Cheng L., Liang C., Li B. et al. · Cell Reports Physical Science · 2022 · 101004
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.
A 2 x 3 SCU-15 single-crystal pixelated detector can image an L-shaped lead plate under X-ray irradiation.
Caveat: Proof-of-concept imaging uses only six crystal pixels, and authors state finer imaging needs improved pixel processing.
main p.8 · X-ray detection performance · Figure 5E; Figure S21 · Linked to 8 structured results
SCU-15 maintains detector response and crystallinity after high accumulated X-ray dose and maintains structural integrity after two months in moist air.
Caveat: Reported as qualitative stability; no numerical degradation percentage was extracted.
main p.7-p.8 · X-ray detection performance · Figures S18-S20 · Linked to 3 structured results
Smooth SCU-15 single-crystal surfaces and cracked pelleted morphology help explain superior carrier transport in the single-crystal device.
Caveat: The morphology-transport link is plausible and author-stated but not isolated by a controlled defect-density experiment.
main p.6 · Comparison of optoelectronic properties · Figures S14-S15 · Linked to 4 structured results
The SCU-15 single-crystal detector has higher charge-carrier mobility-lifetime product, longer diffusion length, higher sensitivity and lower detection limit than the pelleted polycrystalline device.
Caveat: Device geometry and crystal orientation affect measurements; authors note optimisation of measurements versus local MOF structure remains future work.
main p.6-p.7 · Comparison of optoelectronic properties; X-ray detection performance · Figures 4E-4F; Figures 5B-5D · Linked to 8 structured results
Fast initial heating accelerates in situ disulfide-bond formation from 4-MBA and promotes growth of millimetre-scale SCU-15 single crystals.
Caveat: Mechanistic language is inferential; the evidence is heating-rate-dependent crystal size, S-S species trend and room-temperature control complex.
main p.3-p.4 · Synthesis and characterizations of SCU-15 large single crystals · Figures 2-3 · Linked to 2 structured results
SCU-15 shows intrinsic semiconductive behaviour with a 2.63 eV optical band gap, and DFT assigns a ligand-to-metal charge-transfer electronic structure.
Caveat: No conventional four-probe conductivity value is reported; transport evidence is dominated by detector/device measurements.
main p.4 · Density functional theory calculations · Figure 4A; Figure S8 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| SCU-15 | UO2(SC6H4COO)2(DMF); CIF/Table S3 empirical formula C17H15NO7S2UUranyl UO2(2+) units; each uranium cation coordinated by three disulfide-linked carboxylate ligands and one DMF molecule · 4-mercaptobenzoic acid oxidised in situ to disulfide-linked (SC6H4COO)2(2-) ligand | 2D · PristineMonoclinic P21/c layered two-dimensional uranium-based semiconductive MOF with dense uranyl-carboxylate layers and interlayer U-O...H hydrogen bonds. | main p.2 · Summary; Results and Discussion · Figure 1; Table S1 |
| SCU-15 periodic DFT model | SCU-15 unit cell model based on experimental SC-XRD/CIF dataUranyl uranium sites from the experimental SCU-15 structure · Disulfide-linked carboxylate ligands from the experimental SCU-15 structure | 2D · Model SystemPeriodic computational model with lattice parameters and atomic configurations kept consistent with experimental SC-XRD data. | main p.9 · Computation methods · Figure S8 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| SCU-15 2 x 3 single-crystal array detectorresearch_0019__mat__scu15 | Electrode · Target Sample · Pristine Framework | Six uniform 2 mm SCU-15 single crystals fabricated into a 2 x 3 pixelated array detector.Ag detector electrodes · six 2 mm single crystals | main p.8-p.9 · X-ray detection performance; Fabrication · Figure 5E; Figure S21 |
| SCU-15 crystalsresearch_0019__mat__scu15 | Single Crystal · Target Sample · Pristine Framework | Light-yellow solvothermal crystals; crystal size tunable from about 50 um to 3 mm by controlling heating rate. | main p.8-p.9 · Synthesis of SCU-15 · Figures 1-2; Figure S3 |
| SCU-15 DFT model sampleresearch_0019__mat__scu15_dft_model | Model · Model System · Model | Periodic unit-cell model derived from experimental SC-XRD structure. | main p.9 · Computation methods · Figure S8 |
| SCU-15 large single crystalresearch_0019__mat__scu15 | Single Crystal · Target Sample · Pristine Framework | Millimeter-scale block crystal obtained at fast heating rate; largest face corresponds to the (011) plane.2.9 x 1.9 x 1.5 mm3 block single crystal reported for device fabrication | main p.2-p.5 · Introduction; Comparison of optoelectronic properties · Figure 2D; Figure S10 |
| SCU-15 PP deviceresearch_0019__mat__scu15 | Pellet · Target Sample · Pristine Framework | Pure SCU-15 fine powder pelleted at 10 MPa and contacted as Ag/SCU-15 pellet/Ag detector.Ag contacts/electrodes · 3 mm diameter pellet mould; numeric thickness not reported | main p.9 · Fabrication of SCU-15-SC, SCU-15 PP, and SCU-15 array detector devices · Figure S12 |
| SCU-15 SC deviceresearch_0019__mat__scu15 | Single Crystal · Target Sample · Pristine Framework | Ag/SCU-15 single crystal/Ag vertical photoconductor; (011) crystal plane connected to the anode; cathode irradiation configuration.Ag contacts/electrodes · 3 mm single crystal used; device crystal described as 2.9 x 1.9 x 1.5 mm3 | main p.5 and p.9 · Comparison of optoelectronic properties; Fabrication of SCU-15-SC, SCU-15 PP, and SCU-15 array detector devices · Figure 4C; Figure S10 |