Solid State NMR and X‐ray Studies on Amylose Complexes with Small Organic Molecules
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Bibliographic record
Abstract
Abstract Crystalline complexes of amylose with lauric acid, n ‐butanol, n ‐pentanol, dimethyl sulfoxide and thymol were examined by 13 C CP/MAS NMR and X‐ray diffraction methods. The complexes displayed the single helix V‐amylose structure and were heat stable at least up to 90 °C. In addition, the X‐ray diffraction pattern of the amylose‐ n ‐butanol complex was similar to that of the amylose‐ n ‐pentanol complex which is interpreted to mean that the guest agents are not present in crystallographic register. It is suggested that the guests are in a matrix, of crystal surfaces, dislocations and chain folds, such that only the amylose chains contribute to the observed crystalline diffraction patterns. After humidification, the NMR spectra showed partial transformation to the double helix B‐polymorph for all complexes except that formed with lauric acid. The transformation is dependent on the alkyl chain length of guest agents. Once the double helix polymorph was formed, it was permanent unless the sample was redissolved.
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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