Yao M.-S., Lv X.-J., Fu Z.-H. et al. · Angewandte Chemie - International Edition · 2017 · 16510-16514
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 20 nm Cu3(HHTP)2-10C thin-film sensor gives the strongest reported first-hand NH3 sensing performance in this paper, with 129% response to 100 ppm NH3 and 1.36 min response time.
Caveat: The broad claim 'among the highest' is benchmarked against literature in SI Table S1, but literature rows are not extracted as first-hand data.
main p.4, article p.16513 · Summary · Figure 3 and Table S1 · Linked to 4 structured results
Cu3(HHTP)2-10C sensors retain most of their NH3 response after about 3 months.
main p.3, article p.16512 · Stability discussion · Figure S10 · Linked to 1 structured result
Cu3(HHTP)2 retains its crystal structure after saturated NH3 exposure/contact.
Caveat: The text points to Supporting Information Figure S7b, while the SI caption listing before/after NH3 PXRD is Figure S8.
main p.3, article p.16512 · Gas-sensing mechanism · Figure S8 · Linked to 1 structured result
The Cu3(HHTP)2-xC thin films are dense, continuous, crystalline and preferentially c-axis oriented.
Caveat: Orientation is inferred from peeled film fragments and SAED patterns.
main p.2, article p.16511 · Morphology and orientation · Figure 2 · Linked to 3 structured results
The room-temperature conductivity of Cu3(HHTP)2-40C is high enough to support chemiresistive gas sensing.
Caveat: Conductivity was measured by a two-probe method and described as estimated.
main p.2, article p.16511 · Gas-sensing motivation · Figure S6 · Linked to 3 structured results
Thinner Cu3(HHTP)2 films show faster NH3 response and recovery because shorter diffusion lengths and accessible active sites reduce diffusion barriers.
Caveat: Some cycle-dependent values are taken from figure labels; response time is not perfectly monotonic across all xC samples.
main p.3, article p.16512 · Thickness-dependent sensing · Figure 3e and Figure S9 · Linked to 4 structured results
Spray layer-by-layer liquid-phase epitaxy enables controllable Cu3(HHTP)2 nanofilm growth with about 2 nm thickness increment per cycle.
Caveat: Spray volume/rate and deposition atmosphere are not specified in the SI.
main p.2, article p.16511 · Thin-film growth · Figure 2c · Linked to 3 structured results
NH3 selectively increases resistance by interacting strongly with Cu sites in p-type Cu3(HHTP)2 and reducing hole carrier concentration.
Caveat: The authors state the exact sensing mechanism is still under investigation.
main p.3, article p.16512 · Gas-sensing mechanism · Figure 4 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu3(HHTP)2 conductive metal-organic frameworkBrowse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu3(HHTP)2Cu ions coordinated to HHTP ligands in two-dimensional hexagonal layers. · HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene | 2D · PristineTwo-dimensional hexagonal layers stacked along the c-axis in a slipped-parallel AB stacking model; honeycomb-like porous structure with one-dimensional channels. | main p.1, article p.16510 · Introduction and Figure 1 discussion · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu3(HHTP)2-10C thin-film chemiresistorresearch_0115__mat__cu3_hhtp2 | Electrode · Target Sample · Pristine Framework | Pristine thin film directly used as a chemiresistive sensor under 5 V bias.Si/SiO2, sapphire or glass substrate with Au interdigital electrodes; exact substrate for Figure 3 sensor not specified. · About 20 nm | main p.2-p.3, article p.16511-p.16512 · Gas-sensing performance · Figure 3 |
| Cu3(HHTP)2-20C thin-film chemiresistorresearch_0115__mat__cu3_hhtp2 | Electrode · Target Sample · Pristine Framework | Pristine thin film used for thickness-dependent NH3 sensing.Au-interdigitated sensor substrate; exact substrate not specified. · About 40 nm from 2 nm per cycle trend. | SI p.12 · Figure S9 caption · Figure S9 |
| Cu3(HHTP)2-30C thin-film chemiresistorresearch_0115__mat__cu3_hhtp2 | Electrode · Target Sample · Pristine Framework | Pristine thin film used for thickness-dependent NH3 sensing.Au-interdigitated sensor substrate; exact substrate not specified. · About 60 nm from 2 nm per cycle trend. | SI p.12 · Figure S9 caption · Figure S9 |
| Cu3(HHTP)2-40C thin-film deviceresearch_0115__mat__cu3_hhtp2 | Electrode · Target Sample · Pristine Framework | Pristine thin film measured by two-probe I-V at 200-300 K and also used for thickness-dependent sensing.Au-electrode device for conductivity; SEM/AFM shown for top and cross-sectional film. · About 80 nm from 2 nm per cycle trend. | SI p.10 · Figure S6 caption and text · Figure S6 |
| Cu3(HHTP)2-50C thin filmresearch_0115__mat__cu3_hhtp2 | Thin Film · Target Sample · Pristine Framework | Pristine thin film characterised by PXRD, TEM/SAED, AFM and thickness-dependent NH3 sensing.Quartz for UV/Vis monitoring and unspecified substrate for peeled TEM fragments; sensor substrate for Figure S9. · About 100 nm | main p.2, article p.16511 · Structure and orientation · Figure 2 |
| Cu3(HHTP)2-xC layer-by-layer thin-film seriesresearch_0115__mat__cu3_hhtp2 | Thin Film · Target Sample · Pristine Framework | Spray layer-by-layer liquid-phase epitaxy with ethanol rinsing and N2 drying.Functionalized sapphire, glass, Si/SiO2, quartz, Si/Au or Au-interdigitated substrates depending on measurement. · About 2 nm thickness increment per growing cycle; xC denotes x growing cycles. | main p.2, article p.16511 · Thin-film preparation and morphology · Figure 2 |
| NH3-exposed Cu3(HHTP)2research_0115__mat__cu3_hhtp2 | Thin Film · Target Sample · Guest Loaded | Cu3(HHTP)2 after exposure or adsorption of NH3.Thin-film sensor substrate for FTIR/UPS mechanism measurements; powder control also checked by PXRD. · 10C thin film for UPS; exact film for FTIR not separately specified. | main p.3, article p.16512 · Gas-sensing mechanism · Figure 4 |
| Cu3(HHTP)2 powderresearch_0115__mat__cu3_hhtp2 | Powder · Pristine Control · Pristine Framework | Solvothermally prepared powder; also drop-coated as a thick-film gas sensor control. | SI p.2 and p.11 · Preparation of Cu3(HHTP)2 powders; Figure S8 · Figures S7-S8 |