Meng Z., Stolz R.M., De Moraes L.S. et al. · Angewandte Chemie - International Edition · 2024 · e202404290
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 pristine Cu3(C6O6)2 MOF device detects NH3, H2S and NO at ppb-level theoretical LODs with distinct response signs and kinetics.
Caveat: NH3 LOD differs between main article (14 ppb) and SI Figure S6 (8.3 ppb); both are extracted.
4 · Electrical Response · Linked to 6 structured results
Cu3(C6O6)2 shows gas-identity-dependent electrical conductance and magnetic modulation for NH3, H2S and NO.
Caveat: Magnetic modulation is subtle exchange-coupling modulation rather than on/off spin switching.
8 · Conclusions · Linked to 6 structured results
H2S binds through S to Cu, reduces Cu(II) to Cu(I), forms sulfide/polysulfide/CuSH species and partly disrupts the conjugated framework, reducing conductivity and reversibility.
Caveat: pXRD suggests bulk crystallinity largely remains, so authors infer surface/minor-fraction change.
7 · Spectroscopic Assessment · Linked to 5 structured results
NH3 response is attributed to dehydration, H-bonding and coordination to Cu, causing a resistance increase with good reversibility.
Caveat: Exact molecules in the MOF channel were not definitively assigned by MicroED.
8 · Conclusions · Linked to 5 structured results
NO likely undergoes ligand-centred radical interaction with the C6O6 ligand, shifting electron density and increasing conductivity.
Caveat: Mechanism is inferred from spectroscopy rather than direct structure of a NO adduct.
7 · Spectroscopic Assessment · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu3(C6O6)2 conductive metal-organic frameworkBrowse family: Cu₃(C₆O₆)₂ (Cu–THQ / Cu–HHB) | Cu3(C6O6)2Cu nodes / adjacent Cu(II) cations in 2D layers · tetrahydroxyquinone-derived C6O6 ligand scaffold | 2D · Pristine2D layered honeycomb network with O-decorated 1D channels; monoclinic C2/m by MicroED | 2 · Material and Structure · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu3(C6O6)2 chemiresistive device on gold IDEresearch_0876__mat__mat_cu3_c6o6_2 | Electrode · Target Sample · Pristine Framework | aqueous MOF suspension drop-cast and air-dried about 18 hgold interdigitated electrodes with 5 um gaps (G-IDEAU5) · not reported | S5 · Chemiresistive Tests |
| Cu3(C6O6)2/KBr DRIFTS blendresearch_0876__mat__mat_cu3_c6o6_2 | Powder · Target Sample · Pristine Framework | 0.5 mg MOF mixed with KBr and dried under N2 before gas dosingdry KBr bed/blend in DRIFTS sample cup | S23 · DRIFTS |
| gas-exposed Cu3(C6O6)2 EPR tube samplesresearch_0876__mat__mat_cu3_c6o6_2 | Powder · Target Sample · Guest Loaded | about 2 mg MOF purged N2 1 h, analyte 1 h, then N2 10 minquartz EPR tube | S21 · EPR Spectroscopy |
| H2S-exposed Cu3(C6O6)2 powder, 1% for 6 hresearch_0876__mat__mat_cu3_c6o6_2 | Powder · Target Sample · Guest Loaded | pristine powder purged with H2S (1% in N2) for 6 h | S4-S5 · pXRD / elemental analysis |
| NH3-exposed Cu3(C6O6)2 powder, 1% for 6 hresearch_0876__mat__mat_cu3_c6o6_2 | Powder · Target Sample · Guest Loaded | pristine powder purged with NH3 (1% in N2) for 6 h | S4-S5 · pXRD / elemental analysis |
| NO-exposed Cu3(C6O6)2 powder, 1% for 6 hresearch_0876__mat__mat_cu3_c6o6_2 | Powder · Target Sample · Guest Loaded | pristine powder purged with NO (1% in N2) for 6 h | S4-S5 · pXRD / elemental analysis |
| pristine Cu3(C6O6)2 powderresearch_0876__mat__mat_cu3_c6o6_2 | Powder · Target Sample · Pristine Framework | dark-blue powder dried under house vacuum for 12 h | S3 · Synthesis of Cu3(C6O6)2 |