Qi M., Cheng L., Zhang X. et al. · Advanced Science · 2025 · 2503369
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 three materials are assigned as layered 2D c-MOFs with comparable hexagonal single-pore frameworks and AA stacking, while d-spacing varies with linker structure.
Caveat: Assignments rely on PXRD/Pawley fits and simulated stacking models, not single-crystal data.
4 · Results and Discussion · Figure 2; Figures S12-S13 · Linked to 4 structured results
Combining quinone C=O, pyrazine C=N and CuO4 active sites in Cu-TTPQ increases accessible redox sites and gives higher capacity and cycle life than the single-motif analogues.
Caveat: Battery electrodes are composites with carbon/PVDF; pristine framework transport and structure support but do not alone prove device performance.
6-7 · Results and Conclusion · Figure 3; Figure 4 · Linked to 5 structured results
The MOFs are made by one-pot coordination assembly from flexible ligands, with Cu2+/DMF facilitating in situ cyclodehydrogenation to rigid conjugated linkers.
Caveat: Mechanistic role of Cu2+/DMF is phrased by the authors as probable; no isolated kinetic mechanism is quantified.
3 · Results and Discussion · Figure S9 · Linked to 1 structured result
Cu-TTPQ has the highest two-probe pellet conductivity among the three pristine frameworks, consistent with the authors' attribution of its slightly higher Na+ diffusion coefficients and rate capability to improved charge transfer.
Caveat: Conductivity is from two-probe pellets and includes contact effects; the cross-cathode diffusion comparison is qualitative because the plotted coefficients were not digitised.
S25 · Section 14 · Table S2 · Linked to 6 structured results
DFT and ex situ spectroscopy support a two-step Na-storage mechanism in which [CuO4] sites bind first, followed by C=O/C=N ligand sites.
Caveat: DFT potentials only approximately align with experimental plateaus; model cell simplifications are not fully detailed in supplied text.
6 · Results and Discussion · Figure 4 · Linked to 5 structured results
Cu-TTPQ charge storage has mixed diffusion and pseudocapacitive character, with capacitive contribution increasing to 81.5% at 1.6 mV s-1.
Caveat: Kinetic analysis is based on CV peak scaling; no raw numerical data are supplied beyond plotted/labelled values.
6 · Results and Discussion · Figure 3g; Figure S30 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu-DDQP | Cu-DDQP; DDQP = dibenzo[a,c]dibenzo[5,6:7,8]quinoxalino[2,3-i]phenazineCuO4 coordination units; mixed Cu oxidation state by XPS · DDQP pyrazine-based linker generated in situ from 8OH-TPQ; C=N redox-active motif | 2D · PristineIsoreticular 2D c-MOF analogue with hexagonal single-pore framework and AA stacking; nanoparticle morphology. | 2-4 · Results and Discussion · Figure 1c; Figure 2b |
| Cu-TBPQ | Cu-TBPQ; TBPQ = tetrabenzo[a,c,l,n]pentacene-10,21-dioneCuO4 coordination units; mixed Cu oxidation state by XPS · TBPQ quinone-based linker generated in situ from 8OH-TPAQ; C=O redox-active motif | 2D · PristineIsoreticular 2D c-MOF analogue with hexagonal single-pore framework and AA stacking; nanoparticle morphology. | 2-4 · Results and Discussion · Figure 1b; Figure 2a |
| Cu-TTPQ | Cu-TTPQ; TTPQ = tetrabenzo-5,7,12,14-tetraaza-6,13-pentacenequinoneCuO4 coordination units; Cu centres predominantly Cu(II) by XANES/XPS · TTPQ linker generated in situ from flexible 8OH-TPPQ; quinone C=O and pyrazine C=N redox-active groups | 2D · PristineLayered conjugated 2D c-MOF, sql-AA stacking, PM6 Pawley-refined cell, hexagonal single-pore framework stacked along c-axis; nanorod morphology. | 2-4 · Results and Discussion · Figure 1; Figure 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu-DDQP SIB cathode composite electroderesearch_0679__mat__mat_cu_ddqp | Electrode · Composite Sample · Composite | Electrode made from active material, acetylene black and PVDF around 6:3:1; active material around 60%.aluminium foil · active-material loading around 0.5 mg cm-2 | S8 · Section 3 Electrochemical Measurements |
| Cu-DDQP pellet for two-probe conductivityresearch_0679__mat__mat_cu_ddqp | Pellet · Pristine Control · Pristine Framework | Powder pellet contacted by two gold wires fixed with silver colloid.gold wires/silver colloid contacts · 0.343 mm in Table S2 | S25 · Section 14 Electrical Conductivity Measurements · Figure S23; Table S2 |
| Cu-DDQP black powderresearch_0679__mat__mat_cu_ddqp | Powder · Pristine Control · Pristine Framework | As-synthesised black powder after filtration, washing and vacuum drying. | S6 · Section 2.2 Synthesis of 2D c-MOFs · Scheme S4 |
| Cu-TBPQ SIB cathode composite electroderesearch_0679__mat__mat_cu_tbpq | Electrode · Composite Sample · Composite | Electrode made from active material, acetylene black and PVDF around 6:3:1; active material around 60%.aluminium foil · active-material loading around 0.5 mg cm-2 | S8 · Section 3 Electrochemical Measurements |
| Cu-TBPQ pellet for two-probe conductivityresearch_0679__mat__mat_cu_tbpq | Pellet · Pristine Control · Pristine Framework | Powder pellet contacted by two gold wires fixed with silver colloid.gold wires/silver colloid contacts · 0.296 mm in Table S2 | S25 · Section 14 Electrical Conductivity Measurements · Figure S23; Table S2 |
| Cu-TBPQ black powderresearch_0679__mat__mat_cu_tbpq | Powder · Pristine Control · Pristine Framework | As-synthesised black powder after centrifugation, washing and vacuum drying. | S6 · Section 2.2 Synthesis of 2D c-MOFs · Scheme S3 |
| Cu-TTPQ SIB cathode composite electroderesearch_0679__mat__mat_cu_ttpq | Electrode · Composite Sample · Composite | Electrode made from active material, acetylene black and PVDF around 6:3:1; active material around 60%.aluminium foil · active-material loading around 0.5 mg cm-2 | S8 · Section 3 Electrochemical Measurements |
| Cu-TTPQ and Cu-TTPQ-nNa computational modelsresearch_0679__mat__mat_cu_ttpq | Model · Model System · Model | DFT-optimised structures for sodium insertion and redox-potential calculations. | 6-7 · Results and Discussion · Figure 4c,d; Table S6 |
| Cu-TTPQ pellet for two-probe conductivityresearch_0679__mat__mat_cu_ttpq | Pellet · Target Sample · Pristine Framework | Powder pellet contacted by two gold wires fixed with silver colloid.gold wires/silver colloid contacts · 0.266 mm in Table S2 | S3, S25 · Section 1; Section 14 · Figure S23; Table S2 |
| Cu-TTPQ black powderresearch_0679__mat__mat_cu_ttpq | Powder · Target Sample · Pristine Framework | As-synthesised black powder after filtration, washing and vacuum drying. | S5 · Section 2.2 Synthesis of 2D c-MOFs · Scheme S2 |