Optical Resolution Membranes from Polysulfones Bearing Alanine Derivatives as Chiral Selectors
Bibliographic record
Abstract
Abstract Polysulfones bearing a derivative of alanyl residue employed as chiral selectors were prepared by polymer modification. The specific rotation ([ α ] D ) of the polysulfone with a derivative of D ‐alanyl residue (PSf‐Ac‐ D ‐Ala) was determined to be 2.87 deg · cm 2 · g −1 (c = 1.00 g · dL −1 in DMF) and that with L ‐alanyl residue (PSf‐Ac‐ L ‐Ala) to be ‐2.36 deg · cm 2 · g −1 (c = 1.00 g · dL −1 in DMF). The membrane from PSf‐Ac‐ D ‐Ala preferentially adsorbed the D ‐isomer of Glu from racemic mixture of Glu and vice versa. Chiral separation ability was studied by applying a potential difference as a driving force for membrane transport. The permselectivity of PSf‐Ac‐ D ‐Ala toward D ‐Glu ( α D/L ) was determined to be 1.40, and that of PSf‐Ac‐ L ‐Ala toward the L ‐isomer ( α L/D ) to be 1.48 at 18.0 V, reflecting their adsorption selectivity. magnified image
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How this classification was reachedexpand
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) | 0.001 | 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 teacher head, 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".