Verdazyl‐Mediated Polymerization of Styrene
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Attempted controlled polymerizations of styrene, conducted in the presence of either 1,3,5‐triphenyl‐6‐oxoverdazyl or 1,5‐dimethyl‐3‐phenyl‐6‐oxoverdazyl radicals initiated with benzoyl peroxide or 1,1′‐azobis(cyclohexanecarbonitrile) were universally unsuccessful regardless of the reaction temperature and the initiator/verdazyl molar ratio. No improvement was observed using a verdazyl‐terminated styrene initiator adduct prepared by an exchange reaction between a styrene‐TEMPO alkoxyamine and a 1,3,5‐triphenyl‐6‐oxoverdazyl radical. However, controlled polymerizations of styrene were achieved at 125 °C using a styrene‐verdazyl adduct containing the 1,5‐dimethyl‐3‐phenyl‐6‐oxoverdazyl radical. Polydispersity indexes remained low throughout the polymerizations and plots of number average molecular weight ( $\overline M _{\rm n}$ ) versus time were linear. However, the actual $\overline M _{\rm n}$ values were considerably lower than theoretical, an unexpected result that is under investigation.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 it