A Novel and Versatile Methodology for Functionalization of Conjugated Polymers. Transformation of Poly(3-bromo-4-hexylthiophene) via Palladium-Catalyzed Coupling Chemistry
Bibliographic record
Abstract
[Extract] Poly(thiophene)s have been an interdisciplinary subject of study over the past two decades 1-5 largely because of their novelty, characteristic electrical and pptical properties, and potential application in electronic devices such as organic field-effect transistors (FETs), 2 chemosensors, 3 electrochemical capacitors, 4 and light-emitting displays (LEDs). 5 Their processability, molecular organization, and electronic and optical properties can be controlled through derivatization of the thienylring. However, the scientific demand for poly(thiophene)s that possess more complex structural motifs is offset by synthetic limitations. For example, preparation of poly-(thiophene)s with functional side chains requires tedious procedures involving the synthesis of monomers. All but a few functional groups are intolerant of the harsh polymerization conditions, with the result that many potential functional poly(thiophene)s simply cannot be prepared.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".