2H NMR spectroscopy of liquid crystals: Structure and orientational order of a chiral smectogen as a model compound of side-group LC polymers
Bibliographic record
Abstract
2H NMR spectroscopy is employed to investigate the orientational order, molecular structure and phase transitions of the chiral smectic liquid crystal (S)-[4-(2-methylbutyl)phenyl]-4′-octylbiphenyl carboxylate (8BEF5), partially deuterated in both the chiral chain and the phenyl moiety. 8BEF5 shows a rich polymorphism; the following phases have been observed: Blue phase, N*, SmA, SmC*, SmI*, SmF*, SmJ* and SmG* phases. The tilt angle and the orientational order of the phenyl fragment has been investigated throughout the mesophasic range; the additive potential method has been applied in the SmA phase in order to obtain the order parameter of the “average” conformer of the whole molecule. Molecular structure of (S)-[4-(2-methylbutyl)phenyl]-4′-n-octylbiphenyl carboxylate.
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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) | 0.000 | 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 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".