Wang W.-Q., Xie H., Cheng F. et al. · Chemical Engineering Journal · 2025 · 169190
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.
I2@FeTHQ provides sensitive non-enzymatic AA sensing over a broad range with low LOD, fast response, selectivity, and reusable/reproducible electrodes.
Caveat: Some selectivity bar values are visual estimates from Figure 2f.
5 · Results · Figure 2 · Linked to 6 structured results
The filter-paper composite enables wet adhesion, fast sweat uptake, stable bending performance, and practical wireless sweat AA monitoring.
Caveat: Human volunteer sample size is small and application data are proof-of-concept.
6-8 · Results · Figure 4-5 · Linked to 6 structured results
Vapour-phase iodine doping preserves the FeTHQ framework crystallographic pattern and nanosphere morphology while introducing non-crystalline polyiodide guests.
Caveat: No CIF was supplied in the assignment; phase assignment relies on reported PXRD/SEM/spectroscopy.
2-3 · Results · Figure 1 · Linked to 5 structured results
DFT supports that iodine changes the DOS/Fermi level and lowers the initial AA adsorption step, consistent with improved electroconductivity and AA response.
Caveat: Computational details are reported, but numerical free-energy points are mainly read from text summaries and the figure.
5 · Results · Figure 3e-i · Linked to 4 structured results
Vapour-phase diffusion gives more homogeneous iodine doping than physical grinding and remains robust on scaled-up partitioned samples.
Caveat: Bulk homogeneity CV/EIS values are mostly graphical/qualitative rather than tabulated.
2 · Results · Figure S9-S17 · Linked to 4 structured results
Iodine doping improves FeTHQ charge transport by redox-state modulation, increasing ligand radical character and changing Fe redox balance rather than by non-specific ion effects.
Caveat: Carrier-density values are described qualitatively; exact carrier density is not reported in the extracted text.
4 · Results · Figure S23-S24; Table S3 · Linked to 6 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| FeTHQ and I2@FeTHQ DFT models | Not specifiedFe · THQ framework model with/without iodine | 3D · Model SystemPeriodic DFT model systems for DOS and AA oxidation mechanism. | S6 · Computational method |
| MOF precursor controls | Not specifiedFe salt control where applicable · THQ control where applicable | unknown · Model SystemNon-framework precursor controls used to test iodine-doping effects. | S17 · Figure S21-S22 |
| FeTHQ | Not specifiedFe · tetrahydroxy-1,4-quinone hydrate / tetrahydroxy-1,4-benzoquinone hydrate (THQ) | 3D · Pristine3D conductive MOF; PXRD peaks assigned to (100), (200), and (300) facets. | 2 · Results and discussion |
| FeTHQ/FP | Not specifiedFe · THQ grown on hydroxylated filter paper | 3D · CompositeComposite of FeTHQ grown in situ on filter paper. | S5 · Experiments |
| I2@FeTHQ | Not specifiedFe · tetrahydroxy-1,4-quinone hydrate / THQ | 3D · PristineIodine-doped/guest-loaded FeTHQ; polyiodide species assigned by Raman/XPS and no crystalline iodine peak in PXRD. | 2 · Results and discussion |
| I2@FeTHQ/FP | Not specifiedFe · THQ with iodine-doped FeTHQ on filter paper | 3D · CompositeWearable paper composite containing iodine-doped FeTHQ nanocrystals on filter-paper fibres. | 6 · Results and discussion |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| FeTHQ DFT modelresearch_0891__mat__computational_models | Model · Model System · Model | periodic DFT model | 5 · Results and discussion |
| FeTHQ/FPresearch_0891__mat__fethq_fp | Thin Film · Composite Component · Composite | FeTHQ grown in presence of filter paperhydroxylated laboratory filter paper | S5 · Synthesis of I2@FeTHQ/FP |
| FeTHQresearch_0891__mat__fethq | Powder · Pristine Control · Pristine Framework | centrifuged, washed, vacuum dried powder | S3 · Synthesis of FeTHQ |
| I2@FeTHQ-1 to I2@FeTHQ-5research_0891__mat__i2_fethq | Powder · Target Sample · Guest Loaded | 10-fold scaled-up iodine-vapour synthesis partitioned into five parts | S3-S4 · Bulky sample preparation |
| I2@FeTHQ DFT modelresearch_0891__mat__computational_models | Model · Model System · Model | periodic DFT model with iodine | 5 · Results and discussion |
| I2@FeTHQ/FP paper sensorresearch_0891__mat__i2_fethq_fp | Thin Film · Composite Sample · Composite | iodine-doped FeTHQ grown on filter paper; screen-printed with Ag/AgCl conductive ink for usehydroxylated laboratory filter paper · 20 x 20 cm2 demonstrator; 1 cm x 2.5 cm sensor slices | 6-7 · Results and discussion |
| I2@FeTHQ/IEresearch_0891__mat__i2_fethq | Electrode · Composite Sample · Composite | I2@FeTHQ integrated onto Au interdigital electrodeAu interdigital electrode | 6 · Results and discussion |
| I2@FeTHQ/ITO working electroderesearch_0891__mat__i2_fethq | Electrode · Target Sample · Composite | Nafion-containing ink drop-cast and driedindium tin oxide (ITO) glass | S5 · Preparation of working electrode |
| I2@FeTHQ, 20 C 6 hresearch_0891__mat__i2_fethq | Powder · Target Sample · Guest Loaded | iodine vapour doped FeTHQ selected after optimisation | 2 · Results and discussion |
| I2@FeTHQ/SPEresearch_0891__mat__i2_fethq | Electrode · Composite Sample · Composite | I2@FeTHQ integrated onto commercial SPEcommercial screen-printed carbon electrode | 6 · Results and discussion |
| I2@FeTHQ temperature seriesresearch_0891__mat__i2_fethq | Powder · Target Sample · Guest Loaded | iodine vapour at 20, 40, and 60 C | S3 · Synthesis of I2@FeTHQ |
| I2@FeTHQ reaction-time seriesresearch_0891__mat__i2_fethq | Powder · Target Sample · Guest Loaded | iodine vapour for 1, 3, 6, 9, and figure-labelled 12 h | S8-S9 · Figure S4-S6 |
| I2+FeTHQ physical-grinding seriesresearch_0891__mat__i2_fethq | Powder · Target Sample · Doped | solid iodine physically ground with FeTHQ | S4 · Physical grinding method |
| THQ/Fe precursor controls before and after iodine treatmentresearch_0891__mat__controls_precursors | Unknown · Model System · Model | precursor controls fabricated/tested analogouslyITO for electrochemical tests | S17 · Figure S21-S22 |
| FeTHQ treated with redox/non-redox speciesresearch_0891__mat__fethq | Powder · Pristine Control · Doped | FeTHQ treated with I2, Br2, NaIO4, H2O2, O3, NaCl, NaBr, NaNO3, or KI | S4 · Chemical species studies |