Fuku K., Miyata M., Takaishi S. et al. · Chemical Communications · 2020 · 8619-8622
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 claim 1 is the first densely packed coordination polymer to undergo postsynthetic carrier doping with a structural change.
Caveat: This priority claim depends on literature context and was not independently verified beyond the provided article.
8621 · Summary · Linked to 2 structured results
The crystal structure of the conductive reduced state 2 has not been solved.
8621 · Main text · Fig. 5 · Linked to 1 structured result
Hydrazine reduction converts 1 into reduced 2, eliminating nitrate and chloroform and reducing both NDI cores and Cu(II).
Caveat: The precise crystal structure of 2 was not identified.
8621 · Main text · Fig. 3; Fig. 4 · Linked to 5 structured results
Guest-loaded 1 is flexible enough to undergo reversible structural change by chloroform desorption and readsorption.
Caveat: PXRD verifies reversibility, but a solved crystal structure for 1d is not reported.
8620 · Main text · Fig. 2 · Linked to 2 structured results
Electrical conductivity emerges after hydrazine reduction: pristine 1 is below 10-9 S cm-1, while 2 exceeds 10-7 S cm-1 at room temperature and is semiconducting.
Caveat: Conductivity was measured on pressed pellets using a two-probe method; room-temperature value is reported as a lower bound in text.
8621 · Main text · Fig. 5 · Linked to 4 structured results
The infinite pi-stacked column in the flexible 1D coordination polymer is proposed as the through-space conduction pathway retained after reduction.
Caveat: The authors state that the crystal structure of 2 has not been identified, so retention of the pi-stacked column is inferred from conductivity and spectroscopy.
8621 · Main text · Fig. 5 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| [Cu(NDI-enpy)2(NO3)2].2CHCl3 (1) | C58H42Cl6CuN10O14Cu(II) ions coordinated by pyridyl moieties and nitrate axial ligands · NDI-enpy | 1D · PristineSingle-crystal X-ray structure: 1D coordination polymer made of rectangular units with intrachain and interchain pi-stacking, containing two chloroform molecules in closed inner spaces. | 8619 · Main text · Fig. 1 |
| [Cu(NDI-enpy)2(NO3)2] desolvated complex (1d) | [Cu(NDI-enpy)2(NO3)2]Cu(II) ions with nitrate axial ligands · NDI-enpy | 1D · PristineDesolvated phase assigned by PXRD; pattern differs from 1 and returns after chloroform readsorption. | 8620 · Main text · Fig. 2b |
| [Cu(NDI-enpy)2].5H2O (2) | C56H50N8CuO13Reduced Cu(I) centres · NDI-enpy radical-anion framework, average NDI core charge about -0.5 | 1D · PristineHydrazine-reduced crystalline coordination polymer; PXRD differs from 1 and 1d, while transport and spectroscopy suggest retention of pi-stacked columns. | 8621 · Main text · Fig. 4; Fig. 5 |
| N,N'-di(2-(pyridin-4yl)ethyl)-1,4,5,8-naphthalenetetracarboxdiimide linker | C28H20N4O4NDI-enpy molecule with naphthalenediimide core and pyridyl ethyl groups | 0D · UnknownMolecular linker precursor for the coordination polymer. | 3 · Syntheses |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| purple crystals of 1research_0726__mat__mat_1_guest_loaded | Single Crystal · Pristine Control · Guest Loaded | As-synthesised guest-loaded crystals separated by decantation using methanol and chloroform. | 3 · Syntheses |
| pressed pellet of 1research_0726__mat__mat_1_guest_loaded | Pellet · Pristine Control · Guest Loaded | Pressed pellet for two-probe DC conductivity measurement.pellet thickness 250 um; pellet diameter 2.5 mm; carbon-paste electrode diameter 1.72 mm | 2 · General information |
| desolvated 1dresearch_0726__mat__mat_1d_desolvated | Powder · Pristine Control · Pristine Framework | Desolvated form of 1; exact desolvation preparation conditions not reported. | 8620 · Main text · Fig. 2b; Fig. S1 |
| black solid 2 from 1research_0726__mat__mat_2_reduced | Powder · Target Sample · Doped | Hydrazine-reduced black solid collected by filtration under nitrogen-atmosphere synthesis conditions. | 4 · Syntheses |
| black solid 2 obtained from 1dresearch_0726__mat__mat_2_reduced | Powder · Target Sample · Doped | Reduced from desolvated 1d using the same hydrazine method; PXRD pattern similar to 2 from 1. | 5 · PXRD patterns · Fig. S1 |
| pressed pellet of 2research_0726__mat__mat_2_reduced | Pellet · Target Sample · Doped | Pressed pellet contacted with gold wires and carbon paste for two-probe DC conductivity.pellet thickness 250 um; pellet diameter 2.5 mm; carbon-paste electrode diameter 1.72 mm | 2 · General information |
| NDI-enpy linker precipitateresearch_0726__mat__mat_ndi_enpy | Powder · Paper Level Unspecified · Unknown | Precipitated into water, filtered, washed with methanol, and dried. | 3 · Syntheses |