More M.S., Bodkhe G.A., Singh F. et al. · Synthetic Metals · 2023 · 117357
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.
PCA of Zn-HHTP gas responses discriminates CO, NH3 and SO2, supporting possible electronic-nose use.
Caveat: PCA was based on three gases and three samplings; PC1 variance differs between body text and Fig. 4f axis.
5 · 4.2. Multivariate Analysis (Principal Component Analysis) · Fig. 4f · Linked to 3 structured results
The authors state the FET sensor is more sensitive than the resistive sensor because of FET amplification.
Caveat: Main text reports a 20 ppm Chem-FET lower detection limit and a 10 ppm experimental chemiresistive lower detection limit, so 'more sensitive' is accepted as the authors' claim rather than independently reconciled.
8 · 4.4. Chem-FET sensing · Fig. 5c,e · Linked to 3 structured results
Zn-HHTP is assigned as a Zn-based 2D pi-d conjugated conductive MOF/coordination polymer with HHTP linker.
Caveat: No CIF or SI structural files were supplied; structure assignment is based on main-text PXRD, FTIR and EDS.
2 · Introduction · Linked to 3 structured results
The micropore size range of about 0.5-1.2 nm is proposed to assist selective CO adsorption and enhance CO sensing.
Caveat: Selectivity claim is supported by gas-response data but not by direct CO adsorption selectivity measurements in the supplied main text.
3 · 3. Results and discussion · Fig. 2d · Linked to 3 structured results
For chemiresistive sensing, electron-donating CO increases resistance of p-type Zn-HHTP by decreasing effective hole-carrier conduction.
4 · 4.1. Gas sensor fabrication and measurement · Fig. 4a · Linked to 3 structured results
The authors attribute conductivity/charge transfer in Zn-HHTP to electron delocalisation associated with Zn+/Zn2+ coexistence and the pi-d conjugated structure.
Caveat: Mechanistic interpretation is inferred from spectroscopy and prior literature rather than a direct transport mechanism measurement.
3 · 3. Results and discussion · Fig. 3d · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Zn-HHTP metal-organic frameworkBrowse family: Zn–HHTP family | Zn-HHTP / zinc-hexahydroxytriphenylene conductive coordination polymerZn2+ metal centres; text also discusses coexistence of Zn+/Zn2+ contributing to charge delocalisation · 3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · Pristine2D pi-d conjugated planar honeycomb-like porous framework stacked along the c axis; PXRD indexed with (200), (210) and (220) reflections in Fig. 1b. | 2 · Introduction |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Zn-HHTP on interdigitated Au electrodes on Si/SiO2research_0153__mat__m_znhhtp | Electrode · Target Sample · Pristine Framework | Zn-HHTP suspension in acetone drop-cast across a 3 um IDE gap; used as chemiresistive and Chem-FET sensor.boron-doped Si/SiO2 substrate with Cr/Au interdigitated electrodes | 3 · 2.3. Substrate preparation and development of sensing device · Fig. 5d |
| as-synthesised Zn-HHTP blue powderresearch_0153__mat__m_znhhtp | Powder · Target Sample · Pristine Framework | Filtered, washed with deionised water, acetone and ethanol, then vacuum dried at 60 C before analysis. | 3 · 2.2. Synthesis of 2D Zn-HHTP · Fig. 1a |