Primary studyCore evidenceThin Film Device

Orientation Control of a Two-Dimensional Conductive Metal-Organic Framework Thin Film by a Pyridine Vapor-Assisted Dry Process

Chon S., Nakayama R., Iwamoto S. et al. · ACS Applied Materials and Interfaces · 2023 · 56057-56063

1materials
4samples
4synthesis routes
11measurements
28results
6claims and caveats

Evidence map

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Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Phase AssignmentSupport assessment: High

SEM-EDS and SIMS support homogeneous Cu3(HHTP)2 film distribution on and through the substrate-supported film, with negligible Si absorber incorporation.

Caveat: Depth is reported in sputtering time rather than calibrated physical thickness.

p004 · Results and Discussion · Figure 3 · Linked to 3 structured results

Structure Property LinkSupport assessment: High

Pyridine-vapour annealing is critical for crystallisation and orientation control; the as-deposited film shows no noticeable XRD peaks while the annealed film is (001)-oriented.

Caveat: The exact role of moisture in the sealed-air setup is not isolated.

p004 · Results and Discussion · Figure S3 · Linked to 3 structured results

Synthesis MechanismSupport assessment: High

A two-step dry process combining IR-PLD multilayer deposition and pyridine-vapour-assisted annealing fabricates a (001)-oriented Cu3(HHTP)2 thin film on insulating alpha-Al2O3 (001).

Caveat: Final film thickness is not reported; route is demonstrated on small 5 mm x 5 mm substrates.

p001 · Abstract · Figure 4 · Linked to 5 structured results

Synthesis MechanismSupport assessment: Medium

Excess pyridine (5 uL) broadens IR bands and is interpreted as decomposing the local Cu3(HHTP)2 structure by strong coordination to Cu ions.

Caveat: The decomposition assignment is inferred from IR band broadening; no independent chemical quantification is reported for the 5 uL variant.

p003 · Results and Discussion · Figure 2a · Linked to 1 structured result

Transport MechanismSupport assessment: High

The noncrystalline as-deposited Cu3(HHTP)2-like film is also electrically conductive, with table values of 2.6-2.8 x 10^-2 S cm^-1 across the measured current range.

Caveat: Authors suggest this may indicate negligible anisotropy and/or small grain-boundary effects, but do not directly resolve the mechanism.

p005 · Results and Discussion · Table S1 · Linked to 4 structured results

Transport MechanismSupport assessment: High

The oriented Cu3(HHTP)2 thin film is electrically conductive at room temperature with an in-plane conductivity of 2.6 x 10^-2 S cm^-1 from SI Table S1.

Caveat: Main text states 2.7 x 10^-2 S cm^-1 for the (001)-oriented film, whereas SI Table S1 reports 2.6 x 10^-2 S cm^-1 at all listed currents; the table values are extracted as primary numeric results.

p004 · Table S1 · Table S1 · Linked to 5 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
Cu3(HHTP)2 conductive metal-organic frameworkBrowse family: Cu₃(HHTP)₂ / Cu–HHTPCu3(HHTP)2; HHTP = 2,3,6,7,10,11-hexahydroxytriphenyleneCu(II) ions / copper acetate-derived Cu nodes · HHTP (2,3,6,7,10,11-hexahydroxytriphenylene)2D · PristineLayer-structured two-dimensional conductive MOF; pyridine-vapour annealed film is assigned as (001)-oriented with Cu3(HHTP)2 layers parallel to alpha-Al2O3 (001).p001 · Abstract

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 4 sample records
SampleForm and roleProcessing and geometrySource
Cu3(HHTP)2 thin film annealed with 1 uL pyridineresearch_0260__mat__m_cu_hhtpThin Film · Target Sample · Pristine FrameworkPostdeposition annealed with 1 uL pyridine in sealed 7 mL cell at 333 K for 24 h under air-sealed conditions.alpha-Al2O3 (001) · From common as-deposited multilayer; final film thickness not explicitly reported.p002 · Experimental Section · Figure 2
(001)-oriented Cu3(HHTP)2 thin film annealed with 3 uL pyridineresearch_0260__mat__m_cu_hhtpThin Film · Target Sample · Pristine FrameworkPostdeposition annealed with 3 uL pyridine in sealed 7 mL cell at 333 K for 24 h; (001)-oriented crystalline film.alpha-Al2O3 (001) · From common as-deposited multilayer; final film thickness not explicitly reported.p005 · Conclusions · Figures 3-4; Table S1
Cu3(HHTP)2 thin film annealed with 5 uL pyridineresearch_0260__mat__m_cu_hhtpThin Film · Target Sample · Pristine FrameworkPostdeposition annealed with 5 uL pyridine in sealed 7 mL cell at 333 K for 24 h.alpha-Al2O3 (001) · From common as-deposited multilayer; final film thickness not explicitly reported.p003 · Results and Discussion · Figure 2
as-deposited Cu3(HHTP)2-like thin film on alpha-Al2O3 (001)research_0260__mat__m_cu_hhtpThin Film · Pristine Control · Pristine FrameworkAlternating HHTP/Cu(OAc)2 multilayer deposited by IR-PLD; noncrystalline and not oriented before pyridine-vapour annealing.alpha-Al2O3 (001), 5 mm x 5 mm x 0.5 mm · Five IR-PLD cycles of alternating 10 nm HHTP and 8 nm Cu(OAc)2 precursor layers; final film thickness not explicitly reported.p002 · Experimental Section · Figure 1