Campbell M.G., Sheberla D., Liu S.F. et al. · Angewandte Chemie - International Edition · 2015 · 4349-4352
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.
Drop-cast Cu3(HITP)2 devices are reversible chemiresistive ammonia sensors that detect 0.5 ppm ammonia and recover baseline current.
Caveat: The lower detection limit below 0.5 ppm was not accessible with their apparatus.
main p.3, article p.4351 · Sensing discussion · Fig. 4 · Linked to 3 structured results
Replacing nitrogen with air and increasing humidity to about 60% has only a small detrimental effect on 5 ppm ammonia response.
Caveat: Response magnitudes are figure-axis estimates from bar heights; exact data table is not provided.
main p.3, article p.4351 · Sensing discussion · Fig. S11 · Linked to 5 structured results
The Cu 2p XPS features are attributed to inherent mixed-valent Cu centers in Cu3(HITP)2 rather than co-deposited Cu metal.
Caveat: Assignment relies on comparison of XPS/PXRD signatures rather than direct valence quantification.
SI p.S5 · Discussion of Cu mixed-valency in Cu3(HITP)2 · Figs. S3-S6 · Linked to 3 structured results
Cu3(HITP)2 is an electrically conductive 2D MOF with pressed-pellet conductivity of 0.2 S cm-1.
Caveat: Conductivity is a two-point pressed-pellet value; intrinsic single-crystal or in-plane conductivity is not measured.
main p.1, article p.4349 · Abstract · Linked to 2 structured results
The metal node strongly affects ammonia response: Cu3(HITP)2 detects ammonia, whereas isostructural Ni3(HITP)2 shows no observable response under the same conditions.
Caveat: Mechanistic origin of the different Cu/Ni response is not fully elucidated in this paper.
main p.3, article p.4351 · Sensing discussion · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu3(HITP)2Browse family: Cu₃(HITP)₂ / Cu–HITP | Cu3(C18H12N6)2; HITP = 2,3,6,7,10,11-hexaiminotriphenyleneCopper sites in o-phenylenediimine-linked 2D sheets; XPS interpreted as mixed Cu(I)/Cu(II) valency. · HITP, generated from 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP.6HCl). | 2D · PristineHexagonal 2D framework isostructural with Ni3(HITP)2, with slipped-parallel stacking of 2D sheets. | main p.1, article p.4349 · Abstract and introduction · Fig. 1 |
| Cu(opd)2 control complex/crude product | Cu(opd)2 plus Cu metal byproductCopper o-phenylenediamine complex control, not a conductive MOF. · o-phenylenediamine (opd). | 0D · Model SystemMolecular control reaction used to demonstrate Cu metal signatures in PXRD/XPS. | SI p.S4 · Discussion of Cu mixed-valency in Cu3(HITP)2 · Figs. S3-S4 |
| Ni3(HITP)2Browse family: Ni₃(HITP)₂ / Ni–HITP | Ni3(HITP)2Nickel sites in the isostructural M3(HITP)2 framework. · HITP = 2,3,6,7,10,11-hexaiminotriphenylene. | 2D · PristinePreviously reported isostructural 2D MOF comparator for Cu3(HITP)2. | main p.1, article p.4349 · Introduction |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu3(HITP)2 synthesised from Cu(I) precursorresearch_0002__mat__cu3_hitp2 | Powder · Target Sample · Pristine Framework | Alternate Cu(I)/Et3N/MeCN route in air at 23 deg C; poorer crystallinity than typical Cu(II) route. | SI p.S5 · Discussion of Cu mixed-valency in Cu3(HITP)2 · Figs. S5-S6 |
| Bulk Cu3(HITP)2 black crystalline solidresearch_0002__mat__cu3_hitp2 | Powder · Target Sample · Pristine Framework | Ambient aqueous precipitation, washed with water and acetone, dried under vacuum. | main p.1, article p.4349 · Results · Fig. 1 |
| Cu3(HITP)2 chemiresistive device on interdigitated gold electrodesresearch_0002__mat__cu3_hitp2 | Electrode · Target Sample · Pristine Framework | Fresh Cu3(HITP)2 acetone suspension drop-cast until device resistance reached 10-100 kOhm.Interdigitated gold electrodes, CC1.W1 from BVT Technologies. | SI p.S3 · Procedure for Gas Detection Measurements · Fig. S8 |
| Cu3(HITP)2 film drop-cast on ITO-coated glassresearch_0002__mat__cu3_hitp2 | Thin Film · Target Sample · Pristine Framework | Suspension of Cu3(HITP)2 in acetone drop-cast onto ITO glass.Indium-tin-oxide (ITO)-coated glass. | main p.2, article p.4350 · Results · Fig. 3 |
| Pressed pellet of bulk Cu3(HITP)2research_0002__mat__cu3_hitp2 | Pellet · Target Sample · Pristine Framework | Pressed pellet measured by two-point probe at room temperature.Pressed between two steel rods inside a glass capillary. · Powder pellet thickness typically 0.1-0.5 mm. | SI p.S2 · Instrumentation |
| Crude Cu(opd)2 anaerobic control productresearch_0002__mat__cu_opd2_control_complex | Powder · Model System · Model | Anaerobic Cu(OAc)2/opd control reaction product. | SI p.S4 · Discussion of Cu mixed-valency in Cu3(HITP)2 · Figs. S3-S4 |
| Ni3(HITP)2 chemiresistive sensing control deviceresearch_0002__mat__ni3_hitp2_control | Electrode · Pristine Control · Pristine Framework | Devices fabricated from Ni3(HITP)2 and tested under identical ammonia exposure conditions.Interdigitated electrodes; detailed substrate not specified for Ni control. | main p.3, article p.4351 · Sensing discussion |