Dong R., Zhang Z., Tranca D.C. et al. · Nature Communications · 2018 · 2637
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.
The authors present conjugated 2D MOFs as potential ferromagnetic semiconductors for spintronics because they combine high conductivity and low-temperature magnetic ordering.
Caveat: Application relevance is prospective; no spintronic device was fabricated or measured.
1 · Abstract · Linked to 3 structured results
The authors do not rule out impacts from defects, grain boundaries, crystallite tilting and edges in the bulk polycrystalline material.
Caveat: This limits clean structure-property interpretation and anisotropic transport extraction.
7 · Discussion · Linked to 1 structured result
Spectroscopy supports square-planar iron-bis(dithiolene) coordination with Fe(III) centres and no detectable FeO/Fe2O3 impurity.
Caveat: Minor S-S XPS components are reported; authors hesitate to prove interlayer S-S linkages.
3-4 · Compositional characterization · Fig. 2; Supplementary Fig. 6 · Linked to 8 structured results
PTC-Fe is assigned as a hexagonal, layer-stacked 2D iron-bis(dithiolene)/coronene framework with AB stacking and NH4+ counterions.
Caveat: Structure is based on powder diffraction, HRTEM/SAED and DFT simulation; no single-crystal structure or CIF was supplied.
2-3 · Synthesis and structure · Fig. 1 · Linked to 9 structured results
PTC-Fe exhibits ferromagnetic exchange interactions within nanoscale magnetic clusters below approximately 20 K, with an average blocking temperature near 15 K.
Caveat: Authors explicitly frame the magnetism as nanoscale clusters rather than clear bulk saturated ferromagnetism.
1, 6 · Abstract; Magnetic properties · Fig. 5 · Linked to 5 structured results
The proposed magnetic coupling is indirect exchange through delocalised p orbitals, linked to Fe d / ligand p hybridisation, rather than direct Fe-Fe exchange.
Caveat: Mechanism is inferred from DFT and control measurements; authors note defects may still affect conductive and magnetic behaviour.
7 · Discussion · Supplementary Figs. 10, 12, 16 · Linked to 4 structured results
PTC-Fe is a conductive 2D MOF pellet with approximately 10 S cm-1 conductivity at 300 K and apparent semiconducting temperature dependence.
Caveat: Transport is measured on bulk polycrystalline pellets; grain boundaries dominate the apparent semiconducting behaviour.
5 · DC conductivity measurements · Fig. 4 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Coronene | C24H12none · coronene | 0D · UnknownOrganic molecular control. | 7 · Discussion · Supplementary Fig. 15 |
| PTC-Fe 2D MOF | [Fe3C24S12]3-.(NH4+)3Fe(III) centres in planar iron-bis(dithiolene) linkages · 1,2,3,4,5,6,7,8,9,10,11,12-perthiolated coronene (PTC) | 2D · PristineLayer-stacked hexagonal 2D framework; AB stacking with 25% shift in X and Y; a=b approximately 11.7-12 A, interlayer distance approximately 3.9-4 A. | 1-3 · Abstract; Synthesis and structure · Fig. 1 |
| PTC ligand | Not specifiednone · perthiolated coronene | 0D · UnknownOrganic ligand control. | 7 · Discussion · Supplementary Fig. 15 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| coronene controlresearch_0045__mat__coronene_control | Powder · Pristine Control · Unknown | starting-material control measured by SQUID | 7 · Discussion · Supplementary Fig. 15 |
| AB-stacked PTC-Fe DFT modelresearch_0045__mat__ptc_fe | Model · Model System · Model | periodic DFT model with 25% X/Y layer shiftmultilayer AB stacking | 2, 7 · Synthesis and structure; Discussion · Fig. 1b; Supplementary Fig. 16 |
| black polycrystalline PTC-Fe 2D MOF powder/crystalsresearch_0045__mat__ptc_fe | Powder · Target Sample · Pristine Framework | as-synthesised black polycrystalline solid, washed and vacuum dried | 2 · Synthesis and structure |
| compressed PTC-Fe pelletresearch_0045__mat__ptc_fe | Pellet · Target Sample · Pristine Framework | finely ground powder pressed at approximately 1 GPaMylar tapes; Cu wire contacts with carbon paint · about 300 um; diameter about 1.2 cm | 7 · Conductivity measurements · Fig. 4; Supplementary Fig. 13 |
| PTC-Fe powder magnetic sampleresearch_0045__mat__ptc_fe | Powder · Target Sample · Pristine Framework | powder sample for SQUID-VSM; thin sheets used for Mossbauer | 7 · Magnetic studies · Fig. 5 |
| single-layer PTC-Fe DFT modelresearch_0045__mat__ptc_fe | Model · Model System · Model | periodic DFT modelsingle layer | 4-5 · Electronic structure of PTC-Fe · Fig. 3a,b |
| PTC ligand controlresearch_0045__mat__ptc_ligand | Powder · Pristine Control · Unknown | organic ligand control measured by SQUID | 7 · Discussion · Supplementary Fig. 15 |