Qu L., Iguchi H., Takaishi S. et al. · Journal of the American Chemical Society · 2019 · 6802-6806
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.
PMC-1 is presented as the first porous molecular conductor combining porosity, through-space conduction pathways, and charge carriers.
Caveat: Porosity evidence in this paper is electrochemical ion selectivity rather than conventional gas sorption data.
6802 · Abstract · Linked to 4 structured results
PMC-1s and PMC-1h retain linear coordination polymers but likely change from 1D columnar pi stacking to 2D-like packing, improving carrier mobility and lowering grain-boundary resistivity.
Caveat: Rietveld analysis of PMC-1s was not successful due to broad peaks; structure-property link is inferential.
S15 · Estimation of structure · Figures S12-S16 · Linked to 5 structured results
Removal of lattice DMA molecules induces structural change and enhances conductivity in PMC-1h compared with PMC-1 pellets.
Caveat: PMC-1h structure is inferred indirectly via the more crystalline soaked analogue PMC-1s because PMC-1h PXRD has broad peaks.
6805 · Results/discussion · Figure 4, Figures S10-S16 · Linked to 4 structured results
Li+ can enter PMC-1 void space during reduction while bulky n-Bu4N+ is impeded, supporting porosity and ion-size selectivity.
Caveat: Derived from solid-state electrochemistry rather than direct pore-size or adsorption measurement.
6804 · Results/discussion · Figure 3a · Linked to 3 structured results
Chemical reduction using hydrazine monohydrate gave PMC-1 with numerous unisolable by-products, so electrochemical fabrication was preferred.
Caveat: No detailed hydrazine recipe or by-product characterisation is provided.
6805 · Conclusion
Face-to-face helical pi-stacked columns of NDI cores form the through-space conduction pathway in PMC-1.
Caveat: The paper attributes semiconducting rather than metallic behaviour to charge localisation from randomly accommodated nitrate ions.
6805 · Conclusion · Figure 1 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| NDI-py linker | C24H12N4O4N,N'-di(4-pyridyl)-1,4,5,8-naphthalenetetracarboxdiimide | 0D · Model SystemMolecular linker/control compound capable of forming infinite pi-stacked columnar architectures in PMC-1. | S2 · Syntheses |
| PMC-1 | [Cd(NDI-py)(OH2)4](NO3)x.nDMA; x later assigned as 1.3 +/- 0.1 from PMC-1h elemental analysis; n not precisely determined[Cd(OH2)4]2+ ions · N,N'-di(4-pyridyl)-1,4,5,8-naphthalenetetracarboxdiimide (NDI-py) | 1D · PristineLinear coordination polymers with helical pi-stacked NDI-py columns; hexagonal P6222/P6422 conglomerates; through-space conduction pathway. | 6803 · Results/discussion · Figure 1 |
| PMC-1h | [Cd(NDI-py)](NO3)x.mH2O; x = 1.3 +/- 0.1; m variableCd2+ coordination environment retained after heating; six-coordinated octahedral environment by EXAFS comparison · NDI-py | 1D · PristineThermally treated/desolvated derivative of PMC-1; linear CPs retained but pi-stacked structure changed to a 2D-like packing mode with poorer order along b axis. | 6803 · Results/discussion · Figures S3, S10-S16 |
| PMC-1s | [Cd(NDI-py)](NO3)x.mH2O; DMA-free soaked derivative, x inferred from PMC-1 familyCd2+ coordination environment retained; six-coordinated octahedral environment by EXAFS comparison · NDI-py | 1D · PristineToluene-soaked analogue used to estimate PMC-1h structure; monoclinic P-lattice estimated from high-resolution PXRD; CPs extend along [-1 0 1]. | S15 · Estimation of the structure of PMC-1h via PMC-1s · Figures S12-S16 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| NDI-py powder/controlresearch_0326__mat__ndi_py | Powder · Model System · Model | Synthesised linker dispersed in KBr pellets for IR/UV-Vis-NIR comparison | S2 · Synthesis of NDI-py · Figures S1, Figure 2 |
| PMC-1 pressed pelletresearch_0326__mat__pmc_1 | Pellet · Target Sample · Guest Loaded | Pressed pellet of as-synthesised PMC-1Diameter 3 mm; thickness between 200 and 400 um | S4 · Electrical conductivity measurement · Table S4 |
| PMC-1 bulk powder/crystalsresearch_0326__mat__pmc_1 | Powder · Target Sample · Guest Loaded | As-synthesised PMC-1 used for spectroscopy, CV, SEC, TG, PXRD and XAFS | S4 · Solid-state cyclic voltammetry · Figures S1-S8, S10-S15 |
| PMC-1 single crystalresearch_0326__mat__pmc_1 | Single Crystal · Target Sample · Guest Loaded | As-synthesised dark brown rod-like crystal, washed with DMA and ethanol and dried in N2PtIr cathode during growth; gold wires/carbon paste for conductivity measurement · Crystal size 0.317 x 0.024 x 0.020 mm3 in Table S1; electrical-contact gold wires 15 um diameter | S13 · Electrical conductivity in single crystal and pressed pellet · Figure S9, Table S3 |
| PMC-1h pressed pelletresearch_0326__mat__pmc_1h | Pellet · Target Sample · Guest Loaded | PMC-1 heated to 210 deg C under N2/nitrogen flow to remove DMA, then partially rehydrated during handlingDiameter 3 mm; thickness between 200 and 400 um | S3 · Preparation of PMC-1h · Table S5 |
| PMC-1s pressed pelletresearch_0326__mat__pmc_1s | Pellet · Target Sample · Guest Loaded | Fresh PMC-1 soaked in N2-bubbled toluene for one week, collected and dried in N2; pressed pellet conductivity reported at room temperature | S15 · Estimation of the structure of PMC-1h via PMC-1s · Figures S12-S16 |