Syntheses and micellar properties of well‐defined amphiphilic AB<sub>2</sub>and A<sub>2</sub>B Y‐shaped miktoarm star copolymers of ε‐caprolactone and 2‐(dimethylamino)ethyl methacrylate
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Well‐defined amphiphilic PCL‐ b ‐(PDMA) 2 and (PCL) 2 ‐ b ‐PDMA Y‐shaped miktoarm star copolymers and PCL‐ b ‐PDMA linear diblock copolymer were synthesized via a combination of ring‐opening polymerization (ROP) and atom transfer radical polymerization (ATRP), where PCL is poly (ε‐caprolactone) and PDMA is poly(2‐(dimethylamino)ethyl methacrylate). All of these three types of copolymers have comparable PCL contents and overall molecular weights. The PCL block is hydrophobic while the PDMA block is hydrophilic, and they behave like polymeric surfactants and self‐assemble into PCL‐core micelles in aqueous media. The chain architectural effects on the micellization properties, including the aggregation number, size, polydispersity, and micelle densities of (PCL 29 ) 2 ‐ b ‐PDMA 45 , PCL 61 ‐ b ‐(PDMA 24 ) 2 , and PCL 56 ‐ b ‐PDMA 49 in dilute aqueous solution, were then explored by dynamic and static laser light scattering (LLS). The intensity–average hydrodynamic radius, 〈 R h 〉, the aggregation number per micelle, N agg , and the core radius, R core , of the PCL‐core micelles all increased in the order PCL 61 ‐ b ‐(PDMA 24 ) 2 < (PCL 29 ) 2 ‐ b ‐PDMA 45 < PCL 56 ‐ b ‐PDMA 49 . The surface area occupied per soluble PDMA block at the core/corona interface increased in the order PCL 61 ‐ b ‐(PDMA 24 ) 2 < PCL 56 ‐ b ‐PDMA 49 < (PCL 29 ) 2 ‐ b ‐PDMA 45 . PCL 61 ‐ b ‐(PDMA 24 ) 2 micelles had the largest overall micelle density, possibly because of that the presence of two soluble PDMA arms at the junction point favors the bending of the core–corona interface and thus the formation of densely‐packed core‐shell nanostructures. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 1446–1462, 2007
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.003 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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