Molecular Dynamics Investigation on the Aggregation of Violanthrone78-Based Model Asphaltenes in Toluene
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Bibliographic record
Abstract
In order to investigate the aggregation mechanisms of asphaltenes in toluene, a series of molecular dynamics simulations were performed on Violanthrone78-based model asphaltenes with different aliphatic/aromatic ratios. Our simulation results show that the attraction between poly-aromatic cores is the main driving force for asphaltene aggregation in toluene, and that the extent of aggregation is independent of the aliphatic/aromatic ratios. On the other hand, analysis of the aggregated structures indicates that long side chains do hinder the formation of large direct parallel stacking structures. In contrast with water as a solvent, toluene exhibits attractive interactions with both the aliphatic and aromatic regions of the asphaltenes, hence reducing the size and stability of the asphaltene aggregates. Our findings help to elucidate, at a molecular level, the different solubility behaviors of asphaltenes in toluene and in water.
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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