Chen C., Shan Z., Li B. et al. · Small · 2025 · 2409786
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 work demonstrates pristine conductive MOF electromagnetic-wave absorbers without pyrolysis or guest-doping post-treatment.
Caveat: The measured absorber rings are MOF/paraffin composites for EMW testing, but the active MOF framework is pristine rather than carbonised or guest-loaded.
main p.2 · Introduction · Linked to 4 structured results
Increasing filler content above the optimum reduces EMW performance because excessive conductivity induces a skin effect and worsens impedance matching.
Caveat: Higher-loading RL values are primarily from figure annotations in the SI.
main p.5 · 2.2.1 Efficient Electromagnetic Wave Absorption Performance · Figures S12-S13 · Linked to 4 structured results
The 1D linear topology and ribbon-like morphology of CuTBTT-1D improve charge transport, conductivity and EMW absorption relative to CuTBTT-2D.
Caveat: Conductivity values for CuTBTT-2D were estimated from Figure S18 rather than reported in text.
main p.3 · 2.2.1 Efficient Electromagnetic Wave Absorption Performance · Figure 3 · Linked to 6 structured results
Introducing TBTT polarised groups creates charge redistribution around Cu and S and abundant polarisation sites in both CuTBTT frameworks.
Caveat: The causal statement combines experimental figures and DFT charge-density maps; atom-resolved charge-transfer tables are computational.
main p.7-8 · Contribution of Conduction and Polarization Loss · Figure 5f; Figure S26 · Linked to 4 structured results
CuTBTT-1D EMW absorption is dominated by dielectric loss, with polarisation relaxation stronger than conduction loss after 4 GHz.
Caveat: Loss-partition values are mainly presented graphically; the extracted dominance statement is qualitative.
main p.6-7 · Mechanism Analysis of Electromagnetic Wave Absorption · Figures 4-5 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| CuTBTT-1D | Not specifiedCu secondary building units; each SBU connects to two adjacent SBUs and forms four coordination bonds. · TBTT-8OH secondary building unit containing thieno(3,2-b)thiophene polarised groups | 1D · PristinePristine conductive MOF with 1D linear coordination mode and ribbon-like molecular-wire morphology. | main p.2 · 2.1.1 Synthesis and Crystal Structure Analysis · Figure 1a |
| CuTBTT-2D | Not specifiedCu secondary building units; SBUs connect to adjacent SBUs on four sides and form eight coordination bonds. · TBTT-8OH secondary building unit containing thieno(3,2-b)thiophene polarised groups | 2D · PristinePristine conductive MOF with 2D sql topology and nanosheet morphology. | main p.2 · 2.1.1 Synthesis and Crystal Structure Analysis · Figure 1a |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Pristine CuTBTT-1D powder/ribbon networkresearch_0183__mat__cutbtt_1d | Powder · Target Sample · Pristine Framework | As-synthesised pristine MOF used for structure, porosity, microscopy, XPS, TGA, DFT comparison and conductivity/EMW filler studies. | main p.2 · 2.1.3 Microscopic Morphology Analysis · Figure 2 |
| DFT model of CuTBTT-1Dresearch_0183__mat__cutbtt_1d | Model · Model System · Model | VASP geometry-optimised model.not_applicable · Periodic/truncated computational model. | SI p.18 · Theoretical calculation · Figure S19 |
| CuTBTT-1D-10% paraffin ringresearch_0183__mat__cutbtt_1d | Pellet · Composite Sample · Composite | 10% CuTBTT-1D mixed with paraffin and pressed into standard toroidal rings.Variable simulated absorber thickness in RL plots; toroidal specimen thickness 3.00 mm for VNA measurement. | SI p.13 · 4. Performance analysis · Figure S11 |
| CuTBTT-1D-15% paraffin ringresearch_0183__mat__cutbtt_1d | Pellet · Composite Sample · Composite | 15% CuTBTT-1D mixed with paraffin and pressed into standard toroidal rings.Best reported absorber thickness 2.2 mm; toroidal specimen thickness 3.00 mm for VNA measurement. | main p.3 · 2.2.1 Efficient Electromagnetic Wave Absorption Performance · Figure 3b,e,g,h |
| CuTBTT-1D-20% paraffin ringresearch_0183__mat__cutbtt_1d | Pellet · Composite Sample · Composite | 20% CuTBTT-1D mixed with paraffin and pressed into standard toroidal rings.Figure S12 marks 1.6 mm for the reported EAB window. | SI p.14 · 4. Performance analysis · Figure S12 |
| CuTBTT-1D-25% paraffin ringresearch_0183__mat__cutbtt_1d | Pellet · Composite Sample · Composite | 25% CuTBTT-1D mixed with paraffin and pressed into standard toroidal rings.Figure S13 marks 3.5 mm for the reported EAB window. | SI p.15 · 4. Performance analysis · Figure S13 |
| CuTBTT-1D-30% paraffin ringresearch_0183__mat__cutbtt_1d | Pellet · Composite Sample · Composite | 30% CuTBTT-1D mixed with paraffin and pressed into standard toroidal rings.Variable simulated absorber thickness in RL plots. | SI p.15 · 4. Performance analysis · Figure S13 |
| CuTBTT-1D-5% paraffin ringresearch_0183__mat__cutbtt_1d | Pellet · Composite Sample · Composite | 5% CuTBTT-1D mixed with paraffin and pressed into standard toroidal rings.Variable simulated absorber thickness in RL plots; toroidal specimen thickness 3.00 mm for VNA measurement. | SI p.3 · Electromagnetic measurements · Figure S10 |
| Pristine CuTBTT-2D nanosheetsresearch_0183__mat__cutbtt_2d | Powder · Pristine Control · Pristine Framework | As-synthesised pristine MOF used as the 2D topology comparator. | main p.2 · 2.1.3 Microscopic Morphology Analysis · Figure 2 |
| DFT model of CuTBTT-2Dresearch_0183__mat__cutbtt_2d | Model · Model System · Model | VASP geometry-optimised model.not_applicable · Periodic/truncated computational model. | SI p.20 · Theoretical calculation · Figure S21 |
| CuTBTT-2D-15% paraffin ringresearch_0183__mat__cutbtt_2d | Pellet · Composite Sample · Composite | 15% CuTBTT-2D mixed with paraffin and pressed into standard toroidal rings.Figure 3d marks 4.0 mm for the weak EAB window. | main p.5 · 2.2.1 Efficient Electromagnetic Wave Absorption Performance · Figure 3a,d,f |
| CuTBTT-2D-25% paraffin ringresearch_0183__mat__cutbtt_2d | Pellet · Composite Sample · Composite | 25% CuTBTT-2D mixed with paraffin and pressed into standard toroidal rings.Figure S9 marks 3.2 mm for the reported EAB window. | SI p.11 · 4. Performance analysis · Figure S9 |
| CuTBTT-2D-5% paraffin ringresearch_0183__mat__cutbtt_2d | Pellet · Composite Sample · Composite | 5% CuTBTT-2D mixed with paraffin and pressed into standard toroidal rings.Variable simulated absorber thickness in RL plots. | SI p.10 · 4. Performance analysis · Figure S8 |