Light Scattering Study of Rigid, Rodlike Organometallic Block Copolymer Micelles in Dilute Solution
Bibliographic record
Abstract
The block copolymer poly(ferrocenyldimethylsilane- b -dimethylsiloxane) (PFS 40 - b -PDMS 480, where the subscripts refer to the mean degree of polymerization) self-assembles in n -decane at 25 °C to form long rodlike micelles (Raez et al. J. Am. Chem. Soc . 2002, 124, 10381). Here, we describe a combination of static (SLS) and dynamic (DLS) light scattering measurements on solutions of the micelles in n -decane. By SLS, we find that the micelles are thin, rigid, rodlike structures with a mean length of ∼960 nm in the limit of zero concentration and a length that increases with concentration. Through a combination of SLS and DLS measurements, we find that that the cross-sectional hydrodynamic diameter of the micelle is 18 nm. These self-assembled structures also appear to have a narrow distribution of lengths (with M w / M n ≈ 1.1). These structures are much smaller than those observed on transmission electron microscopy (TEM) grids obtained from solutions of these self-assembled structures.
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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) | 0.000 | 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) | 0.001 | 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 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".