Miner E.M., Wang L., Dinca M. · Chemical Science · 2018 · 6286-6291
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.
Hexagonal Ni3(HITP)2 and Cu3(HHTP)2 show lower ORR overpotential and higher current density than trigonal Ni3(HHTP)2 and Co3(HHTP)2.
Caveat: Cu3(HITP)2 has high initial activity but is unstable under O2, so reliable prolonged kinetic data were not collected.
1 · Results and discussion · Fig. 2 · Linked to 5 structured results
Cu3(HITP)2 is unstable under O2 during the electrochemical conditions, preventing reliable prolonged ORR kinetic and ESA measurements.
1 · Results and discussion · Fig. S2 · Linked to 4 structured results
Pi-stacking within the 2D MOF layers is essential for high electrical conductivity, redox activity and catalytic activity in these triphenylene MOFs.
Caveat: Some conductivity values for hexagonal comparators are cited from prior literature rather than measured afresh in this paper.
1 · Abstract · Linked to 5 structured results
Most analogues show Tafel behaviour consistent with rate-limiting electron transfer coupled with O2 binding during ORR.
Caveat: Co3(HHTP)2 at pH 13 is explicitly noted as a possible exception with a different rate-limiting step.
3 · Results and discussion · Fig. 3 · Linked to 6 structured results
The low ORR activity of trigonal MOFs is attributed to lower conductivity, lower electroactive surface area and redox inactivity, which hinder electron transfer and hydroperoxide reduction.
Caveat: Mechanistic intermediate assignment is proposed rather than directly observed.
5 · Results and discussion · Scheme 1 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co3(HHTP)2 trigonal MOFBrowse family: Co₃(HHTP)₂ / Co–HHTP | Co3(HHTP)2Co-containing honeycomb sheets alternating with trinuclear M3(HHTP)(H2O)12 clusters. · HHTP / hexahydroxytriphenylene. | 2D · PristineTrigonal crystal system with alternating honeycomb layers and rotated trinuclear clusters. | 1 · Results and discussion · Fig. 1 |
| Cu3(HHTP)2 hexagonal MOFBrowse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu3(HHTP)2; HHTP = 2,3,6,7,10,11-hexahydroxytriphenyleneDivalent Cu coordinated by HHTP-derived O donors in a 2D honeycomb lattice. · HHTP / hexahydroxytriphenylene. | 2D · PristineHexagonal crystal system; 2D honeycomb lattice stacked in a slipped parallel configuration along c. | 1 · Results and discussion · Fig. 1 |
| Cu3(HITP)2 hexagonal MOFBrowse family: Cu₃(HITP)₂ / Cu–HITP | Cu3(HITP)2Divalent Cu coordinated by hexaaminotriphenylene-derived N donors in a 2D honeycomb lattice. · HITP / hexaaminotriphenylene-derived ligand. | 2D · PristineHexagonal crystal system; 2D honeycomb lattice stacked in a slipped parallel configuration along c. | 1 · Results and discussion · Fig. 1 and Fig. 2 |
| Ni3(HHTP)2 trigonal MOFBrowse family: Ni₃(HHTP)₂ / Ni–HHTP | Ni3(HHTP)2Ni-containing honeycomb sheets alternating with trinuclear M3(HHTP)(H2O)12 clusters. · HHTP / hexahydroxytriphenylene. | 2D · PristineTrigonal crystal system with alternating honeycomb layers and rotated trinuclear clusters. | 1 · Results and discussion · Fig. 1 |
| Ni3(HITP)2 hexagonal MOFBrowse family: Ni₃(HITP)₂ / Ni–HITP | Ni3(HITP)2; HITP = 2,3,6,7,10,11-hexaiminotriphenyleneDivalent Ni coordinated by hexaaminotriphenylene-derived N donors in a 2D honeycomb lattice. · HITP / hexaaminotriphenylene-derived ligand. | 2D · PristineHexagonal crystal system; 2D honeycomb lattice stacked in a slipped parallel configuration along c. | 1 · Results and discussion · Fig. 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co3(HHTP)2/Nafion-modified glassy carbon electroderesearch_0139__mat__mat_co3_hhtp2_trig | Electrode · Target Sample · Composite | Catalyst ink drop-cast from MOF powder, water/isopropanol and Nafion, then vacuum-dried.glassy carbon rotating disk electrode | S4 · Deposition of the MOFs onto the electrodes |
| Co3(HHTP)2 MOF powderresearch_0139__mat__mat_co3_hhtp2_trig | Powder · Target Sample · Pristine Framework | Powder synthesised according to a prior HHTP MOF report; used for PXRD, electrode inks and conductivity comparison. | S4 · Synthesis of the HHTP MOFs |
| Cu3(HHTP)2/Nafion-modified glassy carbon electroderesearch_0139__mat__mat_cu3_hhtp2_hex | Electrode · Target Sample · Composite | Catalyst ink drop-cast from MOF powder, water/isopropanol and Nafion, then vacuum-dried.glassy carbon rotating disk electrode | S4 · Deposition of the MOFs onto the electrodes |
| Cu3(HHTP)2 MOF powderresearch_0139__mat__mat_cu3_hhtp2_hex | Powder · Target Sample · Pristine Framework | Powder synthesised according to a prior HHTP MOF report; used for PXRD, electrode inks and conductivity comparison. | S4 · Synthesis of the HHTP MOFs |
| Cu3(HITP)2/Nafion-modified glassy carbon electroderesearch_0139__mat__mat_cu3_hitp2_hex | Electrode · Target Sample · Composite | Catalyst ink drop-cast from MOF powder, water/isopropanol and Nafion, then vacuum-dried.glassy carbon rotating disk electrode | S4 · Deposition of the MOFs onto the electrodes |
| Cu3(HITP)2 MOF powderresearch_0139__mat__mat_cu3_hitp2_hex | Powder · Target Sample · Pristine Framework | Powder synthesised according to a prior report; used for PXRD and electrode inks. | S4 · Synthesis of the HITP MOFs |
| Ni3(HHTP)2/Nafion-modified glassy carbon electroderesearch_0139__mat__mat_ni3_hhtp2_trig | Electrode · Target Sample · Composite | Catalyst ink drop-cast from MOF powder, water/isopropanol and Nafion, then vacuum-dried.glassy carbon rotating disk electrode | S4 · Deposition of the MOFs onto the electrodes |
| Ni3(HHTP)2 MOF powderresearch_0139__mat__mat_ni3_hhtp2_trig | Powder · Target Sample · Pristine Framework | Powder synthesised according to a prior HHTP MOF report; used for PXRD, electrode inks and conductivity comparison. | S4 · Synthesis of the HHTP MOFs |
| Ni3(HITP)2/Nafion-modified glassy carbon electroderesearch_0139__mat__mat_ni3_hitp2_hex | Electrode · Target Sample · Composite | Catalyst ink drop-cast from MOF powder, water/isopropanol and Nafion, then vacuum-dried.glassy carbon rotating disk electrode | S4 · Deposition of the MOFs onto the electrodes |
| Ni3(HITP)2 MOF powderresearch_0139__mat__mat_ni3_hitp2_hex | Powder · Target Sample · Pristine Framework | Powder synthesised according to a prior report; used for PXRD, electrode inks and pressed-pellet comparison. | S4 · Synthesis of the HITP MOFs |
| Trigonal MOF-modified ITO electrodesresearch_0139__mat__mat_co3_hhtp2_trig | Electrode · Target Sample · Composite | Co3(HHTP)2 and Ni3(HHTP)2 deposited on ITO for substrate-control CVs.indium tin oxide | 2 · Results and discussion · Fig. S3 |