The Nanostructure of HMT-PMBI, a Sterically Hindered Ionene
Bibliographic record
Abstract
We have studied the nanoscale structure of a novel benzimidazolium-based ionene, methylated poly(hexamethyl-p-terphenyl benzimidazolium) (HMT-PMBI), using a combination of X-ray scattering experiments and molecular dynamics simulations to explore samples with different levels of hydration and containing different anions. HMT-PMBI shows a remarkably simple morphology. At low levels of hydration, the bulky polymer backbones are unable to pack efficiently, leaving approximately 10% of the sample volume free of polymers, anions, or water. As the hydration levels are increased, water fills the free volume, forming a percolating network. This network forms at hydration levels as low as λ = 4 in samples containing less hydrophilic anions, such as bromide or iodide. At higher degrees of hydration, water simply forces the polymer backbones apart.
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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".