Photoiniferter RAFT Polymerization of Optically Active Hydrophilic Vitamin B5 Analogous Methacrylamide
Bibliographic record
Abstract
Chiroptical polymers are interesting due to diverse applications in the field of chromatography, biomedicines, and catalysis. This study describes the synthesis of new types of optically active polymers of vitamin B5 analogous methacrylamide (B5AMA) using a photoiniferter polymerization approach at ambient temperatures. Enantiomers of B5AMA monomer (( R ) and ( S )) were prepared by the ring opening method and were characterized for their optical activity. The monomers were then polymerized by a photoiniferter polymerization approach using two different thiocarbonylthio (TCT) compounds as iniferters. Both TCTs showed controlled polymerization of B5AMA enantiomers and yielded polymers of opposite optical rotation. The enantiomeric polymers of B5AMA exhibited a complementary mirror-image Cotton effect to each other in the circular dichroism (CD) spectra, and 13 C NMR analysis revealed the formation of syndiotactic polymer structures. To the best of our knowledge, this is the first study that depicts the successful synthesis of optically active macromolecules by a photoiniferter polymerization approach.
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How this classification was reachedexpand
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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 teacher head, 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".