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Open research questions in Covalent Organic Framework Applications

91 unresolved questions extracted from the limitations and future-work sections of 1,391 Covalent Organic Framework Applications papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Strong excitonic effects in COFs. Rapid carrier recombination in COFs. The need for a rational design framework for high-activity COF-based photocatalysts.

    Structure–Activity Relationships in D–π–A Covalent Organic Frameworks for Photocatalytic Water Splitting: Insights from DFT and TD-DFT Calculations · 2026 · DOI

  • Investigating the photocatalytic performance of other D-π-A-type COFs, - Experimental validation of the calculated properties, - Exploring the application of COFs in other photocatalytic reactions

    Structure–Activity Relationships in D–π–A Covalent Organic Frameworks for Photocatalytic Water Splitting: Insights from DFT and TD-DFT Calculations · 2026 · DOI

  • Interfacial compatibility remains a key limitation, - MOFs often face limitations such as moderate stability under harsh chemical conditions, - Poor processability and challenges in integrating MOFs into practical devices, - Defective MOF growth or unintended interactions with functional groups in POPs can limit polymer performance or porosity development

    Metal–Organic Frameworks as Fillers in Porous Organic Polymer-Based Hybrid Materials: Innovations in Composition, Processing, and Applications · 2025 · DOI

  • The gap is the limitation of MOFs in terms of stability under harsh chemical conditions. The gap is the lack of processability and integration of MOFs into practical devices. The gap is the need for hybrid materials with improved properties for advanced separation processes.

    Metal–Organic Frameworks as Fillers in Porous Organic Polymer-Based Hybrid Materials: Innovations in Composition, Processing, and Applications · 2025 · DOI

  • Abstract The synthesis of highly crystalline covalent organic frameworks (COFs) has recently been achieved, but strategies to obtain monodispersed single crystals of uniform size and shape remain elusive.

    Nanoparticle-Mediated Synthesis of Single-Crystal Covalent Organic Frameworks of Uniform Size and Shape · 2026 · DOI

  • This crucial feature not only prevents aggregation of the magnetic core, which is a significant limitation of conventional adsorbents, but also enables robust interactions between the core and the outer covalent organic framework (COF).

    Magnetic Covalent Organic Frameworks (MCOFs): A Sustainable Solution for Emerging Organic Contaminants (EOCs) from the River · 2026 · DOI

  • Due to the limited research on water sorption kinetics and photogenerated charge carrier dynamics, the interaction mechanism between photocatalysts and water molecules remains unclear.

    Thiazole-Bimodulated Covalent Organic Frameworks for Synergistic Water Harvesting and Photosplitting · 2025 · DOI

  • A sustainable alternative under ambient conditions remains elusive, hindered by challenges in selectivity and energy efficiency.

    Microdroplet Cascade Catalysis for Highly Selective Production of Propylene Glycol under Ambient Conditions · 2025 · DOI

  • While the influence of COF structural and optoelectronic properties on HER is well‐studied, the role of surface charge in optimizing interfacial interactions with reactants remains underexplored.

    Surface Charge Modulation in Covalent Organic Frameworks for Controlled Pt‐Photodeposition and Enhanced Photocatalytic Hydrogen Evolution · 2025 · DOI

  • However, engineering of periodic frustrated Lewis pairs (PFLPs) on the surfaces of semiconductor photocatalysts presents significant challenges, and the synergistic mechanism of PFLPs in CO 2 photoreduction remains unclear.

    Periodic Frustrated Lewis Pairs on Bimetallic Oxide Semiconductors for CO 2 Adsorption and Photocatalytic Conversion · 2025 · DOI

  • However, the types of reactions and the availability of monomers for synthesizing sp 2 -c linked COFs are considerably limited by the irreversibility of the C═C bond, and the complete π-conjugated structure restricts their in-depth research in hydrophilicity, membrane materials, and proton conductivity.

    Thiol–Ene Click Chemistry: A General Strategy for Tuning the Properties of Vinylene-Linked Covalent Organic Frameworks · 2025 · DOI

  • In addition, the chemical stability of most imine-COFs remains insufficient due to the reversible nature of imine linkage.

    Facile Transformation of Imine Linkages and Functionalization of Aldehyde in the Covalent Organic Frameworks for Stable and Enhanced Photocatalytic Hydrogen Peroxide Production · 2025 · DOI

  • Membranes with aligned one‐dimentional (1D) pores, high pore density, and organized dangling ionic groups are theorized to offer superior ion permeability and selectivity, yet these configurations remain significantly underexplored.

    Covalent Organic Framework Membranes with Spatially Aligned Ionic Sites Achieve Record Thermo‐Osmotic Output Power Density · 2025 · DOI

  • However, the relationship between the coordination environment of metals in a covalent organic framework and catalytic properties is still rarely studied.

    Modulating Coordination Environment of Single Nickel Atom in Covalent Organic Framework to Enhance Photocatalytic Hydrogen Evolution Reaction · 2025 · DOI

  • Covalent organic frameworks (COFs) have attracted much attention due to the advantages of the introduction of functional groups and efficient electron transfer by covalent linkage, which will be a promising electrocatalyst for EAR, while no studies have achieved EAR by using COFs.

    Multifunctional Engineering and Active Sites Regulation of Covalent Organic Frameworks for Efficient Electrocatalytic Acetylene Hydrogenation to Ethylene · 2025 · DOI

  • Future research should focus on enhancing synthesis efficiency, ensuring long-term material stability, and addressing economic feasibility for large-scale deployment.

    Cross-material synergies of carbon nanomaterials, MOFs, and COFs: Innovative approaches for sustainable environmental remediation and resource recovery · 2025 · DOI

  • However, despite their transformative potential, the design, synthesis, and application of hybrid COF-based materials—engineered by integrating COFs with complementary functional components—remain underexplored.

    Hybrid covalent organic frameworks: advanced material for critical metals recovery and other applications · 2025 · DOI

  • However, the optimization and improvement of COF performances have mainly relied on trial-and-error approaches using bulk ensemble samples, and high-performance COFs for IO 3 – treatment are still lacking.

    Imaging the Encapsulation of Formic Acids in Single LZU-111 COFs as Reductants, Microreactors, and Optical Microcavities for Record-High Iodate Anion Removal · 2025 · DOI

  • This “grafting-to” COF modification strategy, which has not been reported before, offers a unique approach for constructing highly active COF photocatalysts containing intramolecular D-A structures and exhibits great potential in the future design of photocatalysts and antibacterial therapies.

    Reprogram Local Electronic Configuration in Multicomponent Covalent–Organic Frameworks for Efficient Hydrogen Peroxide Photoproduction · 2025 · DOI

  • However, their practical use in energy storage remains limited by their poor stability and electrochemical performance.

    Hexaazatriphenylene–Diaminobenzidine Covalent Organic Framework: A Promising Nitrogen Abundant Material for Electrochemical Energy Storage Applications · 2025 · DOI

  • However, their widespread use is often hindered by limited thermal and mechanical stabilities─properties that are not well understood across the vast COF chemical space.

    Guiding the Design of Multifunctional Covalent Organic Frameworks: High-Throughput Screening of Thermal and Mechanical Properties · 2025 · DOI

  • Moreover, the underlying mechanisms governing excited-state energy dissipation remain poorly understood.

    Reductive Transformation of Imine Covalent Organic Frameworks into Emissive Polymers: Insights into Emission Quenching · 2025 · DOI

  • Future research should explore pilot-scale production and application-specific modifications to optimize real-world performance.

    Optimized H3PO4 activation of Nypa fruticans roots for high-performance activated carbon: Structural control and enhanced iodine adsorption · 2025 · DOI

  • Multicomponent reactions remain sparsely utilized for the construction of porous organic polymers (POPs).

    An Imidazole-Integrated Porous Organic Polymer as an Expedient Heterogeneous Organocatalyst for One-Pot Synthesis of Pyrans, Chromenes, and Spiropyrans · 2025 · DOI

  • However, the charge transport pathways within D–A COFs and their effects on photocatalytic efficiency remain poorly understood.

    Charge Transport Pathways in Vinylene-Linked Donor–Acceptor Covalent Organic Frameworks Strongly Influence the Performance of Photocatalysis · 2025 · DOI

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91 open questions have been extracted from the limitations and future-work passages of 1,391 Covalent Organic Framework Applications papers in our 4.5M-paper local library. Each one below links back to the study that raised it, so you can read the original claim in context.

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