Zhao Q., Li S.-H., Chai R.-L. et al. · ACS Applied Materials and Interfaces · 2020 · 7504-7509
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 cMOF-modified GC electrode is an electrochemical paraquat sensor with LOD below the cited EPA limit and a 0.2-5 uM linear range.
Caveat: Application was tested in paraquat solution; the database should treat the electrode as a composite/device sample rather than a pristine cMOF transport sample.
7507 · Results and Discussion; Conclusions · Figure 4; Figure S26 · Linked to 5 structured results
The experimental PXRD pattern agrees with an eclipsed stacking model and not with the staggered model.
Caveat: Structure assignment is based on PXRD fitting/simulation rather than reported single-crystal diffraction.
7505 · Results and Discussion · Figure 1c-e · Linked to 4 structured results
XPS supports mixed Cu(I)/Cu(II) and catecholate/semiquinonate states in the CuO4 units, which the authors connect to possible redox chemistry and negative CuO4 units.
Caveat: Charge states are inferred from deconvoluted XPS peak assignments; no direct oxidation-state quantification beyond areas is supplied.
7506 · Results and Discussion · Figure 2c; Scheme S2 · Linked to 5 structured results
The larger grain-boundary activation energy indicates that charge hopping between grain boundaries dominates electrical conduction.
Caveat: The equivalent-circuit interpretation depends on fitting two partially overlapped semicircles.
7506 · Results and Discussion · Figure 3c; Table S6 · Linked to 4 structured results
The cMOF shows Arrhenius-type temperature-dependent conductivity and semiconductor-like behaviour.
Caveat: Conductivity is measured on compressed powder/tablet; grain-boundary effects are significant.
7506 · Results and Discussion · Figure 3b; Figures S19-S20 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| glassy carbon electrode | C | unknown · Model SystemCommercial polished GC electrode used as bare-electrode control. | S-20 · Electrical properties of the MOF |
| 2,3,7,8,12,13-hexahydroxyl truxene | C27H18O6 neutral linker; HRMS calculated for C27H17O6 437.1025, found 437.1028Truxene-based hexahydroxyl ligand | 0D · Model SystemOrganic precursor confirmed by 1H NMR, 13C NMR, and HRMS. | 7505 · Results and Discussion · Figures S1-S3 |
| truxene-Cu cMOF | (C27H12O6)2Cu3 unit proposed from EDS/calculated compositionCu ions in CuO4 catecholate/semiquinonate coordination environments; XPS indicates mixed Cu(I)/Cu(II) · 2,3,7,8,12,13-hexahydroxyl truxene | 2D · PristineHexagonal 2D cMOF; PXRD fitted with a = b = 26.56 Angstrom, c = 3.22 Angstrom, alpha = beta = 90 deg, gamma = 120 deg; eclipsed stacking agrees with experimental PXRD. | 7504-7505 · Abstract; Results and Discussion · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| bare GC electroderesearch_0291__mat__m_glassy_carbon | Electrode · Pristine Control · Model | Polished with 1.5 um, 500 nm, and 50 nm Al2O3; rinsed; activated by CV scans in sulfuric acid; ultrasonically washed and dried in N2.glassy carbon electrode · 3 mm diameter working electrode | S-20 · Electrical properties of the MOF · Figure 4 |
| truxene-Cu cMOF-modified GC electroderesearch_0291__mat__m_truxene_cu_cmof | Electrode · Composite Sample · Composite | 1.0 mg truxene-Cu MOF dispersed in 0.5 mL water and 0.5 mL isopropanol; 5 uL suspension dropped on prepared GC surface and dried at room temperature for 3 h.polished glassy carbon electrode, 3 mm diameter | S-20 · Electrical properties of the MOF · Figure 4 |
| 2,3,7,8,12,13-hexahydroxyl truxene linkerresearch_0291__mat__m_hexahydroxyl_truxene | Powder · Pristine Control · Model | Grey powder product from BBr3 demethylation of hexamethoxy-truxene. | 7507 · Experimental Section · Scheme S1; Figures S1-S3 |
| truxene-Cu cMOF black powderresearch_0291__mat__m_truxene_cu_cmof | Powder · Target Sample · Pristine Framework | Interfacial film collected, washed, centrifuged to black powder, evacuated at room temperature, then heated at 85 deg C for 24 h to remove acetone. | 7507 · Experimental Section |
| pressed truxene-Cu cMOF tabletresearch_0291__mat__m_truxene_cu_cmof | Pellet · Target Sample · Pristine Framework | Compressed sample/tablet measured by vernier caliper and contacted between two stainless steel electrodes for LSV and EIS.two stainless steel electrodes · L = 1.88 x 10^-3 m; diameter D = 5.07 x 10^-3 m; surface area S = 2.02 x 10^-5 m2 | S-20-S-21 · Electrical properties of the MOF · Figure S17 |