Stodolka M., Choi J.Y., Flood J. et al. · ACS Applied Nano Materials · 2022 · 2156-2162
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
Fe-HHTP shows stronger redox activity and higher capacitance than Cu-HHTP and Ni-HHTP analogues.
Caveat: Electrochemical measurements use composite electrodes containing carbon black and PTFE binder.
main p.5 · Results and Discussion · Figure 6; Table S2 · Linked to 5 structured results
Fe-HHTP is a 2D electrically conductive HHTP MOF rather than a previously reported Fe-based 3D MOF.
main p.2 · Results and Discussion · Figure 2 · Linked to 4 structured results
Axial DMF coordination at octahedral Fe nodes enlarges interlayer spacing and shapes the two-layer Fe-HHTP structure.
main p.2 · Results and Discussion · Figure 2c; Figure S8 · Linked to 3 structured results
Fe-HHTP contains mixed-valent Fe(II)/Fe(III), with Fe(II) dominant, enabling redox activity.
Caveat: EPR high-spin Fe(III) signal is weak and overlapping contributions cannot be ruled out.
main p.4 · Results and Discussion · Figure 5 · Linked to 4 structured results
The expanded stacking distance and higher BET surface area improve accessibility to interior pores of Fe-HHTP.
Caveat: The link between ECSA and pore accessibility is an interpretation from capacitance/ECSA trends rather than direct ion-transport quantification.
main p.5 · Results and Discussion · Figure 6; Table S2 · Linked to 4 structured results
Fe-HHTP synthesis is highly sensitive to dissolved oxygen, primarily because redox-active Fe is oxygen-sensitive during synthesis.
Caveat: Based on PXRD optimisation experiments in Figures S2, S6 and S7; no numeric crystallinity index extracted.
main p.2 · Results and Discussion · Figures S2, S6, S7
Fe-HHTP behaves as a semiconducting material with thermally activated conduction.
Caveat: Temperature-dependent conductivity endpoints from Figure S11 are visual estimates; activation energy and band gap are text-reported.
main p.4 · Results and Discussion · Figure 4 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu-HHTPBrowse family: Cu₃(HHTP)₂ / Cu–HHTP | Not specifiedCu nodes in reported 2D M-HHTP honeycomb analogue · HHTP | 2D · Pristine2D honeycomb structure confirmed by PXRD for comparison with Fe-HHTP. | main p.5 · Results and Discussion · Figure S12 |
| Fe-HHTPBrowse family: Fe–HHTP family | Not specifiedIron nodes with mixed Fe(II)/Fe(III) valency; octahedral coordination including axial DMF molecules · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineTrigonal P-3c1 two-dimensional honeycomb MOF composed of two distinct Fe-HHTP layer types distorted by coordinated DMF; unit cell a=b=21.8039 A, c=25.5548 A. | main p.2 · Results and Discussion · Figure 2; Table S1 |
| HHTP ligand | Not specified2,3,6,7,10,11-hexahydroxytriphenylene | 0D · Model SystemMolecular ligand control, not a framework. | SI p.S1-S2 · Experimental Procedures · Figure S14 |
| Iron acetate control | Fe(OAc)2Molecular iron acetate salt | 0D · Model SystemMolecular precursor/control, not a framework. | main p.5 · Results and Discussion · Figure S14 |
| Ni-HHTPBrowse family: Ni₃(HHTP)₂ / Ni–HHTP | Not specifiedNi nodes in reported 2D M-HHTP honeycomb analogue · HHTP | 2D · Pristine2D honeycomb structure confirmed by PXRD for comparison with Fe-HHTP. | main p.5 · Results and Discussion · Figure S12 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu-HHTP composite working electroderesearch_0017__mat__cu_hhtp | Electrode · Pristine Control · Composite | MOF/Super P/PTFE ink drop-cast on glassy carbon as for Fe-HHTP.glassy carbon working electrode | SI p.S3 · Electrochemical performance · Figure 6; Figures S15-S16; Table S2 |
| Cu-HHTP pressed pelletresearch_0017__mat__cu_hhtp | Pellet · Pristine Control · Pristine Framework | Approximately 5 mg powder pressed into a 5 mm pellet under 1.5 tons pressure for conductivity.pellet thickness measured using a caliper; numeric thickness not reported | SI p.S3 · Electrical conductivity measurement · Figure S13 |
| Cu-HHTP powderresearch_0017__mat__cu_hhtp | Powder · Pristine Control · Pristine Framework | Powder centrifuged, washed with water, methanol and acetone twice each, and dried in vacuum for 1 h at 60 deg C. | SI p.S2-S3 · Synthesis of Cu-HHTP · Figure S12 |
| Fe-HHTP composite working electroderesearch_0017__mat__fe_hhtp | Electrode · Target Sample · Composite | Ink containing 3 mg Fe-HHTP powder, 0.3 mg PTFE binder solution, 0.45 mg Super P carbon black and 0.09 mL ethanol; 10 uL drop-cast and dried for 30 min at 65 deg C.glassy carbon working electrode | SI p.S3 · Electrochemical performance · Figure 6; Figures S15-S16; Table S2 |
| Fe-HHTP pressed pelletresearch_0017__mat__fe_hhtp | Pellet · Target Sample · Pristine Framework | Approximately 5 mg powder pressed into a 5 mm diameter pellet under 1.5 tons pressure for four-point-probe conductivity.pellet thickness measured using a caliper; numeric thickness not reported | SI p.S3 · Electrical conductivity measurement · Figure S13; Figure S11 |
| Fe-HHTP powderresearch_0017__mat__fe_hhtp | Powder · Target Sample · Pristine Framework | Dark navy-blue powder washed with acetone and dried in a vacuum oven for 1 h at 60 deg C before characterisation. | SI p.S2 · Synthesis of Fe-HHTP |
| HHTP ligand electrochemical controlresearch_0017__mat__hhtp_ligand | Unknown · Model System · Model | Measured by cyclic voltammetry in acetonitrile using 0.1 M TBAPF6. | SI p.S11 · Electrochemical Data · Figure S14 |
| Iron acetate electrochemical controlresearch_0017__mat__iron_acetate_control | Unknown · Model System · Model | Measured by cyclic voltammetry in acetonitrile using 0.1 M TBAPF6. | SI p.S11 · Electrochemical Data · Figure S14 |
| Ni-HHTP composite working electroderesearch_0017__mat__ni_hhtp | Electrode · Pristine Control · Composite | MOF/Super P/PTFE ink drop-cast on glassy carbon as for Fe-HHTP.glassy carbon working electrode | SI p.S3 · Electrochemical performance · Figure 6; Figures S15-S16; Table S2 |
| Ni-HHTP pressed pelletresearch_0017__mat__ni_hhtp | Pellet · Pristine Control · Pristine Framework | Approximately 5 mg powder pressed into a 5 mm pellet under 1.5 tons pressure for conductivity.pellet thickness measured using a caliper; numeric thickness not reported | SI p.S3 · Electrical conductivity measurement · Figure S13 |
| Ni-HHTP powderresearch_0017__mat__ni_hhtp | Powder · Pristine Control · Pristine Framework | Powder centrifuged, washed with water, methanol and acetone twice each, and dried in vacuum for 1 h at 60 deg C. | SI p.S3 · Synthesis of Ni-HHTP · Figure S12 |