Review · secondary evidenceProgress Report

Research progress on multivariate two-dimensional conjugated metal-organic frameworks 多组分二维共轭金属有机骨架的研究进展

HUO Ran, ZHANG Zhaohui, SU Xi et al. · Chinese Journal of Inorganic Chemistry · 2024

This dossier represents secondary evidence: section summaries, claims and benchmarks are paraphrased for this database, not quoted. Check quantitative values against the linked primary study, and cite the review itself (10.11862/cjic.20240195) for its arguments.

6review sections
9material families
17review claims
15secondary benchmarks
15cited studies
7research gaps

Review scope

Mini-review of recent multivariate two-dimensional conjugated MOFs constructed from multiple ligands or multiple metal nodes, with emphasis on design strategies, transport-related structure-property effects, electrocatalysis, energy storage and sensing.

Coverage
2010–2024
Category
Review Transport Physics
Material scope
Multivariate 2D conjugated metal-organic frameworks · Two-component 2D c-MOF comparators · Hetero-organic ligand 2D c-MOFs · Heterometallic and bimetallic 2D c-MOFs · Conductive catecholate, imine, amine, thiolate, phthalocyanine and porphyrin frameworks
Transport scope
Metal-ligand orbital hybridisation and pi-d conjugation · In-plane through-bond pathways · Interlayer through-space transport · Conductivity modulation by ligand symmetry, linker mixing, metal identity and metal ratio · Chemiresistive response and electrochemical charge-transfer context
Application scope
Electrocatalytic CO2 reduction · Hydrogen evolution · Oxygen reduction · Electrochemical energy storage · Chemiresistive and electrochemical sensing
Explicit exclusions
Detailed experimental recipes · Exhaustive bibliography of all 2D c-MOF papers · Primary-data replacement for individual cited studies
Source
2063 · Abstract
Evidence role
Context, taxonomy and secondary benchmarking

Section map

The review’s argument is preserved as a navigable set of section summaries.

2.1 Hetero-organic ligand strategy

2067-2069

Covers mixed-linker strategies: C3-symmetric hydroxyl ligands, mixed coordination motifs and solid-solution linkers that tune conductivity, porosity, sensing and HER activity.

Relevance: Core · 2067-2068 · 2.1 Hetero-organic ligand strategy

2.2 Heterometal strategy

2069-2072

Covers heterometal and bimetal strategies, including metal-ratio alloys, postsynthetic heterodimetal sites and phthalocyanine/porphyrin architectures that influence carrier concentration, bandgap, conductivity and electrocatalytic selectivity.

Relevance: Core · 2069 · 2.2 Heterometal strategy

0 Introduction

2063-2064

Defines 2D c-MOFs, introduces pi-d conjugated networks and motivates multivariate ligand/metal incorporation as a way to tune carrier transport and physicochemical properties.

Relevance: Core · 2063-2064 · 0 Introduction

3 Summary and outlook

2072

Summarises synergistic amplification in MTV 2D c-MOFs and lists major gaps: poor crystallinity, single-crystal need, powder device integration, defective films, stability and metal-linker matching.

Relevance: Core · 2072 · 3 Summary and outlook

2 Three-component 2D c-MOFs

2067

Introduces three-component MTV 2D c-MOFs as frameworks that incorporate multiple metals or ligands while often preserving the MOF backbone, but flags synthesis of well-defined structures as challenging.

Relevance: Core · 2067 · 2 Three-component 2D c-MOFs

1 Two-component 2D c-MOFs

2064-2067

Reviews conventional two-component 2D c-MOFs and uses ligand geometry, metal identity and redox-active centres to explain differences in morphology, pores, conductivity, electrochemistry and charge transport.

Relevance: Core · 2065 · 1 Two-component 2D c-MOFs

Taxonomies

Classification systems are attributed to this review and are not treated as a global material registry.

Framework CompositionAuthor-proposed

Component-count topology

The review contrasts conventional metal-plus-ligand 2D c-MOFs with multivariate three-component systems that add either a second organic ligand or a second metal node.

Categories: Two-component 2D c-MOFs · Three-component MTV 2D c-MOFs

2064 · 0 Introduction · Fig. 1

How Metal Centres Are Introduced And PositionedAuthor-proposed

Heterometal arrangement control

The review distinguishes metal-ratio tuning from architectures such as metallophthalocyanine and metalloporphyrin frameworks that impose clearer metal-centre arrangements.

Categories: Statistical metal-ratio alloys · Postsynthetic heterodimetal dual sites · Ligand-defined exact metal-centre arrangements

2071 · 2.2 Heterometal strategy

Identity Of The Added Framework ComponentAuthor-proposed

Three-component construction strategies

Three-component MTV 2D c-MOFs are organised into one-metal/multiple-ligand frameworks and one-ligand/multiple-metal frameworks.

Categories: Hetero-organic ligand strategy · Heterometal strategy

2067 · 2 Three-component 2D c-MOFs

Structural Variable Controlling Charge TransportAuthor-proposed

Two-component molecular design levers

For two-component 2D c-MOFs the review frames charge transport as chemically tunable by ligand, linkage, stacking and metal-centre choices.

Categories: Ligand geometry and substituent count · Linkage type · Interlayer stacking and arrangement · Metal identity and valence

2065 · 1 Two-component 2D c-MOFs

Material families

Review-defined families retain their representative materials and conduction descriptions.

Contorted HBC copper-catecholate 2D c-MOFs

2D C-MOF

Two-component copper catecholate frameworks built from c-HBC ligands with different symmetry and catechol coordination counts.

Conduction: More metal coordination centres and continuous pi stacking shorten charge-transport paths and improve conductivity.

Representative materials: c-HBC-6O-Cu · c-HBC-8O-Cu · c-HBC-12O-Cu

Nodes / linkers: Cu · catechol-functionalised hexabenzocoronene

2065 · 1 Two-component 2D c-MOFs

Hexaaminobenzene HAB conductive 2D MOFs

2D Conductive MOF

HAB-derived conductive MOFs with Cu or Ni nodes and redox-active ligand charge storage.

Conduction: Reversible ligand redox contributes pseudocapacitance; postsynthetic Cu/Sn sites modify electrocatalytic selectivity.

Representative materials: Cu-HAB · Ni-HAB · CuSn-HAB

Nodes / linkers: Cu · Ni · Sn · hexaminobenzene · amine-linked conjugated ligands

2066 · 1 Two-component 2D c-MOFs

Co/Ni HHTP or CAT bimetallic 2D c-MOFs

2D C-MOF

Bimetallic catecholate/HHTP frameworks where Co/Ni ratio changes ORR behaviour and porosity.

Conduction: Balances active Co centres, carrier transport efficiency and ORR pathways.

Representative materials: Co0.27Ni0.73-HHTP · Co-HHTP · Ni-HHTP · M3HITP2 Ni/Co series

Nodes / linkers: Co · Ni · HHTP · catecholate/HITP-related ligands

2070 · 2.2 Heterometal strategy

Mixed HHTP/THQ copper dual-ligand frameworks

2D C-MOF / Porous Coordination Polymer

Hetero-organic ligand Cu framework combining HHTP and THQ linkers.

Conduction: Conductivity is interpreted through changed through-bond and through-space pathways and a lowered baseline useful for chemiresistive sensing.

Representative materials: Cu3(HHTP)(THQ) · Cu3(HHTP)2 · Cu3(THQ)2

Nodes / linkers: Cu · HHTP · tetrahydroxybenzoquinone

2067-2068 · 2.1 Hetero-organic ligand strategy

Tricycloquinazoline HHTQ 2D c-MOFs

2D C-MOF

Nitrogen-rich HHTQ frameworks where Cu or Ni coordination creates MO4 sites in a 2D lattice.

Conduction: Presented mainly through electrocatalytic charge-transfer dependence on metal centres and organic linkers.

Representative materials: Cu3(HHTQ)2 · Ni3(HHTQ)2

Nodes / linkers: Cu · Ni · tricycloquinazoline · nitrogen-rich conjugated ligands

2066 · 1 Two-component 2D c-MOFs

HITP heterometallic conductive MOF alloys

2D Conductive MOF

M3(HITP)2 and mixed-metal (MxM'3-x)(HITP)2 alloys with Co, Ni and Cu nodes.

Conduction: Metal ratio tunes conductivity over four orders of magnitude while preserving isostructural frameworks.

Representative materials: Ni3(HITP)2 · Co3(HITP)2 · Cu3(HITP)2 · (Co2.47Cu0.53)(HITP)2

Nodes / linkers: Co · Ni · Cu · hexaiminotriphenylene

2069-2070 · 2.2 Heterometal strategy

Phthalocyanine-derived bimetallic PcM-O8-M1 frameworks

2D C-MOF

Layered conjugated frameworks connecting Cu/Zn phthalocyanine ligands through distinct secondary metal coordination centres.

Conduction: Separates CO2RR catalytic and proton/electron-transfer functions between ZnO4 and CuN4 units.

Representative materials: PcCu-O8-Zn · PcZn-O8-Cu · PcCu-O8-Cu · PcZn-O8-Zn

Nodes / linkers: Cu · Zn · metallophthalocyanine

2071-2072 · 2.2 Heterometal strategy

Porphyrinic TCPP(Ni)-Co bimetallic 2D c-MOFs

2D C-MOF

Bimetal framework combining Ni porphyrin cores with Co coordination centres for electrochemical sensing.

Conduction: NiN4 creates an electron-deficient ligand environment and higher-valence Co-COO centres, improving detection response.

Representative materials: TCPP(Ni)-Co · TCPP-Co · TCPP-Ni

Nodes / linkers: Ni · Co · tetracarboxyphenylporphyrin

2072 · 2.2 Heterometal strategy

THTA-Co dithiolene-diamine 2D MOFs

2D MOF

Dual-ligand cobalt framework formed from thiol and amine triphenylene ligands to create CoS2N2 coordination centres.

Conduction: Discussed in terms of coordination-centre electronic structure improving HER adsorption/desorption kinetics.

Representative materials: THTA-Co · THA-Co · THT-Co

Nodes / linkers: Co · hexathiol triphenylene · hexaamino triphenylene

2068-2069 · 2.1 Hetero-organic ligand strategy

Synthesis strategies

Review-level synthesis principles remain separate from primary-study recipes.

Dual C3-symmetric hydroxyl ligand coordination

Combine two compatible hydroxylated C3 ligands with Cu2+ to form a hetero-organic 2D framework.

Claimed effects: Modulates conductivity and porosity via through-bond and through-space pathway changes.

Controlling variables: ligand compatibility · ligand redox activity · Cu coordination · stacking geometry

Representative materials: Cu3(HHTP)(THQ)

Caveat: The review notes broader control of intended 2D c-MOF structure remains challenging.

2067 · 2.1 Hetero-organic ligand strategy

Heterometal metal-ratio alloying

Tune the ratio of two metals in an isostructural 2D c-MOF alloy.

Claimed effects: Changes carrier concentration, bandgap and conductivity; can tune ORR activity/selectivity.

Controlling variables: metal identity · metal ratio · isostructural retention · d-p orbital matching

Representative materials: (MxM'3-x)(HITP)2 · Ni/Co HITP2 series

Caveat: Metal-ratio tuning may change properties without precisely ordering metal sites.

2069-2071 · 2.2 Heterometal strategy

Ligand-defined exact bimetal arrangements

Use metallophthalocyanine or metalloporphyrin ligands whose internal metal centres combine with secondary coordination nodes.

Claimed effects: Addresses random metal distribution and separates catalytic and charge-transfer functions.

Controlling variables: macrocyclic metal · secondary metal node · coordination functional groups · metal-centre placement

Representative materials: PcM-O8-M1 · TCPP(Ni)-Co

Caveat: The review treats this as a solution to metal-arrangement control, but still lists structure determination as a broader challenge.

2071 · 2.2 Heterometal strategy

Mixed donor ligand coordination centres

Simultaneously coordinate thiol and amine triphenylene ligands to one metal to create a mixed donor CoS2N2 site.

Claimed effects: Creates HER-active coordination environments with improved hydrogen adsorption/desorption kinetics.

Controlling variables: thiol ligand · amine ligand · metal donor environment · graphene composite context

Representative materials: THTA-Co

Caveat: The review discusses catalytic performance, not a general conductivity benchmark.

2068 · 2.1 Hetero-organic ligand strategy

Controlled multivariate linker ratios

Introduce multiple functionalised organic linkers of similar length into one framework and control their ratios during synthesis.

Claimed effects: Produces non-segregated multivariate frameworks and can create synergistic adsorption or property changes.

Controlling variables: linker identity · linker ratio · functional group distribution

Representative materials: MTV-MOF-5 derivatives

Caveat: Presented as historical MTV-MOF precedent rather than specific 2D c-MOF recipe.

2064 · 0 Introduction

Postsynthetic heterodimetal dual-site installation

Modify a parent framework after synthesis to create asymmetric heteronuclear dual metal sites.

Claimed effects: Introduces tandem catalytic sites for asymmetric C-C coupling and multicarbon CO2RR product selectivity.

Controlling variables: postsynthetic metal insertion · dual-site asymmetry · bridging atom environment

Representative materials: CuSn-HAB

Caveat: Extracted as a design concept; detailed postsynthetic conditions are not captured.

2070-2071 · 2.2 Heterometal strategy

Conductive MOF linker solid solutions

Use a solid-solution approach to vary the fraction of two linkers within the framework rather than physically mixing end-member MOFs.

Claimed effects: Increasing HAB ratio raises conductivity by more than three orders of magnitude, unlike physical mixtures.

Controlling variables: HAB fraction · TATHB fraction · solid-solution formation

Representative materials: Cu3(HAB)x(TATHB)2-x

Caveat: Evidence is secondary and specific to the cited solid-solution system.

2068 · 2.1 Hetero-organic ligand strategy

Review claims

These are the review authors’ synthesis, not newly measured results.

Author InterpretationHigh supportApplication Relevance

Asymmetric Sn-Cu dual sites in CuSn-HAB are interpreted as tandem catalytic sites that promote asymmetric C-C coupling and multicarbon CO2RR selectivity.

Evidence basis: single_reference

Caveat: Secondary interpretation of the cited CO2RR study.

2071 · 2.2 Heterometal strategy

DescriptiveHigh supportDefinition Scope

2D c-MOFs are 2D materials assembled from multidentate ortho-functionalised conjugated ligands and transition-metal ions into atomically ordered, graphene-like planar networks.

Evidence basis: review_reasoning

Caveat: Definition is the review's framing, not a universal standardisation statement.

2063 · 0 Introduction

Author InterpretationMedium supportMeasurement Interpretation

The review attributes improved low-concentration NH3 sensitivity in Cu3(HHTP)(THQ) thick films to a lowered conductivity baseline, which makes small adsorption-induced charge transfers more visible.

Evidence basis: single_reference

Caveat: Chemiresistive interpretation is secondary and device-geometry dependent.

2068 · 2.1 Hetero-organic ligand strategy

Author InterpretationHigh supportTransport Mechanism

Mixed HHTP/THQ linkers tune conductivity and porosity by altering intramolecular through-bond pathways and interlayer through-space transport.

Evidence basis: single_reference

Caveat: Transport mechanism is the review's interpretation of the cited chemiresistor study.

2067-2068 · 2.1 Hetero-organic ligand strategy

Author InterpretationHigh supportSynthesis Strategy

Metallophthalocyanine and metalloporphyrin linkers can help solve random metal-centre distribution by using ligand-internal metal centres plus secondary coordination sites to build more definite bimetal arrangements.

Evidence basis: multi_reference

Caveat: The broader review still calls exact structure determination difficult for MTV 2D c-MOFs.

2071 · 2.2 Heterometal strategy

Author InterpretationHigh supportStructure Property Link

For HAB-derived conductive MOFs, reversible ligand redox reactions are interpreted as the main charge-storage mechanism in the highly conjugated system.

Evidence basis: single_reference

Caveat: Specific to HAB-MOF electrodes under the cited alkaline electrochemical conditions.

2066 · 1 Two-component 2D c-MOFs

Consensus SummaryHigh supportStructure Property Link

Different transition-metal d orbitals and pi-conjugated ligand energy matching produce different hybridisation, which can tune carrier delocalisation in the 2D plane and thereby affect conductivity and electrochemical activity.

Evidence basis: review_reasoning

Caveat: A general design principle; individual materials require primary evidence.

2069 · 2.2 Heterometal strategy

DescriptiveHigh supportApplication Relevance

In HHTQ 2D c-MOFs, CO2RR performance depends strongly on the metal coordination centre and nitrogen-rich linker, with Cu3(HHTQ)2 showing superior methanol selectivity over Ni and HHTP comparators.

Evidence basis: single_reference

Caveat: Benchmark remains secondary and should be checked against the primary paper before numerical reuse.

2066 · 1 Two-component 2D c-MOFs

Author InterpretationHigh supportStructure Property Link

Ni/Co HITP-series examples show a trade-off: increasing Co can disorder structure and reduce carrier transport but improve ORR activity through more active Co centres.

Evidence basis: single_reference

Caveat: Applies to the cited Ni/Co coordination-polymer series.

2070 · 2.2 Heterometal strategy

Author InterpretationHigh supportStructure Property Link

Changing the symmetry and coordination number of catechol-functionalised HBC ligands changes metal-centre density and pi stacking, shortening transport paths and raising conductivity.

Evidence basis: single_reference

Caveat: Secondary interpretation of one cited material family.

2065 · 1 Two-component 2D c-MOFs

Author InterpretationHigh supportStructure Property Link

Introducing multiple ligands or metals into one 2D c-MOF can change electronic delocalisation, create better transport channels, overcome single-linker redox limitations and enhance metal-ligand synergy.

Evidence basis: multi_reference

Caveat: The review emphasises potential advantages and later notes structure-control and stability barriers.

2064 · 0 Introduction

Consensus SummaryHigh supportTransport Mechanism

Metal-ligand orbital hybridisation forms pi-d conjugated extended networks, promoting strong in-plane conjugation and weaker interlayer pi-pi stacking that support carrier transport.

Evidence basis: review_reasoning

Caveat: The review gives a general mechanistic statement without resolving material-specific transport models.

2064 · 0 Introduction

Author InterpretationHigh supportMaterial Comparison

Solid-solution dual-linker MOFs show systematic conductivity increases with HAB fraction, whereas physical mixtures of the end members do not, supporting framework-level rather than mixture-level property control.

Evidence basis: single_reference

Caveat: Specific to Cu3(HAB)x(TATHB)2-x in the review.

2068 · 2.1 Hetero-organic ligand strategy

Author InterpretationHigh supportConsensus

The review concludes that MTV 2D c-MOFs often produce synergistic amplification unavailable in corresponding single-component materials, improving conductivity, porosity, electrocatalysis, energy storage and sensing.

Evidence basis: review_reasoning

Caveat: This is the review's synthesis of selected literature, not proof that every MTV 2D c-MOF outperforms its comparators.

2072 · 3 Summary and outlook

Author InterpretationHigh supportCaveat

Three-component MTV 2D c-MOFs can introduce multiple metals or ligands without changing the backbone, but constructing well-defined structures remains a major challenge because ligand coordination and metal-centre compatibility must be controlled.

Evidence basis: review_reasoning

Caveat: The statement is a review-level caveat rather than a quantified failure rate.

2067 · 2 Three-component 2D c-MOFs

Consensus SummaryHigh supportCaveat

Two-component 2D c-MOF charge transport and custom function remain constrained by intrinsic chemical structure, including ligand geometry, linkage, stacking and metal centre choices.

Evidence basis: review_reasoning

Caveat: This is a review-level synthesis across examples rather than one benchmark.

2065 · 1 Two-component 2D c-MOFs

Author InterpretationMedium supportCaveat

The influence of different metal valence states on 2D c-MOF properties has not been systematically studied because valence-state control is lacking.

Evidence basis: multi_reference

Caveat: The cited mixed-valence example is a 3D MOF context; the gap is projected onto 2D c-MOFs by the review.

2065 · 1 Two-component 2D c-MOFs

Secondary benchmarks

Every row remains visibly secondary and links to a primary dossier only where the mapping is verified.

MaterialPropertyReported valueContext and qualityPrimary evidenceReview source
SecondaryCo0.27Ni0.73-HHTPORR cathodic peak potential0.41 V vs RHEORR; compared with Co-HHTP 0.37 V and Ni-HHTP 0.42 V
Text · Exact Reported
No verified corpus mapping2070 · 2.2 Heterometal strategy
SecondaryCuSn-HABethanol Faradaic efficiency56% at -0.57 V vs RHECO2RR to ethanol; compared with Cu-HAB 26% at -0.67 V vs RHE
Text · Exact Reported
No verified corpus mapping2070-2071 · 2.2 Heterometal strategy
SecondaryNi-HAB and Cu-HABspecific capacitanceNi-HAB 420 F·g-1; Cu-HAB 215 F·g-11 mol·L-1 KOH aqueous electrolyte
Text · Exact Reported
No verified corpus mapping2066 · 1 Two-component 2D c-MOFs · Fig. 4
SecondaryCu3(HAB)x(TATHB)2-xconductivity tuning range4.2×10-8 to 2.9×10-5 S·cm-1conductivity increases with HAB ratio
Text · Range
research_04412068 · 2.1 Hetero-organic ligand strategy
SecondaryNi-HABcapacitance retention90% after 12 000 galvanostatic charge-discharge cycles at 10 A·g-110 A·g-1 current density; 12 000 cycles
Text · Exact Reported
No verified corpus mapping2066 · 1 Two-component 2D c-MOFs · Fig. 4
Secondaryc-HBC-12O-Curoom-temperature conductivity3.31 S·m-1room temperature; two-component c-MOF family comparison
Text · Exact Reported
research_00132065 · 1 Two-component 2D c-MOFs · Fig. 2
SecondaryCu3(HHTP)(THQ) nanowire thick-film sensorNH3 response/recovery timeresponse 1.65 min; recovery 2.57 min for 10 mg·L-1 NH3room temperature; 10 mg·L-1 NH3
Text · Exact Reported
research_07932068 · 2.1 Hetero-organic ligand strategy · Fig. 5
SecondaryCu3(HHTP)(THQ)conductivityabout 2.53×10-5 S·cm-1mixed-ligand conductive MOF; review states conductivity increases with temperature
Text · Approximate
research_07932067 · 2.1 Hetero-organic ligand strategy · Fig. 5
SecondaryNi3(HHTQ)2 and Cu3(HHTP)2CH3OH Faradaic efficiency comparators0.54% for Ni3(HHTQ)2; 0.15% for Cu3(HHTP)2CO2RR methanol selectivity comparators in Fig. 3 discussion
Text · Exact Reported
No verified corpus mapping2066 · 1 Two-component 2D c-MOFs · Fig. 3
SecondaryCu3(HHTQ)2CH3OH Faradaic efficiency53.6% at -0.4 VCO2RR to methanol; potential -0.4 V
Text · Exact Reported
No verified corpus mapping2066 · 1 Two-component 2D c-MOFs · Fig. 3
Secondary(MxM'3-x)(HITP)2 alloysconductivity tuning range5.8×10-3 S·cm-1 to 55.4 S·cm-1from (Co2.47Cu0.53)(HITP)2 to Ni3(HITP)2
Text · Range
research_00412069-2070 · 2.2 Heterometal strategy · Fig. 7
SecondaryNi3HITP2 to Co3HITP2 seriesORR half-wave potentials0.66, 0.72, 0.75, 0.78 and 0.80 V0.1 mol·L-1 KOH linear sweep voltammetry; increasing Co content
Text · Exact Reported
No verified corpus mapping2070 · 2.2 Heterometal strategy · Fig. 7
SecondaryPcCu-O8-Zn/CNTCO2-to-CO selectivity and TOF88% CO Faradaic efficiency at -0.7 V vs RHE; turnover frequency 0.39 s-1; durability >10 hCO2RR on CNT composite
Text · Exact Reported
No verified corpus mapping2072 · 2.2 Heterometal strategy · Fig. 8
SecondaryTCPP(Ni)-Cotheophylline detection performanceresponse time <3 s; detection range 10-100 nmol·L-1; detection limit about 3.3 nmol·L-1electrochemical sensing of trace theophylline
Text · Exact Reported
No verified corpus mapping2072 · 2.2 Heterometal strategy · Fig. 8
SecondaryTHTA-Co/GHER overpotential and Tafel slope335 mV at 10 mA·cm-2; Tafel slope 93 mV·dec-1HER, 0.5 mol·L-1 H2SO4 in figure caption; graphene composite
Text · Exact Reported
No verified corpus mapping2068-2069 · 2.1 Hetero-organic ligand strategy · Fig. 6

Research gaps

Open questions are presented as review-author priorities, not conclusions from the primary database.

Cross-field application development

Medium

Major breakthroughs in electronic, sensing and energy applications require complementary research across fields.

Proposed direction: Broaden interdisciplinary work to expand the application range of MTV 2D c-MOFs.

2072 · 3 Summary and outlook

Thin-film charge transport

High

Reported MTV 2D c-MOF films often consist of small nanoparticles with serious defects and grain boundaries that lower intrinsic carrier transport.

Proposed direction: Reduce defects and grain boundaries in film growth protocols for transport-relevant device performance.

2072 · 3 Summary and outlook

Device integration

High

Powder forms are difficult to integrate into devices, limiting practical applications.

Proposed direction: Optimise controlled synthesis of smooth, large-area, highly oriented 2D MOF films.

2072 · 3 Summary and outlook

Structure determination

High

Most MTV 2D c-MOFs are low-crystallinity irregular polycrystalline powders, making precise framework characterisation difficult.

Proposed direction: Synthesis of high-quality MTV 2D c-MOF single crystals and more rigorous structural characterisation beyond PXRD matching.

2072 · 3 Summary and outlook

Metal-linker compatibility

Medium

It remains difficult to identify ideal matching between metal ions and organic ligands.

Proposed direction: Deepen understanding of organic ligand and metal ion properties to guide compatibility and framework design.

2072 · 3 Summary and outlook

Stacking and pore-channel information

High

Comparing PXRD patterns with simulated structures alone is insufficient to resolve stacking modes and pore-channel details.

Proposed direction: Develop structural methods that directly determine stacking and pore channels in multivariate 2D c-MOFs.

2072 · 3 Summary and outlook

Chemical stability

Medium

MTV 2D c-MOFs are often insufficiently stable under water, acid and alkali conditions.

Proposed direction: Develop and synthesise more stable MTV 2D c-MOFs for harsh operating environments.

2072 · 3 Summary and outlook

Cited-study map

Mappings show which printed review references have a verified counterpart in the frozen primary corpus.

Show 15 cited-study records
ReferenceStudyRole and contextCorpus mapping
Ref. 52010Multiple functional groups of varying ratios in metal-organic frameworkshistorical_framing · multivariate_mof_conceptHistorical origin of the MTV-MOF concept used to frame multicomponent 2D c-MOF design.Unmapped
Ref. 142023Conjugated nonplanar copper-catecholate conductive metal-organic frameworks via contorted hexabenzocoronene ligands for electrical conductiontransport_benchmark · ligand_geometryUsed as a two-component example where ligand symmetry and coordination number modulate charge-transport paths.research_0013
Ref. 172018Charge delocalization and bulk electronic conductivity in the mixed-valence metal-organic framework Fe(1,2,3-triazolate)2(BF4)xtransport_mechanism · mixed_valence_contextCited to support the broader claim that metal valence state can strongly affect MOF conductivity.Unmapped
Ref. 232021Tricycloquinazoline-based 2D conductive metal-organic frameworks promising electrocatalysts for CO2 reductionelectrocatalysis_benchmark · metal_ligand_synergyExample where metal centre and nitrogen-rich linker selection controls CO2RR selectivity to methanol.Unmapped
Ref. 242018Robust and conductive two-dimensional metal-organic frameworks with exceptionally high volumetric and areal capacitanceenergy_storage_benchmark · redox_ligandHAB-derived conductive MOFs used to illustrate metal-dependent capacitance and redox charge storage.Unmapped
Ref. 252020A dual-ligand porous coordination polymer chemiresistor with modulated conductivity and porositydual_ligand_strategy · sensor_benchmarkKey hetero-organic ligand example connecting mixed linkers to modulated conductivity, porosity and NH3 sensing.research_0793
Ref. 292023Linker-based bandgap tuning in conductive MOF solid solutionsdual_ligand_strategy · transport_benchmarkSolid-solution dual-linker example showing conductivity changes not reproduced by physical mixtures.research_0441
Ref. 302017Immobilizing molecular metal dithiolene-diamine complexes on 2D metal-organic frameworks for electrocatalytic H2 productiondual_ligand_strategy · her_benchmarkMixed dithiolene-diamine coordination example used to argue that dual organic linkers can create more active HER coordination centres.Unmapped
Ref. 312023Multicomponent metal-organic frameworksmulticomponent_context · consensusCited for the general assertion that ordered complex coordination coupling can unlock functions inaccessible to single-component materials.Unmapped
Ref. 342020Continuous electrical conductivity variation in M3(hexaiminotriphenylene)2 (M=Co, Ni, Cu) MOF alloysheterometal_strategy · transport_benchmarkKey heterometal alloy example where metal ratio continuously tunes conductivity over multiple orders of magnitude.research_0041
Ref. 352020Unpaired 3d electrons on atomically dispersed cobalt centres in coordination polymers regulate both oxygen reduction reaction (ORR) activity and selectivity for use in zinc-air batteriesorr_benchmark · heterometal_strategyUsed to show a conductivity-activity trade-off: cobalt content decreases carrier transport efficiency but improves ORR selectivity/activity.Unmapped
Ref. 362019Synthesis of bimetallic conductive 2D metal-organic framework (CoxNiy-CAT) and its mass production: Enhanced electrochemical oxygen reduction activityorr_benchmark · bimetal_synergyBimetal HHTP example used to show a composition that combines advantages of Co-HHTP and Ni-HHTP for ORR.Unmapped
Ref. 372023Highly efficient electroreduction of CO2 to ethanol via asymmetric C-C coupling by a metal-organic framework with heterodimetal dual sitesco2rr_benchmark · heterodimetal_dual_sitePostsynthetic heterodimetal dual-site example where Sn/Cu sites promote asymmetric C-C coupling to ethanol.Unmapped
Ref. 382020Synergistic electroreduction of carbon dioxide to carbon monoxide on bimetallic layered conjugated metal-organic frameworksco2rr_benchmark · metal_arrangement_strategyPhthalocyanine-derived exact bimetal arrangement example separating ZnO4 catalytic centres and CuN4 charge-transfer units.Unmapped
Ref. 392022Bimetallic synergy boost TCPP(Ni)-Co MOF as the high-performance electrochemical sensor for enhanced detection of trace theophyllinesensor_benchmark · bimetal_synergyPorphyrin bimetal 2D c-MOF example where NiN4/Co-COO synergy improves electrochemical sensing.Unmapped