Designing Miktoarm Polymers Using a Combination of “Click” Reactions in Sequence with Ring-Opening Polymerization
Bibliographic record
Abstract
The design and synthesis of a well-defined molecular building block with three orthogonal functionalities which facilitate the construction of ABC-type miktoarm star polymers via a combination of sequential Cu I -catalyzed cycloaddition of an azide to an alkyne (“click”) followed by ring-opening polymerization are reported. Using this simple and highly versatile methodology, a variety of miktoarm star polymers were prepared which consisted of hydrophilic poly(ethylene glycol) and hydrophobic polystyrene and poly(ε-caprolactone) arms. Their self-assembly in an aqueous medium was examined using dynamic light scattering and transmission electron microscopy. These ABC miktoarm polymers were found to self-assemble into spherical micelles whose core size and hydrodynamic diameter were found to be inversely proportional to the size of the PEG arm. The potential of encapsulating small molecules into these micelles was explored using Disperse Red 1 dye. An enhancement in the loading capacity of the micelles was observed with an increase in the length of the hydrophobic arm.
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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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".