Who Lives in a Tin Can Under the (Ultrasonic) Sea: Sponges Made From Perfluoropyridine‐Derived Thiol‐Ene Polymerizations
Bibliographic record
Abstract
ABSTRACT Substitution of perfluoropyridine (PFP) in the 4‐position through an S N Ar reaction is facile through mechanochemical methods, with yields in excess of 99% and short reaction times on a multigram scale. Glycol materials can be end‐capped with PFP to create bis‐PFP ethers, which are capable of further activation in the 2‐ and 6‐positions by sonochemical means. A bis‐PFP ether was substituted sonochemically with eugenol in the 2‐ and 6‐positions to produce a prepolymer utilizing a bio‐based feedstock as a polymerizable motif; however, it was ultimately found to perform identically to a traditional thermal reaction. The resulting material was polymerized with a commercially available dithiol to yield crosslinked, insoluble, sponge‐like elastomers. The sponges display similar thermal stability ( T onset = 311°C–355°C), but highly variant glass transition temperatures ( T g = −35°C to 8°C), indicating that this is a viable methodology to create elastomers with tunable T g 's dependent on the nature of the central linker in the 4‐position.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".