Tabibi A., Jafari M.T. · Food Chemistry · 2022 · 131527
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 COF-coated SPME fibre enabled GC-CD-IMS determination of trifluralin and chlorpyrifos with sub-ug/L LODs and 87-110% real-sample recoveries.
Caveat: This is an analytical extraction application claim, not an electrical transport claim.
p001 · Abstract · Linked to 5 structured results
Coupling GC before IMS is used to resolve otherwise overlapped IMS signals for trifluralin and chlorpyrifos.
Caveat: Approximate retention times are visual estimates from Fig. 2b; the qualitative separation claim is explicit in the text.
p002 · Introduction · Fig. 2 · Linked to 2 structured results
The studied framework is a metal-free covalent organic framework and the paper reports no electrical-transport or thermoelectric measurements.
Caveat: The paper is still relevant as a porous framework/application article, but it does not provide conductive-MOF evidence.
p001 · Abstract
The PTA/TAPTT COF was assigned as a crystalline 2D eclipsed AA-stacked hexagonal framework by comparing experimental PXRD with simulated AA and AB models.
Caveat: The SI text layer includes captions but not numerical refinement tables or CIF files; assignment rests on the authors' PXRD/model comparison.
p003-p004 · 3.1. Characterization · Fig. S3; Fig. S4 · Linked to 5 structured results
The imide-linked COF is claimed to have high thermal stability, remaining stable before about 450 deg C.
Caveat: Thermal stability is from TGA under nitrogen; application stability under repeated SPME cycles is separately reported.
p004 · 3.1. Characterization · Fig. S8 · Linked to 2 structured results
The authors link the COF porosity and pore dimensions to its adsorption potential for trifluralin and chlorpyrifos extraction.
Caveat: The reported BET mean pore diameter and BJH diameter are not mutually consistent; both were retained as reported.
p004 · 3.1. Characterization · Fig. S6 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| PTA/TAPTT COF | C39H21N4O4 elemental-analysis composition reported by authorsnone; covalent organic framework · TAPTT precursor from cyanuric chloride and 4,4'-ethylenedianiline; 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA/PTA) | 2D · PristineCrystalline porous imide-linked COF assigned to eclipsed AA stacking with a hexagonal unit cell by PXRD comparison and Pawley refinement. | p002 · 2.3. Synthesis of PTA/TAPTT COF |
| PTA/TAPTT COF-coated stainless-steel SPME fibre | PTA/TAPTT COF coating on stainless steel wire with silicone glue bindernone in the COF; stainless steel support is not part of the framework · PTA/TAPTT COF; high-temperature silicone glue binder | unknown · CompositeComposite extraction fibre prepared by dipping a glue-coated stainless-steel wire into COF powder to form a thin coating. | p002 · 2.4. SPME fibre preparation · Fig. S2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| COF-coated SPME fibreresearch_0515__mat__pta_taptt_cof_spme_fibre | Thin Film · Composite Sample · Composite | Stainless steel wire washed ultrasonically with acetone, ethanol, and water; dipped in 10% w/w high-temperature silicone glue in toluene; dipped in COF powder; thermally treated at 250 deg C under nitrogen flow for 2 h.stainless steel wire, 1.5 cm length and 0.25 o.d. · thin coat; no thickness reported | p002 · 2.4. SPME fibre preparation · Fig. S2 |
| Synthesised PTA/TAPTT COF powderresearch_0515__mat__pta_taptt_cof | Powder · Target Sample · Pristine Framework | Red-brown sealed-tube product; solvent decanted, washed with dry THF, immersed in fresh THF for 12 h, and vacuum dried at 70 deg C for 24 h. | p002 · 2.3. Synthesis of PTA/TAPTT COF |