Trang B., Yeung M., Popple D.C. et al. · Journal of the American Chemical Society · 2018 · 13892-13903
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.
Although the paper motivates optoelectronic applications and describes the material as semiconducting/luminescent, it does not report electrical conductivity, charge-transport, thermoelectric, porosity, or electrochemical device measurements for [AgSePh]inf.
Caveat: This is an extraction-level absence claim after reading the main article and SI; it is not a scientific measurement.
13899 · Materials and Methods
On very thin Ag/Si(100), water-saturated conditions can cause competing silicon etching that consumes/inactivates water and interferes with tarnishing; glass, quartz, mica, or thermally oxidised silicon avoid this interference.
Caveat: The mechanism of pure-water Ag-assisted silicon etching at 80 deg C is inferred from EDS/SEM and is described as unexpected.
13895 · Water's Role in Silver Tarnishing by Diphenyl Diselenide · Figures S5-S6 · Linked to 2 structured results
Tarnishing Ag with DPSe forms crystalline [AgSePh]inf/mithrene thin films, with GIWAXS matching bulk/reference [AgSePh]inf and PL/absorption features consistent with prior reports.
Caveat: Some structural confirmation is against a prior single-crystal reference rather than a CIF supplied in this extraction set.
13894 · Results and Discussion · Figure 3f · Linked to 3 structured results
Tarnished [AgSePh]inf films are preferentially face-on/coplanar to the substrate, with basal-plane reflections enhanced relative to high-q powder-like features.
Caveat: Mature films show some plastic deformation and nonplanar/out-of-plane crystallites as they thicken.
13896 · Progression of the Tarnishing Reaction · Figure 5; Figure 6 · Linked to 3 structured results
Ag2O reacts with PhSeH by an acid-base pathway to give the same [AgSePh]inf coordination polymer product as the Ag/DPSe tarnishing route.
Caveat: Initial product can contain residual silver oxide; purification is needed for a clean yellow MOCHA suspension.
13897 · Substitution of Silver(0) with Silver(I) Oxide · Equation 5 · Linked to 1 structured result
The main tarnishing route is proposed as an oxidation-reduction reaction in which silver metal is oxidised, DPSe is reduced, and [AgSePh]inf precipitates/grows.
Caveat: The equations are explicitly described as assumed/proposed; detailed atomistic intermediates remain speculative.
13897 · The Tarnishing Redox Reaction · Equations 1-4 · Linked to 4 structured results
Water/humidity is critical to DPSe tarnishing of silver into [AgSePh]inf; drying the vessel inactivates the reaction, while water-saturation increases product optical density.
Caveat: Humidity/product quantity is supported by optical density and qualitative sample comparison rather than a reported kinetic rate constant.
13894 · Water's Role in Silver Tarnishing by Diphenyl Diselenide · Figure 4 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Mithrene; silver benzeneselenolate | [AgSePh]infAg coordination centres / silver-selenolate inorganic layer · Benzeneselenolate (PhSe-) | 2D · PristineCrystalline layered metal-organic chalcogenolate assembly containing an organic supramolecular phase and a two-dimensional inorganic coordination polymer phase; GIWAXS of films matches bulk/reference structure with strong basal-plane reflections. | 13892 · Abstract |
| Silver metal precursor films | AgAg(0) metal | unknown · UnknownThermally evaporated silver films used as metal precursor, substrate, and untarnished control. | 13898 · Materials and Methods |
| Silver(I) oxide reagent/control | Ag2OAg(I) | unknown · UnknownSilver(I) oxide reagent used to test oxidation-state effects and acid-base conversion to [AgSePh]inf. | 13897 · Substitution of Silver(0) with Silver(I) Oxide · Table 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Silver(I) oxide plus DPSe no-reaction controlresearch_0737__mat__mat_silver_oxide | Powder · Pristine Control · Unknown | Ag2O exposed to DPSe; no [AgSePh]inf product observed | S-2 · Figure S1 caption · Figure S1c,d |
| Silver metal plus benzeneselenol delamination/side-product controlresearch_0737__mat__mat_silver_metal | Thin Film · Pristine Control · Unknown | Treating silver metal with PhSeH under oxygen-free or oxygen-containing conditionsSilver wafer/film on silicon substrate | 13897 · Substitution of DPSe with PhSeH · Table 1 |
| [AgSePh]inf film from 100 nm Ag on silicon under humidity variantsresearch_0737__mat__mat_agseph_mithrene | Thin Film · Target Sample · Pristine Framework | Tarnished in dry, room-air, or water-saturated vessel at 80 deg C for 72 hSilicon wafer with 100 nm thermally evaporated Ag · 100 nm Ag precursor; product thickness not directly reported | 13894 · Water's Role in Silver Tarnishing by Diphenyl Diselenide · Figure 4 |
| [AgSePh]inf progression films from 200 nm Agresearch_0737__mat__mat_agseph_mithrene | Thin Film · Target Sample · Pristine Framework | Tarnished at 80 deg C and examined after 1, 3, 4, 7, and/or 8 daysThermally evaporated 200 nm silver film · 200 nm Ag precursor; mature cross-section approximately 255 nm after 8 days | 13895 · Progression of the Tarnishing Reaction · Figure 5 |
| [AgSePh]inf from silver(I) oxide plus benzeneselenolresearch_0737__mat__mat_agseph_mithrene | Powder · Target Sample · Pristine Framework | Acid-base reaction of Ag2O with neat PhSeH at 80 deg C, followed by ethanol/isopropanol purification | 13897 · Substitution of Silver(0) with Silver(I) Oxide · Equation 5; Table 1 |
| Bulk reference [AgSePh]inf powder/crystalsresearch_0737__mat__mat_agseph_mithrene | Powder · Pristine Control · Pristine Framework | Gram-scale solution synthesis from AgNO3, PPh3, DPSe, THF, and diethyl ether; isolated canary-yellow powder | 13899 · Materials and Methods |
| [AgSePh]inf thin films on glass coverslipsresearch_0737__mat__mat_agseph_mithrene | Thin Film · Target Sample · Pristine Framework | Gas-phase tarnishing for 3 days; silver is limiting reagent for optical measurementsGlass coverslips with 1, 2, 3, 5, or 10 nm deposited Ag precursor · 1-10 nm Ag precursor; estimated [AgSePh]inf layers 4, 8, 12, 20, and 39 layers | 13896 · Thin Films on Glass Substrates for Optical Characterization · Figure 7 |
| Solution-grown [AgSePh]inf crystallitesresearch_0737__mat__mat_agseph_mithrene | Single Crystal · Pristine Control · Pristine Framework | Solution-grown crystallites used for SEM/PL morphology and optical comparisonPrepared by previously reported solution-phase/biphasic liquid-liquid method | 13893 · Results and Discussion · Figure 3a,b |
| Tarnished [AgSePh]inf thin film on silverresearch_0737__mat__mat_agseph_mithrene | Thin Film · Target Sample · Pristine Framework | Solvent-free gas-phase DPSe tarnishing of silver at 80 deg C for 24-192 h in sealed glass jar, stored dark after reactionThermally evaporated silver film on substrates including silicon, glass, quartz, or mica; Ti adhesion layer often used before Ag · Product film thicknesses ranging from 5 to 100 nm reported in abstract; specific experiments also used 100 nm or 200 nm Ag precursor films. | 13892 · Abstract |
| Low-yield [AgSePh]inf from silver films immersed in DPSe/tolueneresearch_0737__mat__mat_agseph_mithrene | Thin Film · Target Sample · Composite | Silver films immersed in DPSe in toluene for three days; low yield [AgSePh]inf plus fibrous byproduct100 nm or 5 nm Ag film on silicon wafer · 100 nm Ag or 5 nm Ag precursor in SI examples | S-3 · Figure S2 caption · Figure S2 |
| Thin Ag on Si(100) etch/no-reaction controlresearch_0737__mat__mat_silver_metal | Thin Film · Pristine Control · Unknown | Attempted humidity-rich tarnishing; competing Ag/water/silicon etching observedSi(100) with discontinuous 1-10 nm Ag, including 10 nm Ag in SI EDS · 1-10 nm Ag on Si(100); 10 nm Ag in Figure S6 | S-5 · Figure S5 caption · Figure S5 |
| Untarnished silver control filmsresearch_0737__mat__mat_silver_metal | Thin Film · Pristine Control · Unknown | Thermally evaporated Ag before DPSe conversion, or heated control without DPSeSilicon or glass substrates depending on experiment · 1-10 nm, 100 nm, or 200 nm Ag precursor depending on experiment | 13896 · Thin Films on Glass Substrates for Optical Characterization · Figure 7b,c |