Strain-Promoted Azide-Alkyne Cycloaddition-Mediated Step-Growth Polymerization
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Bibliographic record
Abstract
The development of new polymerization techniques enables the preparation of new polymers with unique functionalities, structures, and architectures. Here, we report a bifunctional monomer based on the strained dibenzoazacyclooctyne (DBCO) structure that efficiently polymerizes with several bifunctional azide comonomers. The reactions proceed to full conversion in under 5 min and routinely results in polymers with molecular weights above 50 kDa, as determined by size-exclusion chromatography and 1H NMR. The polymers were found to retain reactive chain ends, enabling control of molecular weight via monomer addition or titration of monomer stoichiometry. The DBCO-based monomer was further investigated in the synthesis of cross-linked polymers using a trifunctional azide cross-linker, which formed gels at concentrations in excess of 50 mM, as suppression of intramolecular cyclization was necessary. This strategy allows for the rapid and efficient preparation of polymers and cross-linked gels without heat, light, catalysts, initiators, or any by-products.
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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) | 0.009 | 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 it