Song X., Wang X., Li Y. et al. · Angewandte Chemie - International Edition · 2020 · 1118-1123
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.
Cu3(HHTP)2 acts as an organic spacer in LSMO/Cu3(HHTP)2/Co/Au spin valves, giving inverse MR up to about -25% at 10 K and retaining about -3% at 200 K.
Caveat: The exact spin-polarised transport physics is stated to remain elusive; Co penetration and roughness influence the active barrier.
1122 · Summary · Figure 4; Figure S16-S17 · Linked to 4 structured results
Co penetration into the MOF active layer is observed, especially for thinner MOF spacers, and is proposed to affect resistivity and MR behaviour.
Caveat: Quantitative Co concentration profiles were shown graphically but not digitised here.
S14 · Section 7 · Figures S12-S13 · Linked to 4 structured results
Cu3(HHTP)2 films on LSMO are highly crystalline and phase-pure, with Cu-HHTP 2D honeycomb layers stacked perpendicular to the substrate in slipped-parallel AB mode.
Caveat: Film peaks are slightly broadened and the SI notes partially disordered stacking layers from perpendicular domain-size analysis.
1119-1120 · Results and Discussion · Figure 2; Figures S6-S7 · Linked to 5 structured results
The Cu3(HHTP)2 HOMO/LUMO levels align reasonably with LSMO and Co work functions, which is proposed to facilitate charge-carrier injection and extraction.
Caveat: LSMO and Co work functions are literature values, not first-hand measurements in this paper.
1121 · Results and Discussion · Figure S20; Figure S21 · Linked to 5 structured results
Mixed Cu valency and pi-d conjugation are proposed to facilitate charge delocalisation and intralayer charge transport in Cu3(HHTP)2.
Caveat: The electronic-structure relationship is mechanistic interpretation rather than a directly isolated variable.
1121 · Results and Discussion · Figure S9 · Linked to 3 structured results
The pristine 100 nm Cu3(HHTP)2 thin film behaves as a semiconductor with 0.29 S cm-1 conductivity at 300 K and thermally activated transport at higher temperatures.
Caveat: Conductivity value is reported as estimated; lower-temperature behaviour is assigned to Mott-VRH over 125-200 K.
1120 · Results and Discussion · Figure 3 · Linked to 3 structured results
The OSV temperature-dependent resistivity, negative MR, parabolic differential conductance and interface evidence are interpreted as multi-step tunnelling dominated spin-dependent transport.
Caveat: Authors explicitly state that exact spin-polarised transport physics remains elusive; Co penetration complicates the simple barrier picture.
1121 · Results and Discussion · Figures S12-S13; S22-S23 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu3(HHTP)2 2D conductive MOFBrowse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu3(HHTP)2; HHTP = 2,3,6,7,10,11-hexahydroxytriphenyleneCu ions in square-planar coordination; XPS indicates mixed Cu(II)/Cu(I) centres. · Hexadentate HHTP ligands, reported as semiquinonate/catecholate redox states. | 2D · Pristine2D honeycomb layers with slipped-parallel AB stacking; face-on oriented films on LSMO/STO by GIXRD and simulated PXRD comparison. | 1119 · Results and Discussion · Figure 1; Figure 2 |
| Cu3(HHTP)2 structural modelBrowse family: Cu₃(HHTP)₂ / Cu–HHTP | DFTB+/Material Studio model of Cu3(HHTP)2Modelled Cu nodes in the Cu3(HHTP)2 framework. · Modelled HHTP ligands. | 2D · Model SystemRelaxed slipped-parallel AB packing model with space group P1. | S8 · Section 3. Structure Simulation and Calculation of Crystalline Domain Size · Figure S6; Figure S7; Table S1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| 100 nm Cu3(HHTP)2 thin film on glassresearch_0129__mat__mat_cu3hhtp2 | Thin Film · Pristine Control · Pristine Framework | Layer-by-layer grown film with Au electrodes deposited by thermal evaporation through a shadow mask.glass substrate with four parallel Au electrodes · 100 nm; obtained from 20 growth cycles. | S12 · Section 6. Electrical Measurements of Cu3(HHTP)2 Film · Figure S11 |
| 100 nm Cu3(HHTP)2 thin film on ITO glassresearch_0129__mat__mat_cu3hhtp2 | Thin Film · Pristine Control · Pristine Framework | Layer-by-layer grown film with point electrodes deposited by thermal evaporation through a mask.ITO glass electrodes · 100 nm; obtained from 20 growth cycles. | S12 · Section 6. Electrical Measurements of Cu3(HHTP)2 Film · Figure S10; Table S2 |
| 100 nm Cu3(HHTP)2 thin film on LSMO/STOresearch_0129__mat__mat_cu3hhtp2 | Thin Film · Pristine Control · Pristine Framework | In situ layer-by-layer growth on LSMO/STO after LSMO surface cleaning and 3-APTMS self-assembled monolayer modification.3-APTMS-modified LSMO electrode on (001) STO · 100 nm; 20 growth cycles implied by 5 nm per cycle. | 1119 · Results and Discussion · Figure 2a |
| Cu3(HHTP)2 thin film on quartz glassresearch_0129__mat__mat_cu3hhtp2 | Thin Film · Pristine Control · Pristine Framework | Layer-by-layer grown by alternating Cu(OAc)2 and HHTP ethanol solutions after substrate cleaning/functionalisation.functionalised quartz glass · Controlled by growth cycles; about 5 nm per cycle. | 1119 · Results and Discussion · Figure 2b |
| Slipped-parallel AB Cu3(HHTP)2 modelresearch_0129__mat__mat_cu3hhtp2_model | Model · Model System · Model | Relaxed in Accelrys Material Studio 7.0 / Reflex module and DFTB+ coordinates reported. | S8 · Section 3. Structure Simulation and Calculation of Crystalline Domain Size · Table S1 |
| Cu3(HHTP)2 powderresearch_0129__mat__mat_cu3hhtp2 | Powder · Pristine Control · Pristine Framework | Solvothermal powder, centrifuged, washed with water and acetone, then vacuum dried. | S4 · Synthesis of Cu3(HHTP)2 Powder |
| Cu3(HHTP)2/Co/Au interfacial multilayers on Siresearch_0129__mat__mat_cu3hhtp2 | Thin Film · Target Sample · Composite | Au/Co/MOF multilayers grown on Si and peeled from Si with carbon tape for XPS.Si substrate before peel-off with carbon tape · MOF 30 nm or 70 nm; Co/Au layers not fully quantified in the SI passage. | S14 · Section 7. Interfacial Structure · Figure S13 |
| LSMO/Cu3(HHTP)2(100 nm)/Co/Au organic spin valveresearch_0129__mat__mat_cu3hhtp2 | Electrode · Target Sample · Composite | Vertical OSV device with a 100 nm Cu3(HHTP)2 spacer selected for systematic MR investigations.LSMO bottom electrode on STO · Cu3(HHTP)2 spacer 100 nm; LSMO 50 nm, Co 50 nm, Au 50 nm. | 1121 · Results and Discussion · Figure 4b |
| LSMO/Cu3(HHTP)2(30 nm)/Co/Au organic spin valveresearch_0129__mat__mat_cu3hhtp2 | Electrode · Target Sample · Composite | Vertical OSV device with Cu3(HHTP)2 spacer, thermally evaporated Co top electrode and Au cap.LSMO bottom electrode on STO · Cu3(HHTP)2 spacer 30 nm; LSMO 50 nm, Co 50 nm, Au about 50 nm. | S4 · Fabrication of the Cu3(HHTP)2 2D c-MOF-Based Spin Valves · Figure S17 |
| LSMO/Cu3(HHTP)2(50 nm)/Co/Au organic spin valveresearch_0129__mat__mat_cu3hhtp2 | Electrode · Target Sample · Composite | Vertical OSV device with Cu3(HHTP)2 spacer, thermally evaporated Co top electrode and Au cap.LSMO bottom electrode on STO · Cu3(HHTP)2 spacer 50 nm; LSMO 50 nm, Co 50 nm, Au about 50 nm. | S16 · Section 9. Thickness and Temperature Dependent Magnetoresistance · Figure S17 |
| LSMO/Cu3(HHTP)2(70 nm)/Co/Au organic spin valveresearch_0129__mat__mat_cu3hhtp2 | Electrode · Target Sample · Composite | Vertical OSV device with Cu3(HHTP)2 spacer, thermally evaporated Co top electrode and Au cap.LSMO bottom electrode on STO · Cu3(HHTP)2 spacer 70 nm; LSMO 50 nm, Co 50 nm, Au about 50 nm. | S16 · Section 9. Thickness and Temperature Dependent Magnetoresistance · Figure S17 |