Primary studyCore evidenceTransport Physics

In-Plane Oriented Two-Dimensional Conjugated Metal-Organic Framework Films for High-Performance Humidity Sensing

Park S., Zhang Z., Qi H. et al. · ACS Materials Letters · 2022 · 1146-1153

4materials
7samples
4synthesis routes
15measurements
52results
6claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

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

HIB-Cu film is assigned as a layered, in-plane oriented, face-on 2D c-MOF with hexagonal pores and pi-pi stacking.

Caveat: Powder/control samples have poorer morphology; assignment applies to the SDS-mediated film.

1148 · Results · Figure 3 · Linked to 5 structured results

Structure Property LinkSupport assessment: High

The in-plane oriented HIB-Cu film sensor responds and recovers much faster than the HIB-Cu powder control because quasi-1D pore channels shorten the gas path length.

Caveat: Transport path-length explanation is a mechanistic interpretation supported by device comparison, not a direct gas-diffusion measurement.

1150 · Results · Figure 5; Figure S16 · Linked to 5 structured results

Synthesis MechanismSupport assessment: High

The surfactant-directed two-step method also yields free-standing HITP-Cu films from HATP and Cu salts.

Caveat: Electrical transport was reported for HIB-Cu films, not HITP-Cu films.

1150 · Results · Figures S12-S14 · Linked to 4 structured results

Synthesis MechanismSupport assessment: High

SDS-mediated preorganisation directs anisotropic in-plane growth, giving crystalline face-on HIB-Cu films with reduced amorphous regions compared with no-SDS controls.

Caveat: Mechanism inferred from intermediate structures, PXRD, SEM/TEM, and control synthesis rather than direct in situ observation.

1149-1150 · Results · Figure 4 · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

Hall measurements indicate p-type semiconducting behaviour in HIB-Cu film, with finite carrier mobility and low conductivity near 0.1 S/m.

Caveat: Hall numerical values are read from a figure annotation rather than extracted text; conductivity is two-point and may include contact effects.

20, 25 · Supporting Figures · Figures S15 and S18 · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

HIB-Cu sensing is selective toward hydroxyl-containing molecules, and Raman data suggest water interaction alters the organic linker rather than the Cu-N metal site.

Caveat: Selectivity was tested only against cyclohexane and ethanol in the reported controls.

1151 · Results · Figures 5e; S17 · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
HAB-Cucationic HAB-Cu coordination intermediate with Cu(II)/Cu(I), C-NH2 and C-NH+ linkagesCu(II)/Cu(I) mixed centres · HAB2D · Model SystemLayered preorganised intermediate; columnar without SDS and platelet-like with SDS mediation.1149 · Results · Figure 4
HAB-Cu/SDSHAB-Cu coordination intermediate coassembled with sodium dodecyl sulfateCu coordination centres in HAB-Cu · HAB plus SDS surfactant assembly2D · CompositeLamellar surfactant-mediated coassembly with expanded interlayer distance.1149 · Results · Figure 4c-e
HIB-CuCu-bis(diimino)-linked hexaaminobenzene/hexaiminobenzene 2D c-MOF; C:N:Cu ca. 4:4:1Cu square-planar bis(diimino) linkages; Cu(II) dominates in final film · hexaaminobenzene (HAB) oxidised to hexaiminobenzene-type linkages2D · PristineLayered face-on 2D hexagonal c-MOF with pi-pi stacking and quasi-1D nanopore channels.1146-1148 · Abstract and Results · Figures 1-3
HITP-CuCu-bis(diimino)-linked hexaaminotriphenylene 2D c-MOFCu(II)-derived copper-bis(diimino) linkages · 2,3,6,7,10,11-hexaaminotriphenylene (HATP)2D · PristineLayered polycrystalline in-plane-ordered 2D c-MOF film.1150 · Results · Figures 1c; S12-S14

Sample register

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

Show 7 sample records
SampleForm and roleProcessing and geometrySource
HAB-Cu intermediate without SDSresearch_0112__mat__mat_hab_cu_intermediatePowder · Model System · Modelair-free grey precipitate5 · Synthetic Procedures
HAB-Cu/SDS intermediateresearch_0112__mat__mat_hab_cu_sds_intermediatePowder · Model System · Compositeair-free light grey precipitate containing SDS5 · Synthetic Procedures
free-standing in-plane oriented HIB-Cu filmresearch_0112__mat__mat_hib_cuThin Film · Target Sample · Pristine Frameworkfree-standing film formed at air/water interface and vertically transferredwater surface as formed; transferred to Si/SiO2, Si, quartz, TEM grid, gold plate, or device substrate as needed · tunable 50-340 nm; sensor device used 50 nm; conductivity devices used 54 and 120 nm films1147-1150 · Results · Figures 2, 3, 5
bulk powder form HIB-Cu sensor deviceresearch_0112__mat__mat_hib_cuPowder · Pristine Control · Pristine Frameworkbulk powder drop-cast for sensor comparisondrop-cast sensor electrode pattern20, 23 · Supporting Tables and Figures · Table S1; Figure S16
HIB-Cu film chemiresistive humidity sensorresearch_0112__mat__mat_hib_cuElectrode · Target Sample · Pristine Frameworkfilm transferred by vertical deposition; Au electrodes deposited; tested under 1 VSi/SiO2 substrate with thermally evaporated Au electrodes · 50 nm HIB-Cu film; 70 nm Au top contacts1150 · Results · Figure 5
HIB-Cu film made without SDSresearch_0112__mat__mat_hib_cuThin Film · Pristine Control · Pristine Frameworkcontrast synthesis without SDS surfactantTEM support / air-water interface experiment1149 · Results · Figures S6-S7
free-standing HITP-Cu filmresearch_0112__mat__mat_hitp_cuThin Film · Target Sample · Pristine Frameworkfree-standing film formed at air/water interface and vertically transferredwater surface as formed; transferred to Si/SiO2, TEM grid, or quartz substrate · approximately 8 nm1150 · Results · Figures S12-S14