Characterization of the Association Level of Pyrene-Labeled HASEs by Fluorescence
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Bibliographic record
Abstract
The hydrophobic associations of three hydrophobically modified alkali swellable emulsion polymers (HASE) were studied by fluorescence. The chromophore pyrene was used as the hydrophobic pendant. The level of association was characterized qualitatively and quantitatively by monitoring the fluorescence behavior of the pyrene monomer and excimer. Excimer formation occurs mostly by diffusion in an organic solvent (tetrahydrofuran, THF) where the pyrene moieties are not associated. In aqueous solutions where pyrene is insoluble, excimer formation occurs mostly via direct excitation of ground-state pyrene aggregates. The level of association of these pyrene-labeled HASEs was determined quantitatively by analyzing the monomer and excimer fluorescence decays using a blob model. It was found that 58% of the hydrophobic pendants were associated in aqueous solutions, but that only 5% of them were associated in THF.
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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) | 0.000 | 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