthesis of metal–organic frameworks on a nanofibrous aerogel creates enhanced functionality
From the themed collection: Functional Framework Materials
Paper

Triboelectric nanogenerators enhanced by a metal–organic framework for sustainable power generation and air mouse technology

In this study we have synthesized a Cd-MOF and explored for TENG performance. MOF-TENG device utilzed for various low powered electronics. Furthermore, device was attached to the finger of a glove to control the mouse movement. This device setup was used for biomechanical energy harvesting.

Graphical abstract: Triboelectric nanogenerators enhanced by a metal–organic framework for sustainable power generation and air mouse technology
From the themed collection: Functional Framework Materials
Paper

The N, P co-doped carbon-loading Ni3P@Ni heterojunction nanocomposites derived from polybenzimidazoles grafted with oxygen-phosphorus group as high-efficiency electrocatalyst for oxygen evolution reaction

Ni3P@Ni/CNP exhibits excellent OER electrocatalytic activity. The current density of 10 mA cm−2 in 1 M KOH electrolyte only needs an overpotential of 239 mV in the presence of the catalyst, and it showed excellent stability.

Graphical abstract: The N, P co-doped carbon-loading Ni3P@Ni heterojunction nanocomposites derived from polybenzimidazoles grafted with oxygen-phosphorus group as high-efficiency electrocatalyst for oxygen evolution reaction
From the themed collection: Functional Framework Materials
Open Access Paper

Expanding the horizons of porphyrin metal–organic frameworks via catecholate coordination: exploring structural diversity, material stability and redox properties

Three novel MOF phases based on catecholate porphyrin and M(III) cations are isolated. Their properties are elucidated through comprehensive structural and physical analyses, and a high surface area and reversible redox activity are evidenced.

Graphical abstract: Expanding the horizons of porphyrin metal–organic frameworks via catecholate coordination: exploring structural diversity, material stability and redox properties
From the themed collection: Functional Framework Materials
Open Access Paper

Nitrogen-rich porous organic cages with high acetylene storage and separation performance

Two nitrogen-rich porous organic cages (POCs) have been investigated for acetylene (C2H2) storage and separation applications, achieving a high C2H2 uptake value of up to 146 cm3 g−1 at 298 K and 1 atm and effective separation of C2H2/CO2 mixtures.

Graphical abstract: Nitrogen-rich porous organic cages with high acetylene storage and separation performance
From the themed collection: Functional Framework Materials
Paper

A robust conductive covalent organic framework for ultra-stable potassium storage

A conductive and redox-active COF (Ni-TTF) have been synthesized and applied as an promising anode for KIBs, exhibiting remarkable stability with no capacity loss after 2500 cycles at 2C, making it one of the best organic anode materials for KIBs.

Graphical abstract: A robust conductive covalent organic framework for ultra-stable potassium storage
From the themed collection: Functional Framework Materials
Open Access Paper

Utilizing machine learning to optimize metal–organic framework-derived polymer membranes for gas separation

In this study, machine learning has been used to assist the fabrication of high-quality SURMOFs that are then further used as a template to fabricate polymer-based SURGEL membranes for gas separation.

Graphical abstract: Utilizing machine learning to optimize metal–organic framework-derived polymer membranes for gas separation
From the themed collection: Functional Framework Materials
Paper

A green and ultrafast one-pot mechanochemical approach for efficient biocatalyst encapsulation in MOFs: insights from experiments and computation

The ultra-fast and green encapsulation of biomolecules in ZIF-90 results in biocomposites with biological activity and a size-sheltering effect. This is achieved through a 10-second, one-pot mechanical synthesis, assisted by a small amount of buffer.

Graphical abstract: A green and ultrafast one-pot mechanochemical approach for efficient biocatalyst encapsulation in MOFs: insights from experiments and computation
From the themed collection: Functional Framework Materials
Paper

Post-synthetic modification of zeolitic imidazolate framework-90 via Schiff base reaction for ultrahigh iodine capture

Three zeolitic imidazolate framework-90 derivatives were synthesized via post-synthetic modification method, which exhibited ultrahigh iodine capture capacities.

Graphical abstract: Post-synthetic modification of zeolitic imidazolate framework-90 via Schiff base reaction for ultrahigh iodine capture
From the themed collection: Functional Framework Materials
Paper

Metal–organic framework-derived CuO catalysts for the efficient hydrogenolysis of hardwood lignin into phenolic monomers

The synergistic effects of the fabricated CuO/c-UiO-66 catalyst and hydrogen lead to the efficient scission of C–O bonds of the methoxylated β-O-4′ intermediates, transforming hardwood lignins into monophenols.

Graphical abstract: Metal–organic framework-derived CuO catalysts for the efficient hydrogenolysis of hardwood lignin into phenolic monomers
From the themed collection: Functional Framework Materials
Paper

Fe(III)-carboxythiolate layered metal–organic frameworks with interest as active materials for rechargeable alkali-ion batteries

A series of Fe(III)-thiolate layered MOFs was prepared. These solids present a strong absorption in the visible range, a good chemical stability and an interesting electrochemical activity.

Graphical abstract: Fe(iii)-carboxythiolate layered metal–organic frameworks with interest as active materials for rechargeable alkali-ion batteries
From the themed collection: Functional Framework Materials
Paper

Linker engineering to regulate the fluorescence of hydrazone-linked covalent organic frameworks for the real-time visual detection of norfloxacin and multiple information encryption

The misuse and improper handling of norfloxacin (NOR) can cause serious harm; therefore, the sensitive and visual detection of NOR is of great significance.

Graphical abstract: Linker engineering to regulate the fluorescence of hydrazone-linked covalent organic frameworks for the real-time visual detection of norfloxacin and multiple information encryption
From the themed collection: Functional Framework Materials
Paper

Protein-induced modifications in crystal morphology of a hydrogen-bonded organic framework

In this work, we studied the encapsulation of a range of proteins in a hydrogen-bonded organic framework (HOF) comprised of a tetraamidinium cation and diazobenzene-based dicarboxylate anion.

Graphical abstract: Protein-induced modifications in crystal morphology of a hydrogen-bonded organic framework
From the themed collection: Functional Framework Materials
Open Access Paper

Using small angle neutron scattering to explore porosity, connectivity and accessibility, towards optimised hierarchical solid acid catalysts

The properties of hierarchical solid acid materials have been explored combining experimental catalysis findings, neutron scattering and positron lifetime spectroscopy to understand the multi-porous nature of these materials.

Graphical abstract: Using small angle neutron scattering to explore porosity, connectivity and accessibility, towards optimised hierarchical solid acid catalysts
From the themed collection: Functional Framework Materials
Paper

Nano vs. bulk: surfactant-controlled photophysical and morphological features of luminescent lanthanide MOFs

Surfactant-assisted nano-synthesis and post-synthetic modification of three archetype bulk MOFs illuminate the size-dependent morphological and photophysical property changes of nanoMOFs.

Graphical abstract: Nano vs. bulk: surfactant-controlled photophysical and morphological features of luminescent lanthanide MOFs
From the themed collection: Functional Framework Materials
Paper

A hydrophobic–superoleophilic 2D Zr-based alkyne-rich metal–organic framework for oil/water separation and solar-assisted oil evaporation

A hydrophobic/superoleophilic spongy composite based on alkyne-rich 2D Zr-MOF and polyurethane executes solar-assisted self-cleaning oil/water separation.

Graphical abstract: A hydrophobic–superoleophilic 2D Zr-based alkyne-rich metal–organic framework for oil/water separation and solar-assisted oil evaporation
From the themed collection: Functional Framework Materials
Paper

Hydrogen-bonded organic framework with tailored pores prepared by enlarging the core size for high-performance Xe/Kr separation

A pore engineering optimized strategy by enlarging the core size of rigid monomers is proposed to increase the pore size of benzene cyanide-based HOFs, resulting in the highest performing HOF material for Xe/Kr separation.

Graphical abstract: Hydrogen-bonded organic framework with tailored pores prepared by enlarging the core size for high-performance Xe/Kr separation
From the themed collection: Functional Framework Materials
Paper

Regulating the selective adsorption of OH* over the equatorial position of Co3O4via doping of Ru ions for efficient water oxidation reaction

The synthesized Ru-Co3O4 delivers a high performance towards the OER in alkaline (292 mV) and acidic (365 mV) media. Structural optimization demonstrates the distortion of bond length favours the selective adsorption of OH which facilitates the OER.

Graphical abstract: Regulating the selective adsorption of OH* over the equatorial position of Co3O4via doping of Ru ions for efficient water oxidation reaction
From the themed collection: Functional Framework Materials
Paper

Guest-induced breathing mediated selective alcohol recovery from water by MIL-88A(Fe)

Guest-induced breathing mediated selective alcohol adsorption.

Graphical abstract: Guest-induced breathing mediated selective alcohol recovery from water by MIL-88A(Fe)
From the themed collection: Functional Framework Materials
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About this collection

Porous materials, particularly those with ordered structures, present interesting physicochemical properties that make them ideal platforms to be explored in the field of fluid storage/separation, catalysis, energy storage, and chemical sensing. Metal–organic frameworks (MOFs) and covalent–organic frameworks (COFs) are among the most promising nano-scaled porous crystalline materials presenting continuous breakthroughs in various relevant applications in recent years. Their exceptional features attracted the great interest of scientists (e.g. chemists, physicists, engineers) who have taken advantage of their unique structures and properties to solve complex problems. This collection focuses on the synthesis, and understanding, of MOFs and COFs as well as their composite materials and provides an overview of their recent development toward practical applications. The selected articles will identify the challenges and address key issues in MOFs/COFs science and engineering. We would like to receive original manuscripts in, but not limited to, the following areas: Design and synthesis of MOFs/COFs, smart materials and advanced characterization, adsorption and separation, catalysis and sensing, device fabrication and application, theoretical calculation and machine learning, energy conversion and storage, environment and green-sustainable materials, biotechnology, as well as scaled-up and industrialization. Papers on MOFs for energy-related applications are most welcome.

This collection in Journal of Materials Chemistry A is guest edited by Paolo Falcaro (TU Graz, Austria), Patricia Horcajada (IMDEA Energy, Spain), and Dan Li (Jinan University, China).


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