Agrawal S., Clarke S.M., Vitorica-Yrezabal I.J. et al. · Molecular Physics · 2019 · 3424-3433
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.
FeQ is suggested as a possible supercapacitor electrode material because it combines measurable conductivity with accessible crystallographic channels and modest BET surface area.
Caveat: No electrochemical supercapacitor device, capacitance, cycling, or electrode performance measurement is reported in this paper.
p010 · 5. Conclusions · Linked to 4 structured results
A remaining application challenge is preparing deposited FeQ layers on suitable substrates for ideal supercapacitor electrodes.
Caveat: This is an author-stated limitation, not a measured result.
p010 · 5. Conclusions
The measured N2 BET surface area is much lower than expected from the crystal structure, possibly due to gas-adsorption selectivity and lower N2 uptake.
Caveat: The selectivity explanation is proposed by the authors and not directly tested here.
p008 · 4. Results · Linked to 3 structured results
FeQ is a newly synthesised iron-quinizarin MOF with semiconducting transport in a pressed pellet.
Caveat: Crystallographic refinement quality is low, but the authors support the framework assignment with single-crystal diffraction and FT-IR evidence.
p002 · Abstract · Linked to 4 structured results
The authors propose that electronic conduction occurs through pi-pi interactions / pi-conjugation of quinizarin ligand moieties, probably anisotropically along pi-stacked chains.
Caveat: The paper uses expected/probably/seems language; no single-crystal anisotropic conductivity measurement was performed.
p009-p010 · 4. Results and 5. Conclusions · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| FeQ (iron-quinizarin metal-organic framework) | Main text: Fe(C14H6O4).H2O; CIF/checkCIF: C21H9FeO6 with solvent-accessible void electron densityiron centres; precursor iron(II) acetate; checkCIF reports tentative Fe(III) bond valency · quinizarin / 1,4-dihydroxyanthraquinone | 3D · PristineSingle-crystal XRD: monoclinic P21/c framework with octahedral Fe coordination, pi-stacked quinizarin phenyl groups and elliptical channels. | p002 · Abstract |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| activated FeQ material for BETresearch_0435__mat__feq | Powder · Target Sample · Pristine Framework | solvent exchange followed by heating in vacuo; activation solvent, temperature and time not specified | p008 · 4. Results |
| as-synthesised FeQ black precipitate / powder with small crystalsresearch_0435__mat__feq | Powder · Target Sample · Pristine Framework | solvothermal product; filtered under vacuum and washed with hot ethanol and acetone | p007 · 3. FeQ synthesis |
| pressed pellet of FeQ for four-contact conductivityresearch_0435__mat__feq | Pellet · Target Sample · Pristine Framework | finely powdered/compressed FeQ pellet contacted with four gold wires using silver-doped epoxy paintDynaCool resistivity puck contacts; no MOF-growth substrate | p007 · 2.3. Characterisation of materials |
| FeQ single crystal for X-ray diffractionresearch_0435__mat__feq | Single Crystal · Target Sample · Pristine Framework | small approximately 10 micrometre crystals from solvothermal synthesis0.01 x 0.01 x 0.01 mm in Table S1/CIF | p001-p002 · Single Crystal X-ray diffraction of FeQ / Table S1 · Table S1 |