Bottom-up method
2-3Covers direct growth of nanosheets from metal nodes and ligands by restricting vertical growth while allowing lateral extension.
Relevance: Core · 2 · Bottom-up method
Review · secondary evidenceReview
Ultrathin two-dimensional metal-organic framework nanosheets for functional electronic devices
Authors unavailable · Coordination Chemistry Reviews · 2018
10review sections
8material families
15review claims
25secondary benchmarks
24cited studies
7research gaps
Review scope
Review recent advances in synthesis routes for ultrathin two-dimensional MOF nanosheets and their use as active materials in functional electronic devices.
- Coverage
- 2010–2018
- Category
- Review Thin Film Device
- Material scope
- ultrathin two-dimensional MOF nanosheets · layered and non-layered MOF-derived nanosheets · porphyrin, carboxylate, dithiolene, hexaaminobenzene and HITP/HHTP conductive 2D MOFs · 2D MOF composites
- Transport scope
- electronic conductivity · charge mobility · ion diffusion in pores · redox-active charge storage · sensor transduction by resistance, capacitance, current and fluorescence
- Application scope
- battery · supercapacitor · chemiresistive sensor · capacitive sensor · amperometric sensor · luminescent sensor · field-effect transistor · white light-emitting diode · photoelectrochemical composite device
- Explicit exclusions
- primary extraction of experimental recipes · bulk MOFs without nanosheet or thin-film relevance
- Source
- 1 · Abstract
- Evidence role
- Context, taxonomy and secondary benchmarking
Section map
The review’s argument is preserved as a navigable set of section summaries.
Composites of 2D MOF nanosheets for functional electronic devices
6Frames 2D MOF composites as a way to combine functions and offset component weaknesses, using CuS/Cu-TCPP photoelectrochemical performance as an example.
Relevance: Supporting · 6 · Composites of 2D MOF nanosheets for functional electronic devices
Energy storage devices
3-4Reviews lithium-ion battery anodes and supercapacitor electrodes, linking performance to surface area, redox sites, conductivity, ordered pores and diffusion length.
Relevance: Supporting · 4 · Energy storage devices
Figures and tables
7-14Figure captions collect synthesis schematics, nanosheet morphologies, device layouts and performance plots for the selected cited studies.
Relevance: Supporting · 7-14 · Figures and tables · Figs. 1-14
Introduction
1Frames MOFs as tunable porous coordination materials and introduces ultrathin 2D MOF nanosheets as freestanding sheets or nanofilms with micron lateral size and nanoscale thickness.
Relevance: Core · 1 · Introduction
Other electronic devices
6Discusses field-effect transistors and WLEDs, highlighting mobility, threshold voltage, on/off ratio, optical yield and modulation performance.
Relevance: Core · 6 · Field-effect transistor
Summary and future outlook
6-7Identifies remaining needs in uniform high-yield synthesis, prediction of electronic properties, mechanism elucidation, conductivity improvement, flexible devices and real-device criteria.
Relevance: Core · 6 · Summary and future outlook
Electronic sensor devices
4-6Surveys chemiresistive, capacitive, amperometric and luminescent sensing with 2D MOF nanosheets, including transduction mechanisms and device architectures.
Relevance: Core · 4 · Electronic sensor devices
Strategies to fabricate ultrathin 2D MOF nanosheets
1-3Organises synthesis into top-down and bottom-up routes, then surveys exfoliation, interfacial, three-layer, surfactant-assisted, template-assisted and competitive-coordination approaches.
Relevance: Core · 1 · Strategies to fabricate ultrathin 2D MOF nanosheets
Top-down method
1-2Describes physical and chemical delamination of preformed layered or pillared MOFs, emphasising interlayer interactions, controlled intercalation, and limitations in yield and damage.
Relevance: Core · 1 · Top-down method
Taxonomies
Classification systems are attributed to this review and are not treated as a global material registry.
Growth-Control StrategyAuthor-proposed
Bottom-up synthetic methods
Bottom-up synthesis is organised by how vertical growth is suppressed and lateral nanosheet growth is promoted.
Categories: interfacial synthetic method · three-layer synthetic method · surfactant-assisted synthetic method · template-assisted synthetic method · competitive coordination strategy
2 · Bottom-up method
Integrated Functional ComponentAuthor-proposed
2D MOF composite constituents
Composite examples are organised by the second functional material combined with the 2D MOF nanosheet.
Categories: noble metals · metal oxides · metal sulfides · polymers · carbon-based materials · other MOFs
6 · Composites of 2D MOF nanosheets for functional electronic devices
Application TypeAuthor-proposed
Functional electronic device classes
The review groups device examples by broad electronic-device application, then subdivides energy storage and sensors.
Categories: energy storage devices · electronic sensor devices · field-effect transistor · white light-emitting diode · composite photoelectrochemical devices
3 · Ultrathin 2D MOFs nanosheets for functional electronic devices
Device Geometry
FET architectures
The FET discussion situates 2D MOF active channels within common transistor contact/gate geometries.
Categories: bottom gate/top contact · bottom gate/bottom contact · top gate/bottom contact
6 · Field-effect transistor
Electronic ConjugationAuthor-proposed
Interfacial 2D MOF species
For interfacial products, the review separates non-coplanar/non-conjugated coordination nanosheets from pi-conjugated hexagonal layered frameworks relevant to transport.
Categories: non-conjugated 2D MOF nanosheets · pi-conjugated 2D MOF nanosheets
2 · Interfacial synthetic method
Interface PositionAuthor-proposed
Interfacial synthesis geometries
The review distinguishes thick liquid/liquid films from gas/liquid approaches that can yield single- or few-layer MOF films.
Categories: liquid/liquid interface synthesis · gas/liquid interface synthesis
2 · Interfacial synthetic method
Measured SignalAuthor-proposed
Sensor transduction modes
The sensor section classifies devices by the signal generated after analyte uptake or interaction.
Categories: resistance · capacitance · current · fluorescence
4 · Electronic sensor devices
Charge-Storage Mechanism
Supercapacitor working principles
The review uses the standard EDLC/pseudocapacitor distinction to contextualise 2D MOF electrode behaviour.
Categories: electrochemical double-layer capacitor · pseudo-capacitor
4 · Supercapacitor
Fabrication RouteAuthor-proposed
Top-down versus bottom-up synthesis
The review's main synthesis organisation separates delamination of existing bulk MOFs from direct nanosheet growth from precursors.
Categories: top-down method · bottom-up method
1 · Strategies to fabricate ultrathin 2D MOF nanosheets
Delamination MechanismAuthor-proposed
Top-down subroutes
Top-down routes are divided by whether weak interlayer forces are overcome mechanically or by chemical/electrochemical modification of interlayer/pillar interactions.
Categories: physical exfoliation · chemical exfoliation · intercalation/chemical exfoliation · electrochemical/chemical exfoliation
1-2 · Chemical exfoliation method
Material families
Review-defined families retain their representative materials and conduction descriptions.
Dipyrrin and terpyridine coordination nanosheets
Multi-Layer Or Single-Layer Interfacial FilmsInterfacially grown non-conjugated coordination nanosheets based on non-coplanar organic linkers such as dipyrrin and terpyridine.
Conduction: Presented mainly as morphology/process examples rather than high-conductivity channels.
Representative materials: N1 bis(dipyrrinato)zinc(II) nanosheets · bis(terpyridine)Fe(II) complex nanosheets
Nodes / linkers: Zn · Fe · dipyrrin · terpyridine
2 · Interfacial synthetic method · Fig. 3
M-HAB conductive MOFs
Ultrathin 2D Nanosheets; Additive-Free Pressed ElectrodesConductive ultrathin 2D MOFs formed from hexaaminobenzene linkers and Ni or Cu nodes.
Conduction: Reported as electrically conductive MOF electrodes with pseudocapacitive redox signatures and high volumetric capacitance.
Representative materials: Cu-HAB · Ni-HAB
Nodes / linkers: Cu · Ni · hexaaminobenzene
4 · Supercapacitor · Fig. 8
HITP/HHTP triphenylene 2D MOFs
Graphene-Like 2D MOF Nanosheets Or Nanofilms With 1D ChannelsConductive layered frameworks based on triphenylene-derived hexaimino or hexahydroxy linkers and square-planar metal nodes.
Conduction: The review cites bulk conductivity, p-type FET behaviour and chemiresistive response from pi-conjugated charge delocalisation.
Representative materials: Ni3(HITP)2 · Cu3(HITP)2 · Cu3(HHTP)2
Nodes / linkers: Ni · Cu · HITP · HHTP
4-6 · Supercapacitor; Chemiresistive sensor; Field-effect transistor · Figs. 9, 13
Layered exfoliable MOFs
Bulk Layered Precursors Delaminated To Ultrathin 2D NanosheetsBulk layered MOFs with weak interlayer van der Waals, hydrogen-bonding or pi-stacking interactions that can be disrupted into few-layer or monolayer nanosheets.
Conduction: Transport is not the main emphasis; the family supplies morphology and dimensionality precedents for nanosheet processing.
Representative materials: [Cu2Br(IN)2]n · ZSB-1 · MnDMS · UiO-67(Hf)
Nodes / linkers: Cu · Zn · Mn · Hf · isonicotinato · sulfonylbibenzoic acid · bipyridyl thiophene · dicarboxylates
1-2 · Physical exfoliation method · Fig. 1
MIL-53 type nanosheets
Nonlayered Nanosheets And Template-Grown NanosheetsNon-layered or self-templated MIL-53-related nanosheets used in capacitive and luminescent sensing.
Conduction: Emphasis is diffusion-limited sensing rather than intrinsic electronic conduction.
Representative materials: NH2-MIL-53(Al) · MIL-53(FeNi)
Nodes / linkers: Al · Fe · Ni · 2-aminoterephthalate · terephthalate
5 · Capacitive sensor; Luminescent sensor · Figs. 10, 12
Pi-conjugated dithiolene and BHT 2D MOFs
Single-Layer To Thin-Film Pi-Conjugated 2D MOFsHexagonal layered, planar-ligand 2D MOF nanosheets based on metal bis(dithiolene), benzenehexathiol or related sulphur-rich linkers.
Conduction: The review links planar conjugation and metal-d orbital interactions to gas sensing and FET transport.
Representative materials: Ni-BHT · Cu-BHT · Ni3C12S12 · [Cu3(C6S6)]n
Nodes / linkers: Ni · Cu · Co · Fe · Pd · Pt · benzenehexathiol · bis(dithiolene) · C6S6
2, 5-6 · Interfacial synthetic method; Chemiresistive sensor; Field-effect transistor
Porphyrinic TCPP MOF nanosheets
Ultrathin 2D Porphyrin-Linked MOF Nanosheets And Composites2D MOFs built from TCPP or metalloporphyrin linkers and paddlewheel metal secondary building units, often processed as ultrathin nanosheets.
Conduction: Used for photocurrent, amperometric and nanosheet-growth examples; redox centres and conjugated porphyrins support device activity.
Representative materials: Zn2(PdTCPP) · Zn-TCPP · Cu-TCPP · Co-TCPP(Fe) · CuS/Cu-TCPP
Nodes / linkers: Zn · Cu · Co · Fe · tetrakis(4-carboxyphenyl)porphyrin · Fe-TCPP
2-6 · Chemical exfoliation method; Surfactant-assisted synthetic method; Amperometric sensor; Composites · Figs. 2, 5, 11, 14
Template-supported MOF nanosheet arrays
Vertically Arrayed 2D Nanosheets On SupportsUltrathin MOF nanosheet arrays grown in situ on conductive or porous supports such as Ni foam, stainless steel mesh or MXene.
Conduction: Supports are used to improve porosity, conductivity and catalytic/electrochemical access rather than simply exfoliate freestanding films.
Representative materials: NiFe-MOF/NF · Cu-MOF/NF · CoBDC on Ti3C2Tx
Nodes / linkers: Ni · Fe · Cu · Co · 2,6-naphthalenedicarboxylate · BDC
3 · Template-assisted synthetic method · Fig. 6
Synthesis strategies
Review-level synthesis principles remain separate from primary-study recipes.
Chemical and electrochemical exfoliation
In situ chemistry modifies interlaminar molecules or oxidises/removes pillar ligands to weaken interlayer bonding and delaminate bulk MOFs.
Claimed effects: Can improve yield and tune thickness compared with purely mechanical exfoliation.
Controlling variables: intercalant chemistry · reducing agent amount · reaction time · electrochemical oxidation of pillars
Representative materials: Zn2(PdTCPP) · 2D-Co-NS
Caveat: Still depends on suitable layered or pillared precursors and chemical routes may be framework-specific.
2 · Chemical exfoliation method · Fig. 2
Competitive coordination and etching
A competitive ligand modulates growth and etches initially formed 2D solid nanosheets, introducing mesopores into otherwise microporous MOF nanosheets.
Claimed effects: Produces hierarchical-pore nanosheets containing both micropores and added mesopores.
Controlling variables: competitive ligand binding strength · surface Zn4O sites · ligand diffusion · etching/release balance
Representative materials: 2D H-MOF-5
Caveat: The method uses controlled etching, so morphology and defect density require careful primary-study interpretation.
3 · Competitive coordination strategy
Interfacial synthesis
Coordination reactions are confined to liquid/liquid or gas/liquid interfaces, where the interface regulates nucleation and planar growth and allows film transfer to substrates.
Claimed effects: Can form oriented ultrathin films and single/few-layer nanosheets, especially at gas/liquid interfaces.
Controlling variables: interface type · interface area · ligand and metal diffusion · solvent evaporation · substrate transfer
Representative materials: N1 bis(dipyrrinato)zinc(II) · Ni-BHT · CoTCPP-py-Cu
Caveat: Liquid/liquid films may be hundreds of nanometres thick, while interfacial yield remains low because interface area is limited.
2 · Interfacial synthetic method · Fig. 3
Physical exfoliation of layered MOFs
Mechanical forces such as sonication, ball-milling, shaking or grinding break weak interlayer interactions without ideally breaking intralayer coordination bonds.
Claimed effects: Can generate monolayer or few-layer nanosheets from layered precursors, but quality and yield are limited by damage, restacking and precursor scope.
Controlling variables: interlayer interaction strength · choice of mechanical force · solvent-MOF interaction · sonication or milling severity
Representative materials: [Cu2Br(IN)2]n · ZSB-1
Caveat: Mechanical exfoliation is described as impeded by inhomogeneous thickness, structural deterioration, layer damage and restacking; soft exfoliation still has low yields and requires weakly layered MOFs.
1-2 · Physical exfoliation method · Fig. 1
Surfactant- or modulator-assisted anisotropic growth
Surfactants or small molecules selectively bind specific MOF crystal surfaces and suppress growth perpendicular to the plane.
Claimed effects: Enables high-yield, uniform, sub-10 nm nanosheets in multiple MOF families.
Controlling variables: surfactant species · surfactant amount · surface binding selectivity · metal-linker coordination geometry
Representative materials: Zn-TCPP · Cu-TCPP · Zn(bim)OAc · [Cu2(ndc)2(dabco)]n
Caveat: Future work still needs growth-control agents that bind weakly enough to be removed cleanly.
3 · Surfactant-assisted synthetic method · Fig. 5
Template-assisted growth on supports
MOF nanosheets nucleate and grow directly on a support, producing hierarchical arrays with macro/mesoporosity and device-relevant contact.
Claimed effects: Increases porosity, improves conductivity/contact, and provides more catalytic or electrochemical centres.
Controlling variables: support composition · surface nucleation sites · metal salt identity · linker geometry
Representative materials: NiFe-MOF/NF · Cu-MOF/NF · CoBDC on Ti3C2Tx
Caveat: Device gains may include support effects, so primary studies are needed to separate nanosheet and substrate contributions.
3 · Template-assisted synthetic method · Fig. 6
Three-layer diffusion-mediated synthesis
Metal, linker and miscible co-solvent layers are stacked by density so slow diffusion nucleates nanosheets in an intermediate region, after which products sink and avoid overgrowth.
Claimed effects: Produces freestanding, higher-yield nanosheets and can extend from CuBDC to related BDC/NDC frameworks.
Controlling variables: solvent density gradient · diffusion rate · intermediate co-solvent layer · metal/linker concentrations
Representative materials: CuBDC · CoBDC · ZnBDC
Caveat: The review gives morphology examples but not a general electronic transport mechanism for this route.
3 · Three-layer synthetic method · Fig. 4
Review claims
These are the review authors’ synthesis, not newly measured results.
Author InterpretationHigh supportDefinition Scope
Ultrathin 2D MOF nanosheets are framed as freestanding nanosheets or nanofilms whose nanoscale thickness and micron-scale lateral dimensions expose active sites and anisotropic pore structures.
Evidence basis: multi_reference
Caveat: This is a review-level definition and motivation, not a measured property for all 2D MOFs.
1 · Introduction
Author InterpretationMedium supportSynthesis Strategy
Bottom-up methods are claimed to offer more uniform thickness and moderate-condition processing because they tune facet growth during coordination assembly.
Evidence basis: multi_reference
Caveat: Uniformity and yield are route- and material-specific; some interfacial methods remain low-yield.
2 · Bottom-up method
DescriptiveMedium supportMeasurement Interpretation
Capacitive sensing is interpreted through analyte-driven changes in MOF dielectric properties during gas adsorption and desorption.
Evidence basis: multi_reference
Caveat: The review gives device principle and one nanosheet example; primary studies are needed for equivalent-circuit analysis.
5 · Capacitive sensor · Fig. 10
Author InterpretationMedium supportCaveat
Chemiresistive responses in conductive 2D MOF arrays are not reducible to one mechanism; the review mentions charge transfer and hydrogen bonding as competing contributions.
Evidence basis: single_reference
Caveat: This is the review's mechanistic interpretation of VOC sensing, not a general proof for all analytes.
5 · Chemiresistive sensor
Author InterpretationMedium supportStructure Property Link
2D MOF composites are presented as a strategy to combine complementary component advantages and improve device performance beyond individual materials.
Evidence basis: multi_reference
Caveat: The claim is broad; component-specific controls are required in primary studies.
6 · Composites of 2D MOF nanosheets for functional electronic devices · Fig. 14
Author InterpretationHigh supportApplication Relevance
Pi-conjugated 2D MOF nanosheets are highlighted as especially important for electronic sensors because conductivity and charge mobility enable resistance-based readout.
Evidence basis: multi_reference
Caveat: The review notes that concentration-dependent responses can involve multiple mechanisms, not only simple charge transfer.
4-5 · Electronic sensor devices; Chemiresistive sensor · Fig. 9
Author InterpretationHigh supportCaveat
The review states that most 2D MOF electronic-device working mechanisms remain undefined, making mechanism elucidation a research priority.
Evidence basis: review_reasoning
Caveat: This is a broad field-level gap, not a single-device conclusion.
7 · Summary and future outlook
Author InterpretationMedium supportTransport Mechanism
For battery and supercapacitor examples, the review attributes improved activity to short ion/electron transport distances, exposed redox sites and ordered pores.
Evidence basis: multi_reference
Caveat: The review sometimes summarises complex electrode formulations; primary papers are needed for electrode-composition controls.
4 · Battery
DescriptiveHigh supportMeasurement Interpretation
The review identifies threshold voltage and charge-carrier mobility as key FET performance metrics for 2D MOF channels.
Evidence basis: multi_reference
Caveat: FET metrics are device-geometry dependent and should not be compared without checking primary fabrication conditions.
6 · Field-effect transistor · Fig. 13
Author InterpretationHigh supportSynthesis Strategy
Interfacial synthesis can produce transferable oriented films, but nanosheet yield is constrained by available interface area.
Evidence basis: multi_reference
Caveat: Liquid/liquid products may be much thicker than ideal monolayers.
2 · Interfacial synthetic method · Fig. 3
Author InterpretationHigh supportCaveat
Mechanical exfoliation can damage or restack sheets and commonly produces inhomogeneous nanosheet thickness.
Evidence basis: review_reasoning
Caveat: Soft physical exfoliation partly addresses this but does not remove yield or precursor limitations.
1-2 · Physical exfoliation method
Author InterpretationMedium supportApplication Relevance
The review positions MOFs as device-relevant because compositional tunability, porosity and electronic/mechanical features can complement inorganic electronic materials.
Evidence basis: multi_reference
Caveat: The general statement covers broad MOFs; device-specific performance must be checked in primary reports.
1 · Introduction
Author InterpretationHigh supportCaveat
Despite structure-dependent studies, accurately predicting electronic properties of ultrathin 2D MOF nanosheets remains difficult.
Evidence basis: review_reasoning
Caveat: This is an outlook statement and should be cited as secondary interpretation.
7 · Summary and future outlook
Consensus SummaryHigh supportStructure Property Link
Surfactants and small modulators control nanosheet thickness by selectively adsorbing to surface sites and suppressing vertical crystal growth.
Evidence basis: multi_reference
Caveat: Residual additives and binding strength are important issues for later device interpretation.
3 · Surfactant-assisted synthetic method · Fig. 5
DescriptiveHigh supportSynthesis Strategy
Top-down approaches are best understood as delamination of pristine layered or pillared MOFs by external force or interlayer chemistry.
Evidence basis: multi_reference
Caveat: The review stresses precursor limitations and low yields for some top-down methods.
1-2 · Top-down method · Figs. 1-2
Secondary benchmarks
Every row remains visibly secondary and links to a primary dossier only where the mapping is verified.
| Material | Property | Reported value | Context and quality | Primary evidence | Review source |
|---|---|---|---|---|---|
| Secondary2D-Co-NS MOF nanosheets | thickness | 2 nm | Electrochemical/chemical exfoliation after oxygen evolution reaction Text · Exact Reported | No verified corpus mapping | 2 · Chemical exfoliation method · Fig. 2f-g |
| SecondaryGC/(Co-TCPP(Fe))5 sensing platform | H2O2 detection limit | 0.15 uM | Amperometric H2O2 sensing in PBS at pH 7.4 Text · Exact Reported | No verified corpus mapping | 5 · Amperometric sensor · Fig. 11c-d |
| Secondary[Cu2Br(IN)2]n | monolayer thickness | 5 +/- 0.15 A | AFM height of nanosheets isolated on HOPG after mechanical sonication Text · Exact Reported | No verified corpus mapping | 1 · Physical exfoliation method · Fig. 1d |
| SecondaryCu3(HITP)2 MOF nanosheets | conductivity | 0.2 S cm-1 | Chemiresistive sensor material; pi-conjugated hexagonal 2D MOF Text · Exact Reported | research_0002 | 4-5 · Chemiresistive sensor · Fig. 9 |
| SecondaryCu3(HITP)2 chemiresistive device | NH3 detection limit | 0.5 ppm | NH3 vapour in N2 flow chamber; reversible turn-on response Text · Exact Reported | research_0002 | 5 · Chemiresistive sensor · Fig. 9c |
| SecondaryCu-BHT FET | ambipolar carrier mobility | hole mobility 99 cm2 V-1 s-1; electron mobility 116 cm2 V-1 s-1 | 200-nm-thick Cu-BHT film from highly oriented 2D [Cu3(C6S6)]n nanosheets Text · Exact Reported | research_0006 | 6 · Field-effect transistor |
| SecondaryCu-HAB MOF | electrical conductivity | 11 +/- 3 S m-1 | Conductive ultrathin 2D M-HAB MOF nanosheets Text · Exact Reported | No verified corpus mapping | 4 · Supercapacitor · Fig. 8 |
| SecondaryCu-TCPP MOF nanosheets | thickness | 4.5 +/- 1.2 nm | PVP-assisted surfactant synthesis expanded to M-TCPP family Text · Exact Reported | No verified corpus mapping | 3 · Surfactant-assisted synthetic method |
| SecondaryCuBDC MOF nanosheets | thickness range | 5-25 nm | Three-layer synthesis; SEM and AFM morphology Text · Range | No verified corpus mapping | 3 · Three-layer synthetic method · Fig. 4c-e |
| SecondaryCuS/Cu-TCPP composites | photocurrent density range | 36.6 to 62.0 uA cm-2 | Time-dependent photocurrent at -0.6 V vs Ag/AgCl under AM 1.5G irradiation; increasing CuS content Text · Range | No verified corpus mapping | 6 · Composites of 2D MOF nanosheets for functional electronic devices · Fig. 14f |
| Secondary2D H-MOF-5 nanosheets | additional mesopore size | 6-30 nm | Competitive coordination strategy using lauric acid and PVP Text · Range | No verified corpus mapping | 3 · Competitive coordination strategy |
| SecondaryMn-UMOFNs electrode | cycling capacity | 818 mAh g-1 for 300 cycles at 1 A g-1 | Lithium-ion battery anode; after 300 cycles at 1 A g-1 Text · Exact Reported | No verified corpus mapping | 4 · Battery · Fig. 7f |
| SecondaryN1 bis(dipyrrinato)zinc(II) MOF | single-layer thickness | 1.2 nm | Gas/liquid interfacial synthesis at air/water interface Text · Exact Reported | No verified corpus mapping | 2 · Interfacial synthetic method · Fig. 3e |
| SecondaryNH2-MIL-53(Al) nanosheets | ClO- detection limit | 0.04 uM | Luminescent ClO- detection in water under 335 nm irradiation Text · Exact Reported | No verified corpus mapping | 6 · Luminescent sensor · Fig. 12a-c |
| SecondaryNi3(HITP)2 nanosheets | bulk electronic conductivity | over 5000 S m-1 | Conductive 2D Ni3(HITP)2 physical property cited in supercapacitor discussion Text · Approximate | No verified corpus mapping | 4 · Supercapacitor |
| SecondaryNi3(HITP)2 FET | hole mobility | 48.6 cm2 V-1 s-1 | BG-TC FET with Ni3(HITP)2 films on SiO2/Si wafer Text · Exact Reported | research_0015 | 6 · Field-effect transistor · Fig. 13 |
| SecondaryNi-BHT nanosheets | thickness | 0.6 nm | Gas/liquid interfacial reaction between BHT and Ni(OAc)2 Text · Exact Reported | No verified corpus mapping | 2 · Interfacial synthetic method |
| SecondaryNi-HAB MOF | electrical conductivity | 70 +/- 15 S m-1 | Conductive ultrathin 2D M-HAB MOF nanosheets Text · Exact Reported | No verified corpus mapping | 4 · Supercapacitor · Fig. 8 |
| SecondaryNi-HAB MOF | volumetric capacitance | 760 F cm-3 at 0.2 mV s-1 | Cold pressed isostatically into freestanding additive-free pellets Text · Exact Reported | No verified corpus mapping | 4 · Supercapacitor · Fig. 8i |
| SecondaryNiFe-MOF/NF nanosheets | nanosheet thickness | 3.5 nm | Template-assisted growth on Ni foam; AFM analysis Text · Exact Reported | research_0071 | 3 · Template-assisted synthetic method · Fig. 6e |
| SecondaryZn2(PdTCPP) MOF nanosheets | thickness | 1 nm | Intercalation/chemical exfoliation with 20-fold excess TMP for 10 h Text · Exact Reported | No verified corpus mapping | 2 · Chemical exfoliation method · Fig. 2c |
| SecondaryZn2(PdTCPP) MOF nanosheets | production yield | 57% | 20-fold excess TMP reduction for 10 h Text · Exact Reported | No verified corpus mapping | 2 · Chemical exfoliation method · Fig. 2 |
| SecondaryZn-TCPP MOF nanosheets | thickness | 7.6 +/- 2.6 nm | PVP-assisted solvothermal synthesis; TEM and AFM Text · Exact Reported | No verified corpus mapping | 3 · Surfactant-assisted synthetic method · Fig. 5d |
| SecondaryZr-TCBPE-MOL | fluorescence quantum yield | 50% | Yellow emission under 450 nm excitation for WLED/visible-light communication device Text · Exact Reported | No verified corpus mapping | 6 · White light-emitting diodes |
| SecondaryZSB-1 nanosheets | thickness | 11.8 +/- 2.3 nm | Soft physical exfoliation with wet ball-milling and ultrasonic treatment; AFM height measurement Text · Exact Reported | No verified corpus mapping | 2 · Physical exfoliation method · Fig. 1g |
Research gaps
Open questions are presented as review-author priorities, not conclusions from the primary database.
device mechanism
HighWorking mechanisms for most 2D MOF electronic devices are not yet defined.
Proposed direction: Reveal underlying mechanisms for nanosheet-based electronic devices using targeted measurements and modelling.
7 · Summary and future outlook
new fabrication routes
MediumThe field needs additional routes beyond the surveyed methods for efficient fabrication of ultrathin 2D MOF nanosheets.
Proposed direction: Explore removable inorganic hydroxide nanosheet templates and shape-controlled crystal-structure transformation.
7 · Summary and future outlook
charge transport
HighImproving the conductivity of 2D MOFs remains an important future research topic.
Proposed direction: Optimise metal-linker combinations, conjugation and film assembly to increase electronic conductivity.
7 · Summary and future outlook
electronic-structure prediction
HighAccurate prediction of electronic properties from metal nodes, linkers, guests and nanosheet dimensions remains difficult.
Proposed direction: Use theoretical calculations to guide nanosheet design before device assembly.
7 · Summary and future outlook
translation
Medium2D MOF nanosheet device performance must meet practical criteria for real devices.
Proposed direction: Benchmark against real-device requirements and broaden applications to flexible, memory, anti-counterfeiting and related devices.
7 · Summary and future outlook
surfactant removal
MediumGrowth-control agents should interact weakly with exposed MOF binding sites while remaining easy to wash away.
Proposed direction: Discover surfactants or small molecules with reversible surface binding and low residue risk.
7 · Summary and future outlook
synthesis control
HighReliable synthesis still needs to deliver nanosheets with uniformity, high yield, good dispersion and structural stability.
Proposed direction: Develop better crystal-growth control agents and emerging synthetic methods for adjustable high-quality nanosheets.
7 · Summary and future outlook
Cited-study map
Mappings show which printed review references have a verified counterpart in the frozen primary corpus.
Show 24 cited-study records
| Reference | Study | Role and context | Corpus mapping |
|---|---|---|---|
| Ref. 632010 | Title unavailable | synthesis_strategy · morphology_benchmarkUsed by the review as an early example of ultrasonic exfoliation of a layered MOF to monolayer nanosheets. | Unmapped |
| Ref. 712018 | Title unavailable | synthesis_strategy · morphology_benchmarkSoft physical exfoliation example using wet ball-milling and ultrasonication to preserve ZSB-1 morphology. | Unmapped |
| Ref. 722017 | Title unavailable | synthesis_strategy · morphology_benchmarkIntercalation/chemical exfoliation example producing thin Zn2(PdTCPP) nanosheets in high yield. | Unmapped |
| Ref. 732018 | Title unavailable | synthesis_strategy · morphology_benchmarkElectrochemical/chemical exfoliation example where oxidised pillar ligands are removed to form 2D-Co nanosheets. | Unmapped |
| Ref. 772015 | Title unavailable | synthesis_strategy · morphology_benchmarkInterfacial synthesis example comparing liquid/liquid multilayer N1 and gas/liquid single-layer N1. | Unmapped |
| Ref. 802013 | Title unavailable | synthesis_strategy · material_familyCited as an example of gas/liquid interfacial synthesis of single-layer pi-conjugated Ni-BHT nanosheets. | Unmapped |
| Ref. 832015 | Title unavailable | transport_benchmark · fet_deviceUsed as a high-mobility ambipolar 2D MOF FET example based on Cu-BHT films. | research_0006 |
| Ref. 1022014 | Title unavailable | synthesis_strategy · morphology_benchmarkThree-layer synthesis example for CuBDC nanosheets. | Unmapped |
| Ref. 1042018 | Title unavailable | capacitive_sensor · synthesis_strategyCTAB-assisted NH2-MIL-53(Al) nanosheets used in chemicapacitive sensor devices. | Unmapped |
| Ref. 1062015 | Title unavailable | synthesis_strategy · morphology_benchmarkPVP-assisted high-yield synthesis of well-uniform TCPP-based 2D MOF nanosheets. | Unmapped |
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| Ref. 2002017 | Title unavailable | fet_device · transport_benchmarkNi3(HITP)2 nanofilm FET example with p-type behaviour and reported mobility/on-off metrics. | research_0015 |
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